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1cki

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{{STRUCTURE_1cki| PDB=1cki | SCENE= }}
{{STRUCTURE_1cki| PDB=1cki | SCENE= }}
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'''RECOMBINANT CASEIN KINASE I DELTA TRUNCATION MUTANT CONTAINING RESIDUES 1-317'''
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===RECOMBINANT CASEIN KINASE I DELTA TRUNCATION MUTANT CONTAINING RESIDUES 1-317===
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==Overview==
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The three-dimensional structure for the catalytic region of the mammalian protein kinase, casein kinase I delta (CKI delta), has been solved by X-ray crystallography to a resolution of 2.3 A. A truncation mutant of CKI delta lacking the C-terminal autoinhibitory region was expressed in Escherichia coli, purified, and crystallized. The structure was solved by molecular replacement using the crystal structure of the catalytic domain of a CKI homolog from Schizosaccharomyces pombe, Cki1. A tungstate derivative confirmed the initial molecular replacement solution and identified an anion binding site which may contribute to the unique substrate specificity of CKI. Like other protein kinases, the catalytic domain of CKI is composed of two lobes with a cleft between them for binding ATP. Comparison of the mammalian and yeast CKI structures suggests that a rotation of the N-terminal domain occurs upon ATP binding. This domain motion is similar, but not identical, to that observed in cAMP-dependent protein kinase upon binding ATP. Although Cki1 has many similarities to CKI delta over the catalytic domain, these two forms of CKI likely perform different functions in vivo. Relating the primary sequences of other CKI enzymes to the three-dimensional architecture of CKI delta reveals a catalytic face that is especially conserved among the subset of CKI family members associated with the regulation of DNA repair.
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(as it appears on PubMed at http://www.pubmed.gov), where 8648628 is the PubMed ID number.
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{{ABSTRACT_PUBMED_8648628}}
==About this Structure==
==About this Structure==
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[[Category: Roach, P J.]]
[[Category: Roach, P J.]]
[[Category: Protein kinase]]
[[Category: Protein kinase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 12:49:55 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 20:52:12 2008''

Revision as of 17:52, 30 June 2008

Image:1cki.png

Template:STRUCTURE 1cki

RECOMBINANT CASEIN KINASE I DELTA TRUNCATION MUTANT CONTAINING RESIDUES 1-317

Template:ABSTRACT PUBMED 8648628

About this Structure

1CKI is a Single protein structure of sequence from Rattus norvegicus. Full crystallographic information is available from OCA.

Reference

Three-dimensional structure of mammalian casein kinase I: molecular basis for phosphate recognition., Longenecker KL, Roach PJ, Hurley TD, J Mol Biol. 1996 Apr 5;257(3):618-31. PMID:8648628

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