2ec8 - Revision history

OCA at 05:11, 17 October 2024

2024-10-17T05:11:10Z

← Older revision		Revision as of 05:11, 17 October 2024
Line 1:		Line 1:

	==Crystal structure of the exctracellular domain of the receptor tyrosine kinase, Kit==		==Crystal structure of the exctracellular domain of the receptor tyrosine kinase, Kit==
	<StructureSection load='2ec8' size='340' side='right'caption='[[2ec8]]' scene=''>		<StructureSection load='2ec8' size='340' side='right'caption='[[2ec8]], [[Resolution\|resolution]] 3.00Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EC8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2EC8 FirstGlance]. <br>		<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EC8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2EC8 FirstGlance]. <br>
	</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2ec8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ec8 OCA], [https://pdbe.org/2ec8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ec8 RCSB], [https://www.ebi.ac.uk/pdbsum/2ec8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ec8 ProSAT]</span></td></tr>		</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models\|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution\|Resolution]] 3Å</td></tr>
			<tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
			<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2ec8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ec8 OCA], [https://pdbe.org/2ec8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ec8 RCSB], [https://www.ebi.ac.uk/pdbsum/2ec8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ec8 ProSAT]</span></td></tr>
	</table>		</table>
	== Evolutionary Conservation ==		== Evolutionary Conservation ==
Line 11:		Line 13:
	<jmolCheckbox>		<jmolCheckbox>
	<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ec/2ec8_consurf.spt"</scriptWhenChecked>		<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ec/2ec8_consurf.spt"</scriptWhenChecked>
	<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/~~initialview01~~.spt</scriptWhenUnchecked>		<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
	<text>to colour the structure by Evolutionary Conservation</text>		<text>to colour the structure by Evolutionary Conservation</text>
	</jmolCheckbox>		</jmolCheckbox>
	</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary\|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2ec8 ConSurf].		</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary\|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2ec8 ConSurf].
	<div style="clear:both"></div>		<div style="clear:both"></div>
			<div style="background-color:#fffaf0;">
			== Publication Abstract from PubMed ==
			Stem Cell Factor (SCF) initiates its multiple cellular responses by binding to the ectodomain of KIT, resulting in tyrosine kinase activation. We describe the crystal structure of the entire ectodomain of KIT before and after SCF stimulation. The structures show that KIT dimerization is driven by SCF binding whose sole role is to bring two KIT molecules together. Receptor dimerization is followed by conformational changes that enable lateral interactions between membrane proximal Ig-like domains D4 and D5 of two KIT molecules. Experiments with cultured cells show that KIT activation is compromised by point mutations in amino acids critical for D4-D4 interaction. Moreover, a variety of oncogenic mutations are mapped to the D5-D5 interface. Since key hallmarks of KIT structures, ligand-induced receptor dimerization, and the critical residues in the D4-D4 interface, are conserved in other receptors, the mechanism of KIT stimulation unveiled in this report may apply for other receptor activation.

			Structural basis for activation of the receptor tyrosine kinase KIT by stem cell factor.,Yuzawa S, Opatowsky Y, Zhang Z, Mandiyan V, Lax I, Schlessinger J Cell. 2007 Jul 27;130(2):323-34. PMID:17662946<ref>PMID:17662946</ref>

			From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
			</div>
			<div class="pdbe-citations 2ec8" style="background-color:#fffaf0;"></div>

	==See Also==		==See Also==
	*[[Tyrosine kinase 3D structures\|Tyrosine kinase 3D structures]]		*[[Tyrosine kinase 3D structures\|Tyrosine kinase 3D structures]]
			== References ==
			<references/>
	__TOC__		__TOC__
	</StructureSection>		</StructureSection>

OCA at 10:36, 17 February 2021

2021-02-17T10:36:19Z

← Older revision		Revision as of 10:36, 17 February 2021
Line 1:		Line 1:

	==Crystal structure of the exctracellular domain of the receptor tyrosine kinase, Kit==		==Crystal structure of the exctracellular domain of the receptor tyrosine kinase, Kit==
	<StructureSection load='2ec8' size='340' side='right' caption='[[2ec8]]~~, [[Resolution\|resolution]] 3.00Å~~' scene=''>		<StructureSection load='2ec8' size='340' side='right'caption='[[2ec8]]' scene=''>
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>~~[[2ec8]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human].~~ Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EC8 OCA]. For a <b>guided tour on the structure components</b> use [~~http~~://~~oca~~.~~weizmann.ac.il/oca-docs~~/fgij/fg.htm?mol=2EC8 FirstGlance]. <br>		<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EC8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2EC8 FirstGlance]. <br>
	</td></tr>~~<tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>~~		</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2ec8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ec8 OCA], [https://pdbe.org/2ec8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ec8 RCSB], [https://www.ebi.ac.uk/pdbsum/2ec8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ec8 ProSAT]</span></td></tr>
	~~<tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[2e9w\|2e9w]], [[1exz\|1exz]]</td></tr>~~
	~~<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">KIT ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>~~
	<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Receptor_protein-tyrosine_kinase Receptor protein-tyrosine kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.10.1 2.7.10.1] </span></td></tr>
	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[~~http~~://~~oca~~.~~weizmann.ac.il/oca-docs~~/fgij/fg.htm?mol=2ec8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ec8 OCA], [~~http~~://pdbe.org/2ec8 PDBe], [~~http~~://www.rcsb.org/pdb/explore.do?structureId=2ec8 RCSB], [~~http~~://www.ebi.ac.uk/pdbsum/2ec8 PDBsum], [~~http~~://prosat.h-its.org/prosat/prosatexe?pdbcode=2ec8 ProSAT]</span></td></tr>
	</table>		</table>
	~~== Disease ==~~
	[[http://www.uniprot.org/uniprot/KIT_HUMAN KIT_HUMAN]] Defects in KIT are a cause of piebald trait (PBT) [MIM:[http://omim.org/entry/172800 172800]]; also known as piebaldism. PBT is an autosomal dominant genetic developmental abnormality of pigmentation characterized by congenital patches of white skin and hair that lack melanocytes.<ref>PMID:1376329</ref> <ref>PMID:1370874</ref> <ref>PMID:1717985</ref> <ref>PMID:7687267</ref> <ref>PMID:8680409</ref> <ref>PMID:9029028</ref> <ref>PMID:9450866</ref> <ref>PMID:9699740</ref> <ref>PMID:11074500</ref> Defects in KIT are a cause of gastrointestinal stromal tumor (GIST) [MIM:[http://omim.org/entry/606764 606764]].<ref>PMID:9029028</ref> <ref>PMID:9697690</ref> <ref>PMID:9438854</ref> <ref>PMID:11505412</ref> <ref>PMID:15824741</ref> Defects in KIT have been associated with testicular germ cell tumor (TGCT) [MIM:[http://omim.org/entry/273300 273300]]. A common solid malignancy in males. Germ cell tumors of the testis constitute 95% of all testicular neoplasms.<ref>PMID:9029028</ref> Defects in KIT are a cause of acute myelogenous leukemia (AML) [MIM:[http://omim.org/entry/601626 601626]]. AML is a malignant disease in which hematopoietic precursors are arrested in an early stage of development. Note=Somatic mutations that lead to constitutive activation of KIT are detected in AML patients. These mutations fall into two classes, the most common being in-frame internal tandem duplications of variable length in the juxtamembrane region that disrupt the normal regulation of the kinase activity. Likewise, point mutations in the kinase domain can result in a constitutively activated kinase.<ref>PMID:9029028</ref>
	~~== Function ==~~
	[[http://www.uniprot.org/uniprot/KIT_HUMAN KIT_HUMAN]] Tyrosine-protein kinase that acts as cell-surface receptor for the cytokine KITLG/SCF and plays an essential role in the regulation of cell survival and proliferation, hematopoiesis, stem cell maintenance, gametogenesis, mast cell development, migration and function, and in melanogenesis. In response to KITLG/SCF binding, KIT can activate several signaling pathways. Phosphorylates PIK3R1, PLCG1, SH2B2/APS and CBL. Activates the AKT1 signaling pathway by phosphorylation of PIK3R1, the regulatory subunit of phosphatidylinositol 3-kinase. Activated KIT also transmits signals via GRB2 and activation of RAS, RAF1 and the MAP kinases MAPK1/ERK2 and/or MAPK3/ERK1. Promotes activation of STAT family members STAT1, STAT3, STAT5A and STAT5B. Activation of PLCG1 leads to the production of the cellular signaling molecules diacylglycerol and inositol 1,4,5-trisphosphate. KIT signaling is modulated by protein phosphatases, and by rapid internalization and degradation of the receptor. Activated KIT promotes phosphorylation of the protein phosphatases PTPN6/SHP-1 and PTPRU, and of the transcription factors STAT1, STAT3, STAT5A and STAT5B. Promotes phosphorylation of PIK3R1, CBL, CRK (isoform Crk-II), LYN, MAPK1/ERK2 and/or MAPK3/ERK1, PLCG1, SRC and SHC1.<ref>PMID:7520444</ref> <ref>PMID:9528781</ref> <ref>PMID:10397721</ref> <ref>PMID:12444928</ref> <ref>PMID:12878163</ref> <ref>PMID:12511554</ref> <ref>PMID:17904548</ref> <ref>PMID:19265199</ref> <ref>PMID:21640708</ref> <ref>PMID:21135090</ref>
	== Evolutionary Conservation ==		== Evolutionary Conservation ==
	[[Image:Consurf_key_small.gif\|200px\|right]]		[[Image:Consurf_key_small.gif\|200px\|right]]
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	</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary\|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2ec8 ConSurf].		</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary\|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2ec8 ConSurf].
	<div style="clear:both"></div>		<div style="clear:both"></div>
	~~<div style="background-color:#fffaf0;">~~
	~~== Publication Abstract from PubMed ==~~
	Stem Cell Factor (SCF) initiates its multiple cellular responses by binding to the ectodomain of KIT, resulting in tyrosine kinase activation. We describe the crystal structure of the entire ectodomain of KIT before and after SCF stimulation. The structures show that KIT dimerization is driven by SCF binding whose sole role is to bring two KIT molecules together. Receptor dimerization is followed by conformational changes that enable lateral interactions between membrane proximal Ig-like domains D4 and D5 of two KIT molecules. Experiments with cultured cells show that KIT activation is compromised by point mutations in amino acids critical for D4-D4 interaction. Moreover, a variety of oncogenic mutations are mapped to the D5-D5 interface. Since key hallmarks of KIT structures, ligand-induced receptor dimerization, and the critical residues in the D4-D4 interface, are conserved in other receptors, the mechanism of KIT stimulation unveiled in this report may apply for other receptor activation.

