2pkg - Revision history

OCA at 09:10, 21 February 2024

2024-02-21T09:10:20Z

← Older revision		Revision as of 09:10, 21 February 2024
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	<StructureSection load='2pkg' size='340' side='right'caption='[[2pkg]], [[Resolution\|resolution]] 3.30Å' scene=''>		<StructureSection load='2pkg' size='340' side='right'caption='[[2pkg]], [[Resolution\|resolution]] 3.30Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>[[2pkg]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/ ] and [https://en.wikipedia.org/wiki/~~Human Human~~]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PKG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2PKG FirstGlance]. <br>		<table><tr><td colspan='2'>[[2pkg]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Macaca_mulatta_polyomavirus_1 Macaca mulatta polyomavirus 1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PKG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2PKG FirstGlance]. <br>
	</td></tr><tr id='~~ligand~~'><td class="sblockLbl"><b>[[~~Ligand~~\|~~Ligands~~:]]</b></td><td class="sblockDat" id="~~ligandDat~~">~~<scene name='pdbligand=ZN:ZINC+ION'>ZN</scene>~~</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]] 3.3Å</td></tr>
	<tr id='~~gene~~'><td class="sblockLbl"><b>[[~~Gene~~\|~~Gene~~:]]</b></td><td class="sblockDat">~~PPP2R1A ([https~~:/~~/www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])~~</td></tr>		<tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</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=2pkg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2pkg OCA], [https://pdbe.org/2pkg PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2pkg RCSB], [https://www.ebi.ac.uk/pdbsum/2pkg PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2pkg ProSAT]</span></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=2pkg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2pkg OCA], [https://pdbe.org/2pkg PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2pkg RCSB], [https://www.ebi.ac.uk/pdbsum/2pkg PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2pkg ProSAT]</span></td></tr>
	</table>		</table>
	== Function ==		== Function ==
	[[https://www.uniprot.org/uniprot/2AAA_HUMAN 2AAA_HUMAN]] The PR65 subunit of protein phosphatase 2A serves as a scaffolding molecule to coordinate the assembly of the catalytic subunit and a variable regulatory B subunit. Required for proper chromosome segregation and for centromeric localization of SGOL1 in mitosis.<ref>PMID:16580887</ref> [[https://www.uniprot.org/uniprot/ST_SV40 ST_SV40]] Promotes efficient viral genome replication by accelerating both G1 and S phase progression of the cell cycle. Inhibits host PP2A by binding to the A subunit, thereby displacing lower affinity regulatory B subunit. Inactivation of PP2A in turn results in the transactivation of cyclin A and cyclin D1 promoters. Late during the infection cycle, ST may induce dephosphorylation of host eIF4E-binding protein EIF4EBP1 leading to the inhibition of cap-dependent translation. May establish and maintain high levels of viral genomes during persistent infection in cell culture.<ref>PMID:15680424</ref> <ref>PMID:15890927</ref> <ref>PMID:17936323</ref> <ref>PMID:8794333</ref> <ref>PMID:8917510</ref>		[https://www.uniprot.org/uniprot/2AAA_HUMAN 2AAA_HUMAN] The PR65 subunit of protein phosphatase 2A serves as a scaffolding molecule to coordinate the assembly of the catalytic subunit and a variable regulatory B subunit. Required for proper chromosome segregation and for centromeric localization of SGOL1 in mitosis.<ref>PMID:16580887</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=2pkg 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=2pkg ConSurf].
	<div style="clear:both"></div>		<div style="clear:both"></div>
	~~<div style="background-color:#fffaf0;">~~
	~~== Publication Abstract from PubMed ==~~
	The small t antigen (ST) of DNA tumor virus SV40 facilitates cellular transformation by disrupting the functions of protein phosphatase 2A (PP2A) through a poorly defined mechanism. The crystal structure of the core domain of SV40 ST bound to the scaffolding subunit of human PP2A reveals that the ST core domain has a novel zinc-binding fold and interacts with the conserved ridge of HEAT repeats 3-6, which overlaps with the binding site for the B' (also called PR61 or B56) regulatory subunit. ST has a lower binding affinity than B' for the PP2A core enzyme. Consequently, ST does not efficiently displace B' from PP2A holoenzymes in vitro. Notably, ST inhibits PP2A phosphatase activity through its N-terminal J domain. These findings suggest that ST may function mainly by inhibiting the phosphatase activity of the PP2A core enzyme, and to a lesser extent by modulating assembly of the PP2A holoenzymes.

