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[[Image:1koa.gif|left|200px]]
{{Seed}}
[[Image:1koa.png|left|200px]]


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{{STRUCTURE_1koa|  PDB=1koa  |  SCENE=  }}  
{{STRUCTURE_1koa|  PDB=1koa  |  SCENE=  }}  


'''TWITCHIN KINASE FRAGMENT (C.ELEGANS), AUTOREGULATED PROTEIN KINASE AND IMMUNOGLOBULIN DOMAINS'''
===TWITCHIN KINASE FRAGMENT (C.ELEGANS), AUTOREGULATED PROTEIN KINASE AND IMMUNOGLOBULIN DOMAINS===




==Overview==
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The myosin-associated giant protein kinases twitchin and titin are composed predominantly of fibronectin- and immunoglobulin-like modules. We report the crystal structures of two autoinhibited twitchin kinase fragments, one from Aplysia and a larger fragment from Caenorhabditis elegans containing an additional C-terminal immunoglobulin-like domain. The structure of the longer fragment shows that the immunoglobulin domain contacts the protein kinase domain on the opposite side from the catalytic cleft, laterally exposing potential myosin binding residues. Together, the structures reveal the cooperative interactions between the autoregulatory region and the residues from the catalytic domain involved in protein substrate binding, ATP binding, catalysis and the activation loop, and explain the differences between the observed autoinhibitory mechanism and the one found in the structure of calmodulin-dependent kinase I.
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{{ABSTRACT_PUBMED_9003756}}


==About this Structure==
==About this Structure==
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[[Category: Kinase]]
[[Category: Kinase]]
[[Category: Twitchin]]
[[Category: Twitchin]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Jul 2 10:38:19 2008''

Revision as of 07:38, 2 July 2008

File:1koa.png

Template:STRUCTURE 1koa

TWITCHIN KINASE FRAGMENT (C.ELEGANS), AUTOREGULATED PROTEIN KINASE AND IMMUNOGLOBULIN DOMAINS

Template:ABSTRACT PUBMED 9003756

About this Structure

1KOA is a Single protein structure of sequence from Caenorhabditis elegans. Full crystallographic information is available from OCA.

Reference

Giant protein kinases: domain interactions and structural basis of autoregulation., Kobe B, Heierhorst J, Feil SC, Parker MW, Benian GM, Weiss KR, Kemp BE, EMBO J. 1996 Dec 16;15(24):6810-21. PMID:9003756

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