	Structural basis for activation of the receptor tyrosine kinase KIT by stem cell factor.,Yuzawa S, Opatowsky Y, Zhang Z, Mandiyan V, Lax I, Schlessinger J Cell. 2007 Jul 27;130(2):323-34. PMID:17662946<ref>PMID:17662946</ref>

	~~From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>~~
	~~</div>~~
	~~<div class="pdbe-citations 2ec8" style="background-color:#fffaf0;"></div>~~

	==See Also==		==See Also==
	*[[Tyrosine kinase\|Tyrosine kinase]]		*[[Tyrosine kinase 3D structures\|Tyrosine kinase 3D structures]]
	~~== References ==~~
	~~<references/>~~
	__TOC__		__TOC__
	</StructureSection>		</StructureSection>
	[[Category: ~~Human]]~~		[[Category: Large Structures]]
	~~[[Category: Receptor protein-tyrosine kinase~~]]		[[Category: Lax I]]
	[[Category: Lax, I]]		[[Category: Mandiyan V]]
	[[Category: Mandiyan, V]]		[[Category: Opatowsky Y]]
	[[Category: Opatowsky, Y]]		[[Category: Schlessinger J]]
	[[Category: Schlessinger, J]]		[[Category: Yuzawa S]]
	[[Category: Yuzawa, S]]		[[Category: Zhang Z]]
	[[Category: Zhang, Z]]
	~~[[Category: Dimerization]]~~
	~~[[Category: Glycoprotein]]~~
	~~[[Category: Growth factor cytokine]]~~
	~~[[Category: Receptor tyrosine kinase]]~~
	~~[[Category: Transferase~~]]

OCA at 06:47, 6 June 2018

2018-06-06T06:47:38Z

← Older revision		Revision as of 06:47, 6 June 2018
Line 1:		Line 1:

	==Crystal structure of the exctracellular domain of the receptor tyrosine kinase, Kit==		==Crystal structure of the exctracellular domain of the receptor tyrosine kinase, Kit==
	<StructureSection load='2ec8' size='340' side='right' caption='[[2ec8]], [[Resolution\|resolution]] 3.00Å' scene=''>		<StructureSection load='2ec8' size='340' side='right' caption='[[2ec8]], [[Resolution\|resolution]] 3.00Å' scene=''>
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	<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">KIT ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>		<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">KIT ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
	<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Receptor_protein-tyrosine_kinase Receptor protein-tyrosine kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.10.1 2.7.10.1] </span></td></tr>		<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Receptor_protein-tyrosine_kinase Receptor protein-tyrosine kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.10.1 2.7.10.1] </span></td></tr>
	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ec8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ec8 OCA], [http://pdbe.org/2ec8 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2ec8 RCSB], [http://www.ebi.ac.uk/pdbsum/2ec8 PDBsum]</span></td></tr>		<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ec8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ec8 OCA], [http://pdbe.org/2ec8 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2ec8 RCSB], [http://www.ebi.ac.uk/pdbsum/2ec8 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2ec8 ProSAT]</span></td></tr>
	</table>		</table>
	== Disease ==		== Disease ==
Line 17:		Line 18:
	Check<jmol>		Check<jmol>
	<jmolCheckbox>		<jmolCheckbox>
	<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ec/2ec8_consurf.spt"</scriptWhenChecked>		<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ec/2ec8_consurf.spt"</scriptWhenChecked>
	<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>		<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
	<text>to colour the structure by Evolutionary Conservation</text>		<text>to colour the structure by Evolutionary Conservation</text>
	</jmolCheckbox>		</jmolCheckbox>
	</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary\|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/~~chain_selection~~.php?pdb_ID=~~2ata~~ ConSurf].		</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary\|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2ec8 ConSurf].
	<div style="clear:both"></div>		<div style="clear:both"></div>
	<div style="background-color:#fffaf0;">		<div style="background-color:#fffaf0;">

OCA at 16:45, 11 September 2015

2015-09-11T16:45:51Z

← Older revision		Revision as of 16:45, 11 September 2015
Line 2:		Line 2:
	<StructureSection load='2ec8' size='340' side='right' caption='[[2ec8]], [[Resolution\|resolution]] 3.00Å' scene=''>		<StructureSection load='2ec8' size='340' side='right' caption='[[2ec8]], [[Resolution\|resolution]] 3.00Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>[[2ec8]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/~~Homo_sapiens Homo sapiens~~]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EC8 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2EC8 FirstGlance]. <br>		<table><tr><td colspan='2'>[[2ec8]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EC8 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2EC8 FirstGlance]. <br>
	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>		</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
	<tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[2e9w\|2e9w]], [[1exz\|1exz]]</td></tr>		<tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[2e9w\|2e9w]], [[1exz\|1exz]]</td></tr>
	<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">KIT ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 ~~Homo sapiens~~])</td></tr>		<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">KIT ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
	<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Receptor_protein-tyrosine_kinase Receptor protein-tyrosine kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.10.1 2.7.10.1] </span></td></tr>		<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Receptor_protein-tyrosine_kinase Receptor protein-tyrosine kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.10.1 2.7.10.1] </span></td></tr>
	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ec8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ec8 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2ec8 RCSB], [http://www.ebi.ac.uk/pdbsum/2ec8 PDBsum]</span></td></tr>		<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ec8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ec8 OCA], [http://pdbe.org/2ec8 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2ec8 RCSB], [http://www.ebi.ac.uk/pdbsum/2ec8 PDBsum]</span></td></tr>
	</table>		</table>
	== Disease ==		== Disease ==
Line 31:		Line 31:
	From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>		From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
	</div>		</div>
			<div class="pdbe-citations 2ec8" style="background-color:#fffaf0;"></div>