	Structural and biochemical insights into the regulation of protein phosphatase 2A by small t antigen of SV40.,Chen Y, Xu Y, Bao Q, Xing Y, Li Z, Lin Z, Stock JB, Jeffrey PD, Shi Y Nat Struct Mol Biol. 2007 Jun;14(6):527-34. Epub 2007 May 27. PMID:17529992<ref>PMID:17529992</ref>

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

	==See Also==		==See Also==
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	__TOC__		__TOC__
	</StructureSection>		</StructureSection>
	[[Category: ~~Human~~]]		[[Category: Homo sapiens]]
	[[Category: Large Structures]]		[[Category: Large Structures]]
	[[Category: ~~Jeffrey, P D~~]]		[[Category: Macaca mulatta polyomavirus 1]]
	[[Category: ~~Shi, Y~~]]		[[Category: Jeffrey PD]]
	[[Category: ~~Hydrolase regulator-viral protein complex]]~~		[[Category: Shi Y]]
	~~[[Category: Protein phosphatase 2a]]~~
	~~[[Category: Regulation]]~~
	~~[[Category: Small t antigen]]~~
	~~[[Category: Sv40~~]]

OCA at 15:26, 17 June 2021

2021-06-17T15:26:06Z

← Older revision		Revision as of 15:26, 17 June 2021
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	==Structure of a complex between the A subunit of protein phosphatase 2A and the small t antigen of SV40==		==Structure of a complex between the A subunit of protein phosphatase 2A and the small t antigen of SV40==
	<StructureSection load='2pkg' size='340' side='right' caption='[[2pkg]], [[Resolution\|resolution]] 3.30Å' scene=''>		<StructureSection load='2pkg' size='340' side='right'caption='[[2pkg]], [[Resolution\|resolution]] 3.30Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>[[2pkg]] is a 4 chain structure with sequence from [~~http~~://en.wikipedia.org/wiki/ ] and [~~http~~://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PKG OCA]. For a <b>guided tour on the structure components</b> use [~~http~~://~~oca~~.~~weizmann.ac.il/oca-docs~~/fgij/fg.htm?mol=2PKG FirstGlance]. <br>		<table><tr><td colspan='2'>[[2pkg]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/ ] and [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PKG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2PKG FirstGlance]. <br>
	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>		</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
	<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">PPP2R1A ([~~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">PPP2R1A ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=2pkg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2pkg OCA], [~~http~~://pdbe.org/2pkg PDBe], [~~http~~://www.rcsb.org/pdb/explore.do?structureId=2pkg RCSB], [~~http~~://www.ebi.ac.uk/pdbsum/2pkg PDBsum], [~~http~~://prosat.h-its.org/prosat/prosatexe?pdbcode=2pkg ProSAT]</span></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=2pkg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2pkg OCA], [https://pdbe.org/2pkg PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2pkg RCSB], [https://www.ebi.ac.uk/pdbsum/2pkg PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2pkg ProSAT]</span></td></tr>
	</table>		</table>
	== Function ==		== Function ==
	[[~~http~~://www.uniprot.org/uniprot/2AAA_HUMAN 2AAA_HUMAN]] The PR65 subunit of protein phosphatase 2A serves as a scaffolding molecule to coordinate the assembly of the catalytic subunit and a variable regulatory B subunit. Required for proper chromosome segregation and for centromeric localization of SGOL1 in mitosis.<ref>PMID:16580887</ref> [[~~http~~://www.uniprot.org/uniprot/ST_SV40 ST_SV40]] Promotes efficient viral genome replication by accelerating both G1 and S phase progression of the cell cycle. Inhibits host PP2A by binding to the A subunit, thereby displacing lower affinity regulatory B subunit. Inactivation of PP2A in turn results in the transactivation of cyclin A and cyclin D1 promoters. Late during the infection cycle, ST may induce dephosphorylation of host eIF4E-binding protein EIF4EBP1 leading to the inhibition of cap-dependent translation. May establish and maintain high levels of viral genomes during persistent infection in cell culture.<ref>PMID:15680424</ref> <ref>PMID:15890927</ref> <ref>PMID:17936323</ref> <ref>PMID:8794333</ref> <ref>PMID:8917510</ref>		[[https://www.uniprot.org/uniprot/2AAA_HUMAN 2AAA_HUMAN]] The PR65 subunit of protein phosphatase 2A serves as a scaffolding molecule to coordinate the assembly of the catalytic subunit and a variable regulatory B subunit. Required for proper chromosome segregation and for centromeric localization of SGOL1 in mitosis.<ref>PMID:16580887</ref> [[https://www.uniprot.org/uniprot/ST_SV40 ST_SV40]] Promotes efficient viral genome replication by accelerating both G1 and S phase progression of the cell cycle. Inhibits host PP2A by binding to the A subunit, thereby displacing lower affinity regulatory B subunit. Inactivation of PP2A in turn results in the transactivation of cyclin A and cyclin D1 promoters. Late during the infection cycle, ST may induce dephosphorylation of host eIF4E-binding protein EIF4EBP1 leading to the inhibition of cap-dependent translation. May establish and maintain high levels of viral genomes during persistent infection in cell culture.<ref>PMID:15680424</ref> <ref>PMID:15890927</ref> <ref>PMID:17936323</ref> <ref>PMID:8794333</ref> <ref>PMID:8917510</ref>
	== Evolutionary Conservation ==		== Evolutionary Conservation ==
	[[Image:Consurf_key_small.gif\|200px\|right]]		[[Image:Consurf_key_small.gif\|200px\|right]]
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	==See Also==		==See Also==
	*[[~~Serine/threonine protein~~ phosphatase\|~~Serine/threonine protein~~ phosphatase]]		*[[Protein phosphatase 3D structures\|Protein phosphatase 3D structures]]
	== References ==		== References ==
	<references/>		<references/>
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	</StructureSection>		</StructureSection>
	[[Category: Human]]		[[Category: Human]]
			[[Category: Large Structures]]
	[[Category: Jeffrey, P D]]		[[Category: Jeffrey, P D]]
	[[Category: Shi, Y]]		[[Category: Shi, Y]]

