1ob4

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{{STRUCTURE_1ob4| PDB=1ob4 | SCENE= }}
{{STRUCTURE_1ob4| PDB=1ob4 | SCENE= }}
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'''CEPHAIBOL A'''
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===CEPHAIBOL A===
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==Overview==
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The crystal structures of the peptaibol antibiotics cephaibol A, cephaibol B and cephaibol C have been determined at ca. 0.9 A resolution. All three adopt a helical conformation with a sharp bend (of about 55 degrees) at the central hydroxyproline. All isovalines were found to possess the D configuration, superposition of all four models (there are two independent molecules in the cephaibol B structure) shows that the N-terminal helix is rigid and the C-terminus is flexible. There are differences in the hydrogen bonding patterns for the three structures that crystallize in different space groups despite relatively similar unit cell dimensions, but only in the case of cephaibol C does the packing emulate the formation of a membrane channel believed to be important for their biological function.
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(as it appears on PubMed at http://www.pubmed.gov), where 14658793 is the PubMed ID number.
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{{ABSTRACT_PUBMED_14658793}}
==About this Structure==
==About this Structure==
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[[Category: Ion channel]]
[[Category: Ion channel]]
[[Category: Peptaibol]]
[[Category: Peptaibol]]
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Revision as of 21:34, 27 July 2008

Image:1ob4.png

Template:STRUCTURE 1ob4

CEPHAIBOL A

Template:ABSTRACT PUBMED 14658793

About this Structure

1OB4 is a Single protein structure of sequence from Acremonium tubakii. Full crystallographic information is available from OCA.

Reference

Crystal structures of cephaibols., Bunkoczi G, Schiell M, Vertesy L, Sheldrick GM, J Pept Sci. 2003 Nov-Dec;9(11-12):745-52. PMID:14658793

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