	==See Also==		==See Also==
Line 38:		Line 39:
	__TOC__		__TOC__
	</StructureSection>		</StructureSection>
	[[Category: ~~Homo sapiens~~]]		[[Category: Human]]
	[[Category: Receptor protein-tyrosine kinase]]		[[Category: Receptor protein-tyrosine kinase]]
	[[Category: Lax, I]]		[[Category: Lax, I]]

OCA at 16:31, 15 January 2015

2015-01-15T16:31:41Z

← Older revision		Revision as of 16:31, 15 January 2015
Line 3:		Line 3:
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>[[2ec8]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EC8 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2EC8 FirstGlance]. <br>		<table><tr><td colspan='2'>[[2ec8]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EC8 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2EC8 FirstGlance]. <br>
	</td></tr><tr><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene><br>		</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
	<tr><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[2e9w\|2e9w]], [[1exz\|1exz]]</td></tr>		<tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[2e9w\|2e9w]], [[1exz\|1exz]]</td></tr>
	<tr><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">KIT ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr>		<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">KIT ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr>
	<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Receptor_protein-tyrosine_kinase Receptor protein-tyrosine kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.10.1 2.7.10.1] </span></td></tr>		<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Receptor_protein-tyrosine_kinase Receptor protein-tyrosine kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.10.1 2.7.10.1] </span></td></tr>
	<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ec8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ec8 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2ec8 RCSB], [http://www.ebi.ac.uk/pdbsum/2ec8 PDBsum]</span></td></tr>		<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ec8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ec8 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2ec8 RCSB], [http://www.ebi.ac.uk/pdbsum/2ec8 PDBsum]</span></td></tr>
	<table>		</table>
	== Disease ==		== Disease ==
	[[http://www.uniprot.org/uniprot/KIT_HUMAN KIT_HUMAN]] Defects in KIT are a cause of piebald trait (PBT) [MIM:[http://omim.org/entry/172800 172800]]; also known as piebaldism. PBT is an autosomal dominant genetic developmental abnormality of pigmentation characterized by congenital patches of white skin and hair that lack melanocytes.<ref>PMID:1376329</ref> <ref>PMID:1370874</ref> <ref>PMID:1717985</ref> <ref>PMID:7687267</ref> <ref>PMID:8680409</ref> <ref>PMID:9029028</ref> <ref>PMID:9450866</ref> <ref>PMID:9699740</ref> <ref>PMID:11074500</ref> Defects in KIT are a cause of gastrointestinal stromal tumor (GIST) [MIM:[http://omim.org/entry/606764 606764]].<ref>PMID:9029028</ref> <ref>PMID:9697690</ref> <ref>PMID:9438854</ref> <ref>PMID:11505412</ref> <ref>PMID:15824741</ref> Defects in KIT have been associated with testicular germ cell tumor (TGCT) [MIM:[http://omim.org/entry/273300 273300]]. A common solid malignancy in males. Germ cell tumors of the testis constitute 95% of all testicular neoplasms.<ref>PMID:9029028</ref> Defects in KIT are a cause of acute myelogenous leukemia (AML) [MIM:[http://omim.org/entry/601626 601626]]. AML is a malignant disease in which hematopoietic precursors are arrested in an early stage of development. Note=Somatic mutations that lead to constitutive activation of KIT are detected in AML patients. These mutations fall into two classes, the most common being in-frame internal tandem duplications of variable length in the juxtamembrane region that disrupt the normal regulation of the kinase activity. Likewise, point mutations in the kinase domain can result in a constitutively activated kinase.<ref>PMID:9029028</ref>		[[http://www.uniprot.org/uniprot/KIT_HUMAN KIT_HUMAN]] Defects in KIT are a cause of piebald trait (PBT) [MIM:[http://omim.org/entry/172800 172800]]; also known as piebaldism. PBT is an autosomal dominant genetic developmental abnormality of pigmentation characterized by congenital patches of white skin and hair that lack melanocytes.<ref>PMID:1376329</ref> <ref>PMID:1370874</ref> <ref>PMID:1717985</ref> <ref>PMID:7687267</ref> <ref>PMID:8680409</ref> <ref>PMID:9029028</ref> <ref>PMID:9450866</ref> <ref>PMID:9699740</ref> <ref>PMID:11074500</ref> Defects in KIT are a cause of gastrointestinal stromal tumor (GIST) [MIM:[http://omim.org/entry/606764 606764]].<ref>PMID:9029028</ref> <ref>PMID:9697690</ref> <ref>PMID:9438854</ref> <ref>PMID:11505412</ref> <ref>PMID:15824741</ref> Defects in KIT have been associated with testicular germ cell tumor (TGCT) [MIM:[http://omim.org/entry/273300 273300]]. A common solid malignancy in males. Germ cell tumors of the testis constitute 95% of all testicular neoplasms.<ref>PMID:9029028</ref> Defects in KIT are a cause of acute myelogenous leukemia (AML) [MIM:[http://omim.org/entry/601626 601626]]. AML is a malignant disease in which hematopoietic precursors are arrested in an early stage of development. Note=Somatic mutations that lead to constitutive activation of KIT are detected in AML patients. These mutations fall into two classes, the most common being in-frame internal tandem duplications of variable length in the juxtamembrane region that disrupt the normal regulation of the kinase activity. Likewise, point mutations in the kinase domain can result in a constitutively activated kinase.<ref>PMID:9029028</ref>
Line 40:		Line 40:
	[[Category: Homo sapiens]]		[[Category: Homo sapiens]]
	[[Category: Receptor protein-tyrosine kinase]]		[[Category: Receptor protein-tyrosine kinase]]
	[[Category: Lax, I.]]		[[Category: Lax, I]]
	[[Category: Mandiyan, V.]]		[[Category: Mandiyan, V]]
	[[Category: Opatowsky, Y.]]		[[Category: Opatowsky, Y]]
	[[Category: Schlessinger, J.]]		[[Category: Schlessinger, J]]
	[[Category: Yuzawa, S.]]		[[Category: Yuzawa, S]]
	[[Category: Zhang, Z.]]		[[Category: Zhang, Z]]
	[[Category: Dimerization]]		[[Category: Dimerization]]
	[[Category: Glycoprotein]]		[[Category: Glycoprotein]]