OCA at 08:14, 29 August 2018

2018-08-29T08:14:46Z

← Older revision		Revision as of 08:14, 29 August 2018
Line 1:		Line 1:

	==Structure of a complex between the A subunit of protein phosphatase 2A and the small t antigen of SV40==		==Structure of a complex between the A subunit of protein phosphatase 2A and the small t antigen of SV40==
	<StructureSection load='2pkg' size='340' side='right' caption='[[2pkg]], [[Resolution\|resolution]] 3.30Å' scene=''>		<StructureSection load='2pkg' size='340' side='right' caption='[[2pkg]], [[Resolution\|resolution]] 3.30Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>[[2pkg]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/~~Human Human~~] and [http://en.wikipedia.org/wiki/~~Polyomavirus_maccacae Polyomavirus maccacae~~]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PKG OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2PKG FirstGlance]. <br>		<table><tr><td colspan='2'>[[2pkg]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/ ] and [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PKG OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2PKG FirstGlance]. <br>
	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>		</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
	<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">PPP2R1A ([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">PPP2R1A ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=2pkg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2pkg OCA], [http://pdbe.org/2pkg PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2pkg RCSB], [http://www.ebi.ac.uk/pdbsum/2pkg 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=2pkg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2pkg OCA], [http://pdbe.org/2pkg PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2pkg RCSB], [http://www.ebi.ac.uk/pdbsum/2pkg PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2pkg ProSAT]</span></td></tr>
	</table>		</table>
	== Function ==		== Function ==
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	Check<jmol>		Check<jmol>
	<jmolCheckbox>		<jmolCheckbox>
	<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/pk/2pkg_consurf.spt"</scriptWhenChecked>		<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/pk/2pkg_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>
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	</StructureSection>		</StructureSection>
	[[Category: Human]]		[[Category: Human]]
	~~[[Category: Polyomavirus maccacae]]~~
	[[Category: Jeffrey, P D]]		[[Category: Jeffrey, P D]]
	[[Category: Shi, Y]]		[[Category: Shi, Y]]

OCA at 07:03, 8 February 2016

2016-02-08T07:03:46Z

← Older revision		Revision as of 07:03, 8 February 2016
Line 17:		Line 17:
	<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=2pkg ConSurf].
	<div style="clear:both"></div>		<div style="clear:both"></div>
	<div style="background-color:#fffaf0;">		<div style="background-color:#fffaf0;">

