1deg: Difference between revisions

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'''THE LINKER OF DES-GLU84 CALMODULIN IS BENT AS SEEN IN THE CRYSTAL STRUCTURE'''
===THE LINKER OF DES-GLU84 CALMODULIN IS BENT AS SEEN IN THE CRYSTAL STRUCTURE===




==Overview==
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The crystal structure of a mutant calmodulin (CaM) lacking Glu-84 has been refined to R = 0.23 using data measured to 2.9-A resolution. In native CaM the central helix is fully extended, and the molecule is dumbbell shaped. In contrast, the deletion of Glu-84 causes a bend of 95 degrees in the linker region of the central helix at Ile-85. However, EF-hand domains 1 and 2 (lobe 1,2) do not touch lobe 3,4. The length, by alpha-carbon separation, of des-Glu84-CaM is 56 A; that of native CaM is 64 A. The shape of des-Glu84-CaM is similar to that of native CaM, as it is bound to the target peptide of myosin light-chain kinase. This result supports the proposal that the linker region of the central helix of CaM functions as a flexible tether.
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==About this Structure==
==About this Structure==
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[[Category: Sobottk, S E.]]
[[Category: Sobottk, S E.]]
[[Category: Calcium-binding protein]]
[[Category: Calcium-binding protein]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May  2 13:45:35 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 22:54:09 2008''

Revision as of 22:54, 30 June 2008

File:1deg.png

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THE LINKER OF DES-GLU84 CALMODULIN IS BENT AS SEEN IN THE CRYSTAL STRUCTURETHE LINKER OF DES-GLU84 CALMODULIN IS BENT AS SEEN IN THE CRYSTAL STRUCTURE

Template:ABSTRACT PUBMED 8341712

About this StructureAbout this Structure

1DEG is a Single protein structure of sequence from Bos taurus. Full crystallographic information is available from OCA.

ReferenceReference

The linker of des-Glu84-calmodulin is bent., Raghunathan S, Chandross RJ, Cheng BP, Persechini A, Sobottka SE, Kretsinger RH, Proc Natl Acad Sci U S A. 1993 Jul 15;90(14):6869-73. PMID:8341712

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