OCA at 00:05, 30 September 2014

2014-09-30T00:05:09Z

← Older revision		Revision as of 00:05, 30 September 2014
Line 1:		Line 1:
	~~{{STRUCTURE_2ec8~~\| ~~PDB~~=2ec8 \| ~~SCENE~~= }}		==Crystal structure of the exctracellular domain of the receptor tyrosine kinase, Kit==
	===~~Crystal structure~~ of the ~~exctracellular domain~~ of the receptor ~~tyrosine kinase~~, ~~Kit~~===		<StructureSection load='2ec8' size='340' side='right' caption='[[2ec8]], [[Resolution\|resolution]] 3.00Å' scene=''>
	~~{{ABSTRACT_PUBMED_17662946}}~~		== Structural highlights ==
			<table><tr><td colspan='2'>[[2ec8]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EC8 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2EC8 FirstGlance]. <br>
			</td></tr><tr><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene><br>
			<tr><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[2e9w\|2e9w]], [[1exz\|1exz]]</td></tr>
			<tr><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">KIT ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr>
			<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Receptor_protein-tyrosine_kinase Receptor protein-tyrosine kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.10.1 2.7.10.1] </span></td></tr>
			<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ec8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ec8 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2ec8 RCSB], [http://www.ebi.ac.uk/pdbsum/2ec8 PDBsum]</span></td></tr>
			<table>
			== Disease ==
			[[http://www.uniprot.org/uniprot/KIT_HUMAN KIT_HUMAN]] Defects in KIT are a cause of piebald trait (PBT) [MIM:[http://omim.org/entry/172800 172800]]; also known as piebaldism. PBT is an autosomal dominant genetic developmental abnormality of pigmentation characterized by congenital patches of white skin and hair that lack melanocytes.<ref>PMID:1376329</ref> <ref>PMID:1370874</ref> <ref>PMID:1717985</ref> <ref>PMID:7687267</ref> <ref>PMID:8680409</ref> <ref>PMID:9029028</ref> <ref>PMID:9450866</ref> <ref>PMID:9699740</ref> <ref>PMID:11074500</ref> Defects in KIT are a cause of gastrointestinal stromal tumor (GIST) [MIM:[http://omim.org/entry/606764 606764]].<ref>PMID:9029028</ref> <ref>PMID:9697690</ref> <ref>PMID:9438854</ref> <ref>PMID:11505412</ref> <ref>PMID:15824741</ref> Defects in KIT have been associated with testicular germ cell tumor (TGCT) [MIM:[http://omim.org/entry/273300 273300]]. A common solid malignancy in males. Germ cell tumors of the testis constitute 95% of all testicular neoplasms.<ref>PMID:9029028</ref> Defects in KIT are a cause of acute myelogenous leukemia (AML) [MIM:[http://omim.org/entry/601626 601626]]. AML is a malignant disease in which hematopoietic precursors are arrested in an early stage of development. Note=Somatic mutations that lead to constitutive activation of KIT are detected in AML patients. These mutations fall into two classes, the most common being in-frame internal tandem duplications of variable length in the juxtamembrane region that disrupt the normal regulation of the kinase activity. Likewise, point mutations in the kinase domain can result in a constitutively activated kinase.<ref>PMID:9029028</ref>
			== Function ==
			[[http://www.uniprot.org/uniprot/KIT_HUMAN KIT_HUMAN]] Tyrosine-protein kinase that acts as cell-surface receptor for the cytokine KITLG/SCF and plays an essential role in the regulation of cell survival and proliferation, hematopoiesis, stem cell maintenance, gametogenesis, mast cell development, migration and function, and in melanogenesis. In response to KITLG/SCF binding, KIT can activate several signaling pathways. Phosphorylates PIK3R1, PLCG1, SH2B2/APS and CBL. Activates the AKT1 signaling pathway by phosphorylation of PIK3R1, the regulatory subunit of phosphatidylinositol 3-kinase. Activated KIT also transmits signals via GRB2 and activation of RAS, RAF1 and the MAP kinases MAPK1/ERK2 and/or MAPK3/ERK1. Promotes activation of STAT family members STAT1, STAT3, STAT5A and STAT5B. Activation of PLCG1 leads to the production of the cellular signaling molecules diacylglycerol and inositol 1,4,5-trisphosphate. KIT signaling is modulated by protein phosphatases, and by rapid internalization and degradation of the receptor. Activated KIT promotes phosphorylation of the protein phosphatases PTPN6/SHP-1 and PTPRU, and of the transcription factors STAT1, STAT3, STAT5A and STAT5B. Promotes phosphorylation of PIK3R1, CBL, CRK (isoform Crk-II), LYN, MAPK1/ERK2 and/or MAPK3/ERK1, PLCG1, SRC and SHC1.<ref>PMID:7520444</ref> <ref>PMID:9528781</ref> <ref>PMID:10397721</ref> <ref>PMID:12444928</ref> <ref>PMID:12878163</ref> <ref>PMID:12511554</ref> <ref>PMID:17904548</ref> <ref>PMID:19265199</ref> <ref>PMID:21640708</ref> <ref>PMID:21135090</ref>
			== Evolutionary Conservation ==
			[[Image:Consurf_key_small.gif\|200px\|right]]
			Check<jmol>
			<jmolCheckbox>
			<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ec/2ec8_consurf.spt"</scriptWhenChecked>
			<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
			<text>to colour the structure by Evolutionary Conservation</text>
			</jmolCheckbox>
			</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary\|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
			<div style="clear:both"></div>
			<div style="background-color:#fffaf0;">
			== Publication Abstract from PubMed ==
			Stem Cell Factor (SCF) initiates its multiple cellular responses by binding to the ectodomain of KIT, resulting in tyrosine kinase activation. We describe the crystal structure of the entire ectodomain of KIT before and after SCF stimulation. The structures show that KIT dimerization is driven by SCF binding whose sole role is to bring two KIT molecules together. Receptor dimerization is followed by conformational changes that enable lateral interactions between membrane proximal Ig-like domains D4 and D5 of two KIT molecules. Experiments with cultured cells show that KIT activation is compromised by point mutations in amino acids critical for D4-D4 interaction. Moreover, a variety of oncogenic mutations are mapped to the D5-D5 interface. Since key hallmarks of KIT structures, ligand-induced receptor dimerization, and the critical residues in the D4-D4 interface, are conserved in other receptors, the mechanism of KIT stimulation unveiled in this report may apply for other receptor activation.

