1cta

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[[Image:1cta.gif|left|200px]]
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{{STRUCTURE_1cta| PDB=1cta | SCENE= }}
{{STRUCTURE_1cta| PDB=1cta | SCENE= }}
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'''DETERMINATION OF THE SOLUTION STRUCTURE OF A SYNTHETIC TWO-SITE CALCIUM-BINDING HOMODIMERIC PROTEIN DOMAIN BY NMR SPECTROSCOPY'''
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===DETERMINATION OF THE SOLUTION STRUCTURE OF A SYNTHETIC TWO-SITE CALCIUM-BINDING HOMODIMERIC PROTEIN DOMAIN BY NMR SPECTROSCOPY===
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==Overview==
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The solution structure of a 34-residue synthetic calcium-binding peptide from site III of chicken troponin-C has been determined by 1H NMR spectroscopy. In solution and in the presence of calcium this peptide forms a symmetric two-site homodimeric calcium-binding domain (Shaw et al., 1990). The solution structure of this dimer was determined from the measurement of 470 NOEs from a 75-ms NOESY data set. For the dimer structure determination, the constraint list included 868 distance restraints, 44 phi angles, and 24 chi 1 and 2 chi 2 angles. Seven structures were calculated by restrained molecular dynamics using a procedure in which intramonomer distances were used first and then all distances, intra- and intermonomer, were input during further dynamics. The structures exhibited a fold very similar to the C-terminal domain of troponin-C comprised of a pair of helix-loop-helix calcium-binding sites. The rms deviation of these structures for backbone atoms between residues 97-122 and 97'-122' for the dimer was 0.82 A. The dimer structure was also calculated to be more symmetric than sites III and IV in troponin-C.
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The line below this paragraph, {{ABSTRACT_PUBMED_1390738}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 1390738 is the PubMed ID number.
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{{ABSTRACT_PUBMED_1390738}}
==About this Structure==
==About this Structure==
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1CTA is a [[Single protein]] structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CTA OCA].
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1CTA is a [[Single protein]] structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CTA OCA].
==Reference==
==Reference==
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[[Category: Sykes, B D.]]
[[Category: Sykes, B D.]]
[[Category: Muscle protein]]
[[Category: Muscle protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 13:05:37 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 21:20:22 2008''

Revision as of 18:20, 30 June 2008

Image:1cta.png

Template:STRUCTURE 1cta

DETERMINATION OF THE SOLUTION STRUCTURE OF A SYNTHETIC TWO-SITE CALCIUM-BINDING HOMODIMERIC PROTEIN DOMAIN BY NMR SPECTROSCOPY

Template:ABSTRACT PUBMED 1390738

About this Structure

1CTA is a Single protein structure. Full experimental information is available from OCA.

Reference

Determination of the solution structure of a synthetic two-site calcium-binding homodimeric protein domain by NMR spectroscopy., Shaw GS, Hodges RS, Sykes BD, Biochemistry. 1992 Oct 13;31(40):9572-80. PMID:1390738

Page seeded by OCA on Mon Jun 30 21:20:22 2008

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