View source for 2x2m


==Crystal Structure of phosphorylated RET tyrosine kinase domain with inhibitor==
<StructureSection load='2x2m' size='340' side='right'caption='[[2x2m]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2x2m]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2X2M OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2X2M FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.5&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FMT:FORMIC+ACID'>FMT</scene>, <scene name='pdbligand=PTR:O-PHOSPHOTYROSINE'>PTR</scene>, <scene name='pdbligand=X2M:(3Z)-3-[(3,5-DIMETHYL-1H-PYRROL-2-YL)METHYLIDENE]-1,3-DIHYDRO-2H-INDOL-2-ONE'>X2M</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=2x2m FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2x2m OCA], [https://pdbe.org/2x2m PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2x2m RCSB], [https://www.ebi.ac.uk/pdbsum/2x2m PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2x2m ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/RET_HUMAN RET_HUMAN] Unilateral renal dysplasia;Familial medullary thyroid carcinoma;Multiple endocrine neoplasia type 2B;Multiple endocrine neoplasia type 2A;Hirschsprung disease;Bilateral renal agenesis;Bilateral renal dysplasia;Ondine syndrome;Papillary or follicular thyroid carcinoma. Colorectal cancer (CRC) [MIM:[https://omim.org/entry/114500 114500]: A complex disease characterized by malignant lesions arising from the inner wall of the large intestine (the colon) and the rectum. Genetic alterations are often associated with progression from premalignant lesion (adenoma) to invasive adenocarcinoma. Risk factors for cancer of the colon and rectum include colon polyps, long-standing ulcerative colitis, and genetic family history. Note=The disease may be caused by mutations affecting the gene represented in this entry.  Hirschsprung disease 1 (HSCR1) [MIM:[https://omim.org/entry/142623 142623]: A disorder of neural crest development characterized by absence of enteric ganglia along a variable length of the intestine. It is the most common cause of congenital intestinal obstruction. Early symptoms range from complete acute neonatal obstruction, characterized by vomiting, abdominal distention and failure to pass stool, to chronic constipation in the older child. Note=The disease is caused by mutations affecting the gene represented in this entry.<ref>PMID:7704557</ref> <ref>PMID:7881414</ref> <ref>PMID:8114938</ref> <ref>PMID:8114939</ref> <ref>PMID:7633441</ref> <ref>PMID:7581377</ref> <ref>PMID:8595427</ref> <ref>PMID:9043870</ref> <ref>PMID:9090527</ref> <ref>PMID:9259198</ref> <ref>PMID:9094028</ref> <ref>PMID:9384613</ref> <ref>PMID:10090908</ref> <ref>PMID:10484767</ref> <ref>PMID:10618407</ref> <ref>PMID:22174939</ref>   Medullary thyroid carcinoma (MTC) [MIM:[https://omim.org/entry/155240 155240]: Rare tumor derived from the C cells of the thyroid. Three hereditary forms are known, that are transmitted in an autosomal dominant fashion: (a) multiple neoplasia type 2A (MEN2A), (b) multiple neoplasia type IIB (MEN2B) and (c) familial MTC (FMTC), which occurs in 25-30% of MTC cases and where MTC is the only clinical manifestation. Note=The disease is caused by mutations affecting the gene represented in this entry.<ref>PMID:7881414</ref> <ref>PMID:9259198</ref> <ref>PMID:7849720</ref> <ref>PMID:7874109</ref> <ref>PMID:8625130</ref> <ref>PMID:7845675</ref> <ref>PMID:7784092</ref> <ref>PMID:8557249</ref> <ref>PMID:8807338</ref> <ref>PMID:9398735</ref> <ref>PMID:9223675</ref> <ref>PMID:9677065</ref> <ref>PMID:9452077</ref> <ref>PMID:9506724</ref> <ref>PMID:9621513</ref> <ref>PMID:10323403</ref> <ref>PMID:10826520</ref> <ref>PMID:11692159</ref>   Multiple neoplasia 2B (MEN2B) [MIM:[https://omim.org/entry/162300 162300]: Uncommon inherited cancer syndrome characterized by predisposition to MTC and phaeochromocytoma which is associated with marfanoid habitus, mucosal neuromas, skeletal and ophtalmic abnormalities, and ganglioneuromas of the intestine tract. Then the disease progresses rapidly with the development of metastatic MTC and a pheochromocytome in 50% of cases. Note=The disease is caused by mutations affecting the gene represented in this entry.