OCA at 09:05, 10 September 2015

2015-09-10T09:05:22Z

← Older revision		Revision as of 09:05, 10 September 2015
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	<StructureSection load='2pkg' size='340' side='right' caption='[[2pkg]], [[Resolution\|resolution]] 3.30Å' scene=''>		<StructureSection load='2pkg' size='340' side='right' caption='[[2pkg]], [[Resolution\|resolution]] 3.30Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>[[2pkg]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/~~Homo_sapiens Homo sapiens~~] and [http://en.wikipedia.org/wiki/~~Simian_virus_40 Simian virus 40~~]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PKG OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2PKG FirstGlance]. <br>		<table><tr><td colspan='2'>[[2pkg]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human] and [http://en.wikipedia.org/wiki/Polyomavirus_maccacae Polyomavirus maccacae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PKG OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2PKG FirstGlance]. <br>
	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>		</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
	<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">PPP2R1A ([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">PPP2R1A ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=2pkg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2pkg OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2pkg RCSB], [http://www.ebi.ac.uk/pdbsum/2pkg 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=2pkg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2pkg OCA], [http://pdbe.org/2pkg PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2pkg RCSB], [http://www.ebi.ac.uk/pdbsum/2pkg PDBsum]</span></td></tr>
	</table>		</table>
	== Function ==		== Function ==
	[[http://www.uniprot.org/uniprot/2AAA_HUMAN 2AAA_HUMAN]] The PR65 subunit of protein phosphatase 2A serves as a scaffolding molecule to coordinate the assembly of the catalytic subunit and a variable regulatory B subunit. Required for proper chromosome segregation and for centromeric localization of SGOL1 in mitosis.<ref>PMID:16580887</ref>		[[http://www.uniprot.org/uniprot/2AAA_HUMAN 2AAA_HUMAN]] The PR65 subunit of protein phosphatase 2A serves as a scaffolding molecule to coordinate the assembly of the catalytic subunit and a variable regulatory B subunit. Required for proper chromosome segregation and for centromeric localization of SGOL1 in mitosis.<ref>PMID:16580887</ref> [[http://www.uniprot.org/uniprot/ST_SV40 ST_SV40]] Promotes efficient viral genome replication by accelerating both G1 and S phase progression of the cell cycle. Inhibits host PP2A by binding to the A subunit, thereby displacing lower affinity regulatory B subunit. Inactivation of PP2A in turn results in the transactivation of cyclin A and cyclin D1 promoters. Late during the infection cycle, ST may induce dephosphorylation of host eIF4E-binding protein EIF4EBP1 leading to the inhibition of cap-dependent translation. May establish and maintain high levels of viral genomes during persistent infection in cell culture.<ref>PMID:15680424</ref> <ref>PMID:15890927</ref> <ref>PMID:17936323</ref> <ref>PMID:8794333</ref> <ref>PMID:8917510</ref>
	== Evolutionary Conservation ==		== Evolutionary Conservation ==
	[[Image:Consurf_key_small.gif\|200px\|right]]		[[Image:Consurf_key_small.gif\|200px\|right]]
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	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 2pkg" style="background-color:#fffaf0;"></div>

	==See Also==		==See Also==
	*[[Protein phosphatase\|Protein phosphatase]]
	*[[Serine/threonine protein phosphatase\|Serine/threonine protein phosphatase]]		*[[Serine/threonine protein phosphatase\|Serine/threonine protein phosphatase]]
	== References ==		== References ==
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	__TOC__		__TOC__
	</StructureSection>		</StructureSection>
	[[Category: ~~Homo sapiens~~]]		[[Category: Human]]
	[[Category: ~~Simian virus 40~~]]		[[Category: Polyomavirus maccacae]]
	[[Category: Jeffrey, P D]]		[[Category: Jeffrey, P D]]
	[[Category: Shi, Y]]		[[Category: Shi, Y]]

