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1cfc

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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1cfc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1cfc OCA], [http://www.ebi.ac.uk/pdbsum/1cfc PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1cfc RCSB]</span>
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'''CALCIUM-FREE CALMODULIN'''
'''CALCIUM-FREE CALMODULIN'''
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[[Category: Ren, H.]]
[[Category: Ren, H.]]
[[Category: Tjandra, N.]]
[[Category: Tjandra, N.]]
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[[Category: calcium-binding protein]]
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[[Category: Calcium-binding protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 19:20:33 2008''
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Revision as of 09:40, 2 May 2008

Image:1cfc.gif


PDB ID 1cfc

Drag the structure with the mouse to rotate
1cfc, 25 NMR models ()
Related: 1cfd
Resources: FirstGlance, OCA, RCSB, PDBsum
Coordinates: save as pdb, mmCIF, xml



CALCIUM-FREE CALMODULIN


Overview

The three-dimensional structure of calmodulin in the absence of Ca2+ has been determined by three- and four-dimensional heteronuclear NMR experiments, including ROE, isotope-filtering combined with reverse labelling, and measurement of more than 700 three-bond J-couplings. In analogy with the Ca(2+)-ligated state of this protein, it consists of two small globular domains separated by a flexible linker, with no stable, direct contacts between the two domains. In the absence of Ca2+, the four helices in each of the two globular domains form a highly twisted bundle, capped by a short anti-parallel beta-sheet. This arrangement is qualitatively similar to that observed in the crystal structure of the Ca(2+)-free N-terminal domain of troponin C.

About this Structure

1CFC is a Single protein structure of sequence from Xenopus laevis. Full crystallographic information is available from OCA.

Reference

Solution structure of calcium-free calmodulin., Kuboniwa H, Tjandra N, Grzesiek S, Ren H, Klee CB, Bax A, Nat Struct Biol. 1995 Sep;2(9):768-76. PMID:7552748 Page seeded by OCA on Fri May 2 12:40:28 2008

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