1ia8

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{{STRUCTURE_1ia8| PDB=1ia8 | SCENE= }}
{{STRUCTURE_1ia8| PDB=1ia8 | SCENE= }}
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'''THE 1.7 A CRYSTAL STRUCTURE OF HUMAN CELL CYCLE CHECKPOINT KINASE CHK1'''
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===THE 1.7 A CRYSTAL STRUCTURE OF HUMAN CELL CYCLE CHECKPOINT KINASE CHK1===
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==Overview==
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The checkpoint kinase Chk1 is an important mediator of cell cycle arrest following DNA damage. The 1.7 A resolution crystal structures of the human Chk1 kinase domain and its binary complex with an ATP analog has revealed an identical open kinase conformation. The secondary structure and side chain interactions stabilize the activation loop of Chk1 and enable kinase activity without phosphorylation of the catalytic domain. Molecular modeling of the interaction of a Cdc25C peptide with Chk1 has uncovered several conserved residues that are important for substrate selectivity. In addition, we found that the less conserved C-terminal region negatively impacts Chk1 kinase activity.
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{{ABSTRACT_PUBMED_10761933}}
==About this Structure==
==About this Structure==
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[[Category: Tempczyk-Russell, A.]]
[[Category: Tempczyk-Russell, A.]]
[[Category: Protein kinase]]
[[Category: Protein kinase]]
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Revision as of 07:39, 1 July 2008

Image:1ia8.png

Template:STRUCTURE 1ia8

THE 1.7 A CRYSTAL STRUCTURE OF HUMAN CELL CYCLE CHECKPOINT KINASE CHK1

Template:ABSTRACT PUBMED 10761933

About this Structure

1IA8 is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

The 1.7 A crystal structure of human cell cycle checkpoint kinase Chk1: implications for Chk1 regulation., Chen P, Luo C, Deng Y, Ryan K, Register J, Margosiak S, Tempczyk-Russell A, Nguyen B, Myers P, Lundgren K, Kan CC, O'Connor PM, Cell. 2000 Mar 17;100(6):681-92. PMID:10761933

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