1ssl
From Proteopedia
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'''Solution structure of the PSI domain from the Met receptor''' | '''Solution structure of the PSI domain from the Met receptor''' | ||
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[[Category: Perreault, A.]] | [[Category: Perreault, A.]] | ||
[[Category: Schrag, J D.]] | [[Category: Schrag, J D.]] | ||
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| - | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 09:05:36 2008'' | |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | |
Revision as of 06:05, 3 May 2008
Solution structure of the PSI domain from the Met receptor
Overview
PSI domains are cysteine-rich modules found in extracellular fragments of hundreds of signaling proteins, including plexins, semaphorins, integrins, and attractins. Here, we report the solution structure of the PSI domain from the human Met receptor, a receptor tyrosine kinase critical for proliferation, motility, and differentiation. The structure represents a cysteine knot with short regions of secondary structure including a three-stranded antiparallel beta-sheet and two alpha-helices. All eight cysteines are involved in disulfide bonds with the pattern consistent with that for the PSI domain from Sema4D. Comparison with the Sema4D structure identifies a structurally conserved core comprising the N-terminal half of the PSI domain. Interestingly, this part links adjacent SEMA and immunoglobulin domains in the Sema4D structure, suggesting that the PSI domain serves as a wedge between propeller and immunoglobulin domains and is responsible for the correct positioning of the ligand-binding site of the receptor.
About this Structure
1SSL is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Insights into function of PSI domains from structure of the Met receptor PSI domain., Kozlov G, Perreault A, Schrag JD, Park M, Cygler M, Gehring K, Ekiel I, Biochem Biophys Res Commun. 2004 Aug 13;321(1):234-40. PMID:15358240 Page seeded by OCA on Sat May 3 09:05:36 2008