OCA at 21:31, 24 December 2014

2014-12-24T21:31:31Z

← Older revision		Revision as of 21:31, 24 December 2014
Line 3:		Line 3:
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>[[2pkg]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://en.wikipedia.org/wiki/Simian_virus_40 Simian virus 40]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PKG OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2PKG FirstGlance]. <br>		<table><tr><td colspan='2'>[[2pkg]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://en.wikipedia.org/wiki/Simian_virus_40 Simian virus 40]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PKG OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2PKG FirstGlance]. <br>
	</td></tr><tr><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene><br>		</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
	<tr><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">PPP2R1A ([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">PPP2R1A ([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>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2pkg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2pkg OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2pkg RCSB], [http://www.ebi.ac.uk/pdbsum/2pkg 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=2pkg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2pkg OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2pkg RCSB], [http://www.ebi.ac.uk/pdbsum/2pkg PDBsum]</span></td></tr>
	<table>		</table>
			== Function ==
			[[http://www.uniprot.org/uniprot/2AAA_HUMAN 2AAA_HUMAN]] The PR65 subunit of protein phosphatase 2A serves as a scaffolding molecule to coordinate the assembly of the catalytic subunit and a variable regulatory B subunit. Required for proper chromosome segregation and for centromeric localization of SGOL1 in mitosis.<ref>PMID:16580887</ref>
	== Evolutionary Conservation ==		== Evolutionary Conservation ==
	[[Image:Consurf_key_small.gif\|200px\|right]]		[[Image:Consurf_key_small.gif\|200px\|right]]
Line 35:		Line 37:
	[[Category: Homo sapiens]]		[[Category: Homo sapiens]]
	[[Category: Simian virus 40]]		[[Category: Simian virus 40]]
	[[Category: Jeffrey, P D.]]		[[Category: Jeffrey, P D]]
	[[Category: Shi, Y.]]		[[Category: Shi, Y]]
	[[Category: Hydrolase regulator-viral protein complex]]		[[Category: Hydrolase regulator-viral protein complex]]
	[[Category: Protein phosphatase 2a]]		[[Category: Protein phosphatase 2a]]

OCA at 19:48, 30 September 2014

2014-09-30T19:48:45Z

← Older revision		Revision as of 19:48, 30 September 2014
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	[[Image:~~2pkg~~.~~png~~\|~~left~~\|~~200px~~]]		==Structure of a complex between the A subunit of protein phosphatase 2A and the small t antigen of SV40==
			<StructureSection load='2pkg' size='340' side='right' caption='[[2pkg]], [[Resolution\|resolution]] 3.30Å' scene=''>
			== Structural highlights ==
			<table><tr><td colspan='2'>[[2pkg]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://en.wikipedia.org/wiki/Simian_virus_40 Simian virus 40]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PKG OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2PKG FirstGlance]. <br>
			</td></tr><tr><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene><br>
			<tr><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">PPP2R1A ([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>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2pkg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2pkg OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2pkg RCSB], [http://www.ebi.ac.uk/pdbsum/2pkg PDBsum]</span></td></tr>
			<table>
			== 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/pk/2pkg_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 ==
			The small t antigen (ST) of DNA tumor virus SV40 facilitates cellular transformation by disrupting the functions of protein phosphatase 2A (PP2A) through a poorly defined mechanism. The crystal structure of the core domain of SV40 ST bound to the scaffolding subunit of human PP2A reveals that the ST core domain has a novel zinc-binding fold and interacts with the conserved ridge of HEAT repeats 3-6, which overlaps with the binding site for the B' (also called PR61 or B56) regulatory subunit. ST has a lower binding affinity than B' for the PP2A core enzyme. Consequently, ST does not efficiently displace B' from PP2A holoenzymes in vitro. Notably, ST inhibits PP2A phosphatase activity through its N-terminal J domain. These findings suggest that ST may function mainly by inhibiting the phosphatase activity of the PP2A core enzyme, and to a lesser extent by modulating assembly of the PP2A holoenzymes.

	~~{{STRUCTURE_2pkg\| PDB=2pkg \| SCENE= }}~~		Structural and biochemical insights into the regulation of protein phosphatase 2A by small t antigen of SV40.,Chen Y, Xu Y, Bao Q, Xing Y, Li Z, Lin Z, Stock JB, Jeffrey PD, Shi Y Nat Struct Mol Biol. 2007 Jun;14(6):527-34. Epub 2007 May 27. PMID:17529992<ref>PMID:17529992</ref>

	~~===Structure of~~ a ~~complex between the A subunit~~ of ~~protein phosphatase 2A and~~ the ~~small t antigen~~ of ~~SV40===~~		From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
			</div>

	~~{{ABSTRACT_PUBMED_17529992}}~~		==See Also==
			*[[Protein phosphatase\|Protein phosphatase]]
	==~~About this Structure~~==		*[[Serine/threonine protein phosphatase\|Serine/threonine protein phosphatase]]
	[[~~2pkg~~]] ~~is a 4 chain structure with sequence from~~ [~~http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and~~ [~~http://en.wikipedia.org~~/~~wiki~~/~~Simian_virus_40 Simian virus 40~~]~~. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PKG OCA~~].		== References ==
			<references/>
	==~~Reference~~==		__TOC__
	<~~ref group="xtra">PMID:017529992<~~/~~ref~~><~~references group="xtra"~~/>		</StructureSection>
	[[Category: Homo sapiens]]		[[Category: Homo sapiens]]
	[[Category: Simian virus 40]]		[[Category: Simian virus 40]]