<ref>PMID:8625130</ref> <ref>PMID:8807338</ref> <ref>PMID:9223675</ref> <ref>PMID:7911697</ref> <ref>PMID:7906866</ref> <ref>PMID:7906417</ref> <ref>PMID:8595427</ref> <ref>PMID:9360560</ref> <ref>PMID:9294615</ref>   Pheochromocytoma (PCC) [MIM:[https://omim.org/entry/171300 171300]: A catecholamine-producing tumor of chromaffin tissue of the adrenal medulla or sympathetic paraganglia. The cardinal symptom, reflecting the increased secretion of epinephrine and norepinephrine, is hypertension, which may be persistent or intermittent. Note=Disease susceptibility is associated with variations affecting the gene represented in this entry.  Multiple neoplasia 2A (MEN2A) [MIM:[https://omim.org/entry/171400 171400]: The most frequent form of medullary thyroid cancer (MTC). It is an inherited cancer syndrome characterized by MTC, phaeochromocytoma and/or hyperparathyroidism. Note=The disease is caused by mutations affecting the gene represented in this entry.<ref>PMID:7881414</ref> <ref>PMID:9384613</ref> <ref>PMID:7874109</ref> <ref>PMID:8625130</ref> <ref>PMID:8807338</ref> <ref>PMID:9223675</ref> <ref>PMID:9621513</ref> <ref>PMID:8103403</ref> <ref>PMID:8099202</ref> <ref>PMID:7915165</ref> <ref>PMID:7860065</ref> <ref>PMID:8626834</ref> <ref>PMID:9097963</ref> <ref>PMID:9452064</ref> <ref>PMID:10522989</ref>   Thyroid papillary carcinoma (TPC) [MIM:[https://omim.org/entry/188550 188550]: A common tumor of the thyroid that typically arises as an irregular, solid or cystic mass from otherwise normal thyroid tissue. Papillary carcinomas are malignant neoplasm characterized by the formation of numerous, irregular, finger-like projections of fibrous stroma that is covered with a surface layer of neoplastic epithelial cells. Note=The gene represented in this entry is involved in disease pathogenesis. Chromosomal aberrations involving RET have been found in thyroid papillary carcinomas. Inversion inv(10)(q11.2;q21) generates the RET/CCDC6 (PTC1) oncogene; inversion inv(10)(q11.2;q11.2) generates the RET/NCOA4 (PTC3) oncogene; translocation t(10;14)(q11;q32) with GOLGA5 generates the RET/GOLGA5 (PTC5) oncogene; translocation t(8;10)(p21.3;q11.2) with PCM1 generates the PCM1/RET fusion; translocation t(6;10)(p21.3;q11.2) with RFP generates the Delta RFP/RET oncogene; translocation t(1;10)(p13;q11) with TRIM33 generates the TRIM33/RET (PTC7) oncogene; translocation t(7;10)(q32;q11) with TRIM24/TIF1 generates the TRIM24/RET (PTC6) oncogene. The PTC5 oncogene has been found in 2 cases of PACT in children exposed to radioactive fallout after Chernobyl. A chromosomal aberration involving TRIM27/RFP is found in thyroid papillary carcinomas. Translocation t(6;10)(p21.3;q11.2) with RET. The translocation generates TRIM27/RET and delta TRIM27/RET oncogenes.  Renal adysplasia (RADYS) [MIM:[https://omim.org/entry/191830 191830]: Renal agenesis refers to the absence of one (unilateral) or both (bilateral) kidneys at birth. Bilateral renal agenesis belongs to a group of perinatally lethal renal diseases, including severe bilateral renal dysplasia, unilateral renal agenesis with contralateral dysplasia and severe obstructive uropathy. Note=The disease is caused by mutations affecting the gene represented in this entry.<ref>PMID:18252215</ref>   Congenital central hypoventilation syndrome (CCHS) [MIM:[https://omim.org/entry/209880 209880]: Rare disorder characterized by abnormal control of respiration in the absence of neuromuscular or lung disease, or an identifiable brain stem lesion. A deficiency in autonomic control of respiration results in inadequate or negligible ventilatory and arousal responses to hypercapnia and hypoxemia. Note=The disease is caused by mutations affecting the gene represented in this entry.<ref>PMID:9497256</ref> <ref>PMID:12086152</ref> <ref>PMID:14566559</ref> 