	~~==Disease==~~		Structural basis for activation of the receptor tyrosine kinase KIT by stem cell factor.,Yuzawa S, Opatowsky Y, Zhang Z, Mandiyan V, Lax I, Schlessinger J Cell. 2007 Jul 27;130(2):323-34. PMID:17662946<ref>PMID:17662946</ref>
	~~[[http://www.uniprot.org/uniprot/KIT_HUMAN KIT_HUMAN]] Defects in~~ KIT ~~are a cause of piebald trait (PBT) [MIM:[http://omim.org/entry/172800 172800]]; also known as piebaldism. PBT is an autosomal dominant genetic developmental abnormality of pigmentation characterized~~ by ~~congenital patches of white skin and hair that lack melanocytes~~.<ref>PMID:1376329</ref><ref>PMID:1370874</ref><ref>PMID:1717985</ref><ref>PMID:7687267</ref><ref>PMID:8680409</ref><ref>PMID:9029028</ref><ref>PMID:9450866</ref><ref>PMID:9699740</ref><ref>PMID:11074500</ref> Defects in KIT are a cause of gastrointestinal stromal tumor (GIST) [MIM:[http://omim.org/entry/606764 606764]].<ref>PMID:9029028</ref><ref>PMID:9697690</ref><ref>PMID:9438854</ref><ref>PMID:11505412</ref><ref>PMID:15824741</ref> Defects in KIT have been associated with testicular germ cell tumor (~~TGCT~~) ~~[MIM~~:~~[http://omim.org/entry/273300 273300]]. A common solid malignancy in males. Germ cell tumors of the testis constitute 95% of all testicular neoplasms~~.~~<ref>~~PMID:9029028</ref> Defects in KIT are a cause of acute myelogenous leukemia (AML) [MIM:[http://omim.org/entry/601626 601626]]. AML is a malignant disease in which hematopoietic precursors are arrested in an early stage of development. Note=Somatic mutations that lead to constitutive activation of KIT are detected in AML patients. These mutations fall into two classes, the most common being in-frame internal tandem duplications of variable length in the juxtamembrane region that disrupt the normal regulation of the kinase activity. Likewise, point mutations in the kinase domain can result in a constitutively activated kinase.<ref>PMID:~~9029028~~</ref>

