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2o27
From Proteopedia
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|ACTIVITY= | |ACTIVITY= | ||
|GENE= Kitlg, Kitl, Mgf, Sl, Slf ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 Mus musculus]) | |GENE= Kitlg, Kitl, Mgf, Sl, Slf ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 Mus musculus]) | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY=[[2o26|2O26]] | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2o27 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2o27 OCA], [http://www.ebi.ac.uk/pdbsum/2o27 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2o27 RCSB]</span> | ||
}} | }} | ||
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[[Category: stem cell factor]] | [[Category: stem cell factor]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 04:11:38 2008'' |
Revision as of 01:11, 31 March 2008
| |||||||
| , resolution 2.20Å | |||||||
|---|---|---|---|---|---|---|---|
| Gene: | Kitlg, Kitl, Mgf, Sl, Slf (Mus musculus) | ||||||
| Related: | 2O26
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Structure of a class III RTK signaling assembly
Overview
Stem cell factor (SCF) binds to and activates the KIT receptor, a class III receptor tyrosine kinase (RTK), to stimulate diverse processes including melanogenesis, gametogenesis and hematopoeisis. Dysregulation of KIT activation is associated with many cancers. We report a 2.5 A crystal structure of the functional core of SCF bound to the extracellular ligand-binding domains of KIT. The structure reveals a 'wrapping' SCF-recognition mode by KIT, in which KIT adopts a bent conformation to facilitate each of its first three immunoglobulin (Ig)-like domains to interact with SCF. Three surface epitopes on SCF, an extended loop, the B and C helices, and the N-terminal segment, contact distinct KIT domains, with two of the epitopes undergoing large conformational changes upon receptor binding. The SCF/KIT complex reveals a unique RTK dimerization assembly, and a novel recognition mode between four-helix bundle cytokines and Ig-family receptors. It serves as a framework for understanding the activation mechanisms of class III RTKs.
About this Structure
2O27 is a Single protein structure of sequence from Mus musculus. Full crystallographic information is available from OCA.
Reference
Structural basis for stem cell factor-KIT signaling and activation of class III receptor tyrosine kinases., Liu H, Chen X, Focia PJ, He X, EMBO J. 2007 Feb 7;26(3):891-901. Epub 2007 Jan 25. PMID:17255936
Page seeded by OCA on Mon Mar 31 04:11:38 2008