== Function ==
[https://www.uniprot.org/uniprot/RET_HUMAN RET_HUMAN] Receptor tyrosine-protein kinase involved in numerous cellular mechanisms including cell proliferation, neuronal navigation, cell migration, and cell differentiation upon binding with glial cell derived neurotrophic factor family ligands. Phosphorylates PTK2/FAK1. Regulates both cell death/survival balance and positional information. Required for the molecular mechanisms orchestration during intestine organogenesis; involved in the development of enteric nervous system and renal organogenesis during embryonic life, and promotes the formation of Peyer's patch-like structures, a major component of the gut-associated lymphoid tissue. Modulates cell adhesion via its cleavage by caspase in sympathetic neurons and mediates cell migration in an integrin (e.g. ITGB1 and ITGB3)-dependent manner. Involved in the development of the neural crest. Active in the absence of ligand, triggering apoptosis through a mechanism that requires receptor intracellular caspase cleavage. Acts as a dependence receptor; in the presence of the ligand GDNF in somatotrophs (within pituitary), promotes survival and down regulates growth hormone (GH) production, but triggers apoptosis in absence of GDNF. Regulates nociceptor survival and size. Triggers the differentiation of rapidly adapting (RA) mechanoreceptors. Mediator of several diseases such as neuroendocrine cancers; these diseases are characterized by aberrant integrins-regulated cell migration.<ref>PMID:20064382</ref> <ref>PMID:20616503</ref> <ref>PMID:20702524</ref> <ref>PMID:21357690</ref> <ref>PMID:21454698</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/x2/2x2m_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/main_output.php?pdb_ID=2x2m ConSurf].
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== Publication Abstract from PubMed ==
The synthesis, structure-activity relationships (SAR) and structural data of a series of indolin-2-one inhibitors of RET tyrosine kinase are described. These compounds were designed to explore the available space around the indolinone scaffold within RET active site. Several substitutions at different positions were tested and biochemical data were used to draw a molecular model of steric and electrostatic interactions, which can be applied to design more potent and selective RET inhibitors. The crystal structures of RET kinase domain in complex with three inhibitors were solved. All three compounds bound in the ATP pocket and formed two hydrogen bonds with the kinase hinge region. Crystallographic analysis confirmed predictions from molecular modelling and helped refine SAR results. These data provide important information for the development of indolinone inhibitors for the treatment of RET-driven cancers.

Synthesis, structure-activity relationship and crystallographic studies of 3-substituted indolin-2-one RET inhibitors.,Mologni L, Rostagno R, Brussolo S, Knowles PP, Kjaer S, Murray-Rust J, Rosso E, Zambon A, Scapozza L, McDonald NQ, Lucchini V, Gambacorti-Passerini C Bioorg Med Chem. 2010 Feb 15;18(4):1482-96. Epub 2010 Jan 11. PMID:20117004<ref>PMID:20117004</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 2x2m" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Kjaer S]]
[[Category: Knowles PP]]
[[Category: McDonald NQ]]
[[Category: Murray-Rust J]]