	~~==Function==~~		From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
	~~[[http:~~//www.uniprot.org/uniprot/KIT_HUMAN KIT_HUMAN]] Tyrosine-protein kinase that acts as cell-surface receptor for the cytokine KITLG/SCF and plays an essential role in the regulation of cell survival and proliferation, hematopoiesis, stem cell maintenance, gametogenesis, mast cell development, migration and function, and in melanogenesis. In response to KITLG/SCF binding, KIT can activate several signaling pathways. Phosphorylates PIK3R1, PLCG1, SH2B2/APS and CBL. Activates the AKT1 signaling pathway by phosphorylation of PIK3R1, the regulatory subunit of phosphatidylinositol 3-kinase. Activated KIT also transmits signals via GRB2 and activation of RAS, RAF1 and the MAP kinases MAPK1/ERK2 and/or MAPK3/ERK1. Promotes activation of ~~STAT family members STAT1, STAT3, STAT5A and STAT5B. Activation of PLCG1 leads to~~ the ~~production of the cellular signaling molecules diacylglycerol and inositol 1,4,5-trisphosphate~~. ~~KIT signaling is modulated by protein phosphatases, and by rapid internalization and degradation of the receptor~~. ~~Activated KIT promotes phosphorylation~~ of the protein phosphatases PTPN6/SHP-1 and PTPRU, and of the transcription factors STAT1, STAT3, STAT5A and STAT5B. Promotes phosphorylation of PIK3R1, CBL, CRK (isoform Crk-II), LYN, MAPK1/ERK2 and/or MAPK3/ERK1, PLCG1, SRC and SHC1.<~~ref~~>~~PMID:7520444~~</~~ref~~><ref>PMID:9528781</ref><ref>PMID:10397721</ref><ref>PMID:12444928</ref><ref>PMID:12878163</ref><ref>PMID:12511554</ref><ref>PMID:17904548</ref><ref>PMID:19265199</ref><ref>PMID:21640708</ref><ref>PMID:21135090</ref>		</div>

	~~==About this Structure==~~
	[[2ec8]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EC8 OCA].

	==See Also==		==See Also==
	*[[~~Proto-oncogene tyrosine-protein~~ kinase\|~~Proto-oncogene tyrosine-protein~~ kinase]]		*[[Tyrosine kinase\|Tyrosine kinase]]
			== References ==
	==~~Reference~~==		<references/>
	~~<ref group="xtra">PMID:017662946</ref>~~<references ~~group="xtra"~~/><~~references~~/>		__TOC__
			</StructureSection>
	[[Category: Homo sapiens]]		[[Category: Homo sapiens]]
	[[Category: Receptor protein-tyrosine kinase]]		[[Category: Receptor protein-tyrosine kinase]]

OCA at 23:05, 24 March 2013

2013-03-24T23:05:47Z

← Older revision		Revision as of 23:05, 24 March 2013
Line 1:		Line 1:
	~~[[Image:2ec8.png\|left\|200px]]~~

	{{STRUCTURE_2ec8\| PDB=2ec8 \| SCENE= }}		{{STRUCTURE_2ec8\| PDB=2ec8 \| SCENE= }}
			===Crystal structure of the exctracellular domain of the receptor tyrosine kinase, Kit===
			{{ABSTRACT_PUBMED_17662946}}

	===~~Crystal structure~~ of the ~~exctracellular domain~~ of the ~~receptor tyrosine~~ kinase, ~~Kit===~~		==Disease==
			[[http://www.uniprot.org/uniprot/KIT_HUMAN KIT_HUMAN]] Defects in KIT are a cause of piebald trait (PBT) [MIM:[http://omim.org/entry/172800 172800]]; also known as piebaldism. PBT is an autosomal dominant genetic developmental abnormality of pigmentation characterized by congenital patches of white skin and hair that lack melanocytes.<ref>PMID:1376329</ref><ref>PMID:1370874</ref><ref>PMID:1717985</ref><ref>PMID:7687267</ref><ref>PMID:8680409</ref><ref>PMID:9029028</ref><ref>PMID:9450866</ref><ref>PMID:9699740</ref><ref>PMID:11074500</ref> Defects in KIT are a cause of gastrointestinal stromal tumor (GIST) [MIM:[http://omim.org/entry/606764 606764]].<ref>PMID:9029028</ref><ref>PMID:9697690</ref><ref>PMID:9438854</ref><ref>PMID:11505412</ref><ref>PMID:15824741</ref> Defects in KIT have been associated with testicular germ cell tumor (TGCT) [MIM:[http://omim.org/entry/273300 273300]]. A common solid malignancy in males. Germ cell tumors of the testis constitute 95% of all testicular neoplasms.<ref>PMID:9029028</ref> Defects in KIT are a cause of acute myelogenous leukemia (AML) [MIM:[http://omim.org/entry/601626 601626]]. AML is a malignant disease in which hematopoietic precursors are arrested in an early stage of development. Note=Somatic mutations that lead to constitutive activation of KIT are detected in AML patients. These mutations fall into two classes, the most common being in-frame internal tandem duplications of variable length in the juxtamembrane region that disrupt the normal regulation of the kinase activity. Likewise, point mutations in the kinase domain can result in a constitutively activated kinase.<ref>PMID:9029028</ref>

