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== | ==CRYSTAL STRUCTURE OF HCK IN COMPLEX WITH A SRC FAMILY-SELECTIVE TYROSINE KINASE INHIBITOR== | ||
<StructureSection load='1qcf' size='340' side='right'caption='[[1qcf]], [[Resolution|resolution]] 2.00Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1qcf]] is a 1 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=1QCF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QCF 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]] 2Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PP1:1-TER-BUTYL-3-P-TOLYL-1H-PYRAZOLO[3,4-D]PYRIMIDIN-4-YLAMINE'>PP1</scene>, <scene name='pdbligand=PTR:O-PHOSPHOTYROSINE'>PTR</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=1qcf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qcf OCA], [https://pdbe.org/1qcf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1qcf RCSB], [https://www.ebi.ac.uk/pdbsum/1qcf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1qcf ProSAT]</span></td></tr> | |||
</table> | |||
== Disease == | |||
[https://www.uniprot.org/uniprot/HCK_HUMAN HCK_HUMAN] Note=Aberrant activation of HCK by HIV-1 protein Nef enhances HIV-1 replication and contributes to HIV-1 pathogenicity.<ref>PMID:19114024</ref> <ref>PMID:20452982</ref> Note=Aberrant activation of HCK, e.g. by the BCR-ABL fusion protein, promotes cancer cell proliferation.<ref>PMID:19114024</ref> <ref>PMID:20452982</ref> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/HCK_HUMAN HCK_HUMAN] Non-receptor tyrosine-protein kinase found in hematopoietic cells that transmits signals from cell surface receptors and plays an important role in the regulation of innate immune responses, including neutrophil, monocyte, macrophage and mast cell functions, phagocytosis, cell survival and proliferation, cell adhesion and migration. Acts downstream of receptors that bind the Fc region of immunoglobulins, such as FCGR1A and FCGR2A, but also CSF3R, PLAUR, the receptors for IFNG, IL2, IL6 and IL8, and integrins, such as ITGB1 and ITGB2. During the phagocytic process, mediates mobilization of secretory lysosomes, degranulation, and activation of NADPH oxidase to bring about the respiratory burst. Plays a role in the release of inflammatory molecules. Promotes reorganization of the actin cytoskeleton and actin polymerization, formation of podosomes and cell protrusions. Inhibits TP73-mediated transcription activation and TP73-mediated apoptosis. Phosphorylates CBL in response to activation of immunoglobulin gamma Fc region receptors. Phosphorylates ADAM15, BCR, ELMO1, FCGR2A, GAB1, GAB2, RAPGEF1, STAT5B, TP73, VAV1 and WAS.<ref>PMID:8132624</ref> <ref>PMID:7535819</ref> <ref>PMID:9406996</ref> <ref>PMID:9407116</ref> <ref>PMID:10092522</ref> <ref>PMID:10779760</ref> <ref>PMID:10973280</ref> <ref>PMID:12411494</ref> <ref>PMID:11741929</ref> <ref>PMID:11904303</ref> <ref>PMID:11896602</ref> <ref>PMID:15010462</ref> <ref>PMID:15952790</ref> <ref>PMID:15998323</ref> <ref>PMID:17535448</ref> <ref>PMID:17310994</ref> <ref>PMID:19114024</ref> <ref>PMID:19903482</ref> <ref>PMID:20452982</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/qc/1qcf_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=1qcf ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The crystal structure of the autoinhibited form of Hck has been determined at 2.0 A resolution, in complex with a specific pyrazolo pyrimidine-type inhibitor, PP1. The activation segment, a key regulatory component of the catalytic domain, is unphosphorylated and is visualized in its entirety. Tyr-416, the site of activating autophosphorylation in the Src family kinases, is positioned such that access to the catalytic machinery is blocked. PP1 is bound at the ATP-binding site of the kinase, and a methylphenyl group on PP1 is inserted into an adjacent hydrophobic pocket. The enlargement of this pocket in autoinhibited Src kinases suggests a route toward the development of inhibitors that are specific for the inactive forms of these proteins. | The crystal structure of the autoinhibited form of Hck has been determined at 2.0 A resolution, in complex with a specific pyrazolo pyrimidine-type inhibitor, PP1. The activation segment, a key regulatory component of the catalytic domain, is unphosphorylated and is visualized in its entirety. Tyr-416, the site of activating autophosphorylation in the Src family kinases, is positioned such that access to the catalytic machinery is blocked. PP1 is bound at the ATP-binding site of the kinase, and a methylphenyl group on PP1 is inserted into an adjacent hydrophobic pocket. The enlargement of this pocket in autoinhibited Src kinases suggests a route toward the development of inhibitors that are specific for the inactive forms of these proteins. | ||
Crystal structure of Hck in complex with a Src family-selective tyrosine kinase inhibitor.,Schindler T, Sicheri F, Pico A, Gazit A, Levitzki A, Kuriyan J Mol Cell. 1999 May;3(5):639-48. PMID:10360180<ref>PMID:10360180</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 1qcf" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Tyrosine kinase 3D structures|Tyrosine kinase 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Gazit | [[Category: Gazit A]] | ||
[[Category: Kuriyan | [[Category: Kuriyan J]] | ||
[[Category: Levitzki | [[Category: Levitzki A]] | ||
[[Category: Pico | [[Category: Pico A]] | ||
[[Category: Schindler | [[Category: Schindler T]] | ||
[[Category: Sicheri | [[Category: Sicheri F]] | ||