1xte
From Proteopedia
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'''crystal structure of CISK-PX domain''' | '''crystal structure of CISK-PX domain''' | ||
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[[Category: Xu, W.]] | [[Category: Xu, W.]] | ||
[[Category: Zhang, R.]] | [[Category: Zhang, R.]] | ||
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Revision as of 12:29, 3 May 2008
crystal structure of CISK-PX domain
Overview
The cytokine-independent survival kinase (CISK) in the serum and glucocorticoid-regulated kinase family plays an important role in mediating cell growth and survival. N-terminal to its catalytic kinase domain, CISK contains a phox homology (PX) domain, a phosphoinositide-binding motif that directs the membrane localization of CISK and regulates CISK activity. We have determined the crystal structures of the mouse CISK-PX domain to unravel the structural basis of membrane targeting of CISK. In addition to the specific interactions conferred by the phosphoinositide-binding pocket, the structure suggests that a hydrophobic loop region and a hydrophilic beta-turn contribute to the interactions with the membrane. Furthermore, biochemical studies reveal that CISK-PX dimerizes in the presence of the linker between the PX domain and kinase domain, suggesting a multivalent mechanism in membrane localization of CISK.
About this Structure
1XTE is a Single protein structure of sequence from Mus musculus. Full crystallographic information is available from OCA.
Reference
Structural basis of membrane targeting by the Phox homology domain of cytokine-independent survival kinase (CISK-PX)., Xing Y, Liu D, Zhang R, Joachimiak A, Songyang Z, Xu W, J Biol Chem. 2004 Jul 16;279(29):30662-9. Epub 2004 May 4. PMID:15126499 Page seeded by OCA on Sat May 3 15:29:21 2008