	~~{{ABSTRACT_PUBMED_17662946}}~~		==Function==
			[[http://www.uniprot.org/uniprot/KIT_HUMAN KIT_HUMAN]] Tyrosine-protein kinase that acts as cell-surface receptor for the cytokine KITLG/SCF and plays an essential role in the regulation of cell survival and proliferation, hematopoiesis, stem cell maintenance, gametogenesis, mast cell development, migration and function, and in melanogenesis. In response to KITLG/SCF binding, KIT can activate several signaling pathways. Phosphorylates PIK3R1, PLCG1, SH2B2/APS and CBL. Activates the AKT1 signaling pathway by phosphorylation of PIK3R1, the regulatory subunit of phosphatidylinositol 3-kinase. Activated KIT also transmits signals via GRB2 and activation of RAS, RAF1 and the MAP kinases MAPK1/ERK2 and/or MAPK3/ERK1. Promotes activation of STAT family members STAT1, STAT3, STAT5A and STAT5B. Activation of PLCG1 leads to the production of the cellular signaling molecules diacylglycerol and inositol 1,4,5-trisphosphate. KIT signaling is modulated by protein phosphatases, and by rapid internalization and degradation of the receptor. Activated KIT promotes phosphorylation of the protein phosphatases PTPN6/SHP-1 and PTPRU, and of the transcription factors STAT1, STAT3, STAT5A and STAT5B. Promotes phosphorylation of PIK3R1, CBL, CRK (isoform Crk-II), LYN, MAPK1/ERK2 and/or MAPK3/ERK1, PLCG1, SRC and SHC1.<ref>PMID:7520444</ref><ref>PMID:9528781</ref><ref>PMID:10397721</ref><ref>PMID:12444928</ref><ref>PMID:12878163</ref><ref>PMID:12511554</ref><ref>PMID:17904548</ref><ref>PMID:19265199</ref><ref>PMID:21640708</ref><ref>PMID:21135090</ref>

	==About this Structure==		==About this Structure==
Line 14:		Line 16:

	==Reference==		==Reference==
	<ref group="xtra">PMID:017662946</ref><references group="xtra"/>		<ref group="xtra">PMID:017662946</ref><references group="xtra"/><references/>
	[[Category: Homo sapiens]]		[[Category: Homo sapiens]]
	[[Category: Receptor protein-tyrosine kinase]]		[[Category: Receptor protein-tyrosine kinase]]

OCA at 20:24, 20 October 2012

2012-10-20T20:24:19Z

← Older revision		Revision as of 20:24, 20 October 2012
Line 8:		Line 8:

	==About this Structure==		==About this Structure==
	[[2ec8]] is a 1 chain structure ~~of [[Proto-oncogene tyrosine-protein kinase]]~~ with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EC8 OCA].		[[2ec8]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EC8 OCA].

	==See Also==		==See Also==

OCA: Protected "2ec8" [edit=sysop:move=sysop]

2012-07-27T10:22:45Z

Protected "2ec8" [edit=sysop:move=sysop]

← Older revision	Revision as of 10:22, 27 July 2012
(No difference)

OCA at 10:22, 27 July 2012

2012-07-27T10:22:43Z

← Older revision		Revision as of 10:22, 27 July 2012
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	~~{{Seed}}~~
	[[Image:2ec8.png\|left\|200px]]		[[Image:2ec8.png\|left\|200px]]

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	{{STRUCTURE_2ec8\| PDB=2ec8 \| SCENE= }}		{{STRUCTURE_2ec8\| PDB=2ec8 \| SCENE= }}

	===Crystal structure of the exctracellular domain of the receptor tyrosine kinase, Kit===		===Crystal structure of the exctracellular domain of the receptor tyrosine kinase, Kit===


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	{{ABSTRACT_PUBMED_17662946}}		{{ABSTRACT_PUBMED_17662946}}

	==~~Disease~~==		==About this Structure==
	~~Known disease associated with this structure: Gastrointestinal stromal tumor, somatic OMIM:~~[[~~http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=164920 164920~~]]~~, Germ cell tumors OMIM:~~[[~~http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=164920 164920~~]]~~, Leukemia, acute myeloid OMIM:[~~[http://~~www~~.~~ncbi~~.~~nlm.nih.gov~~/~~entrez~~/~~dispomim.cgi?id=164920 164920~~]~~], Mast cell leukemia OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim~~.~~cgi?id=164920 164920]], Mastocytosis with associated hematologic disorder OMIM:[~~[http://~~www~~.~~ncbi~~.~~nlm~~.~~nih.gov~~/~~entrez~~/~~dispomim.cgi~~?id=~~164920 164920]~~]~~, Piebaldism OMIM:[[http://www.ncbi.nlm.nih~~.~~gov/entrez/dispomim.cgi?id=164920 164920]]~~		[[2ec8]] is a 1 chain structure of [[Proto-oncogene tyrosine-protein kinase]] with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EC8 OCA].

	==~~About this Structure~~==		==See Also==
	~~2EC8 is a 1 chain structure of sequence from~~ [~~http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from~~ [~~http://oca.weizmann.ac.il/oca~~-~~bin/ocashort?id=2EC8 OCA~~].		*[[Proto-oncogene tyrosine-protein kinase\|Proto-oncogene tyrosine-protein kinase]]

	==Reference==		==Reference==
	<ref group="xtra">PMID:~~17662946~~</ref><references group="xtra"/>		<ref group="xtra">PMID:017662946</ref><references group="xtra"/>
	[[Category: Homo sapiens]]		[[Category: Homo sapiens]]
	[[Category: Receptor protein-tyrosine kinase]]		[[Category: Receptor protein-tyrosine kinase]]
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	[[Category: Receptor tyrosine kinase]]		[[Category: Receptor tyrosine kinase]]
	[[Category: Transferase]]		[[Category: Transferase]]

	~~''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Feb 18 04:06:19 2009''~~