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

2013-01-07T14:48:32Z

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

← Older revision	Revision as of 14:48, 7 January 2013
(No difference)

OCA at 14:48, 7 January 2013

2013-01-07T14:48:29Z

← Older revision		Revision as of 14:48, 7 January 2013
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	~~{{Seed}}~~
	[[Image:2pkg.png\|left\|200px]]		[[Image:2pkg.png\|left\|200px]]

	~~<!--~~
	~~The line below this paragraph, containing "STRUCTURE_2pkg", creates the "Structure Box" on the page.~~
	~~You may change the PDB parameter (which sets the PDB file loaded into the applet)~~
	~~or the SCENE parameter (which sets the initial scene displayed when the page is loaded),~~
	~~or leave the SCENE parameter empty for the default display.~~
	~~-->~~
	{{STRUCTURE_2pkg\| PDB=2pkg \| SCENE= }}		{{STRUCTURE_2pkg\| PDB=2pkg \| SCENE= }}

	===Structure of a complex between the A subunit of protein phosphatase 2A and the small t antigen of SV40===		===Structure of a complex between the A subunit of protein phosphatase 2A and the small t antigen of SV40===


	~~<!--~~
	~~The line below this paragraph, {{ABSTRACT_PUBMED_17529992}}, adds the Publication Abstract to the page~~
	~~(as it appears on PubMed at http://www.pubmed.gov), where 17529992 is the PubMed ID number.~~
	~~-->~~
	{{ABSTRACT_PUBMED_17529992}}		{{ABSTRACT_PUBMED_17529992}}

	==About this Structure==		==About this Structure==
	~~2PKG~~ is a 4 ~~chains~~ structure ~~of sequences~~ from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://en.wikipedia.org/wiki/Simian_virus_40 Simian virus 40]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PKG OCA].		[[2pkg]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://en.wikipedia.org/wiki/Simian_virus_40 Simian virus 40]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PKG OCA].

	==Reference==		==Reference==
	<ref group="xtra">PMID:~~17529992~~</ref><references group="xtra"/>		<ref group="xtra">PMID:017529992</ref><references group="xtra"/>
	[[Category: Homo sapiens]]		[[Category: Homo sapiens]]
	[[Category: Simian virus 40]]		[[Category: Simian virus 40]]
	[[Category: Jeffrey, P D.]]		[[Category: Jeffrey, P D.]]
	[[Category: Shi, Y.]]		[[Category: Shi, Y.]]
			[[Category: Hydrolase regulator-viral protein complex]]
	[[Category: Protein phosphatase 2a]]		[[Category: Protein phosphatase 2a]]
	[[Category: Regulation]]		[[Category: Regulation]]
	[[Category: Small t antigen]]		[[Category: Small t antigen]]
	[[Category: Sv40]]		[[Category: Sv40]]

	~~''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Feb 16 20:02:40 2009''~~

OCA at 18:02, 16 February 2009

2009-02-16T18:02:41Z

← Older revision		Revision as of 18:02, 16 February 2009
Line 20:		Line 20:

	==About this Structure==		==About this Structure==
	2PKG is a ~~[[Protein complex]]~~ structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://en.wikipedia.org/wiki/Simian_virus_40 Simian virus 40]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PKG OCA].		2PKG is a 4 chains structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://en.wikipedia.org/wiki/Simian_virus_40 Simian virus 40]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PKG OCA].

	==Reference==		==Reference==
	Structural and biochemical insights into the regulation of protein phosphatase 2A by small t antigen of SV40., Chen Y, Xu Y, Bao Q, Xing Y, Li Z, Lin Z, Stock JB, Jeffrey PD, Shi Y, Nat Struct Mol Biol. 2007 Jun;14(6):527-34. Epub 2007 May 27. PMID:~~[http:~~//~~www.ncbi.nlm.nih.gov/pubmed/17529992 17529992]~~		<ref group="xtra">PMID:17529992</ref><references group="xtra"/>
	[[Category: Homo sapiens]]		[[Category: Homo sapiens]]
	~~[[Category: Protein complex]]~~
	[[Category: Simian virus 40]]		[[Category: Simian virus 40]]
	[[Category: Jeffrey, P D.]]		[[Category: Jeffrey, P D.]]
Line 34:		Line 33:
	[[Category: Sv40]]		[[Category: Sv40]]

	''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon ~~Jul 28 00~~:10:~~16 2008~~''		''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Feb 16 20:02:40 2009''