1bdw

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{{STRUCTURE_1bdw| PDB=1bdw | SCENE= }}
{{STRUCTURE_1bdw| PDB=1bdw | SCENE= }}
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'''GRAMICIDIN D FROM BACILLUS BREVIS (ACTIVE FORM)'''
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===GRAMICIDIN D FROM BACILLUS BREVIS (ACTIVE FORM)===
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==Overview==
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The linear pentadecapeptide antibiotic, gramicidin D, is a naturally occurring product of Bacillus brevis known to form ion channels in synthetic and natural membranes. The x-ray crystal structures of the right-handed double-stranded double-helical dimers (DSDH) reported here agree with 15N-NMR and CD data on the functional gramicidin D channel in lipid bilayers. These structures demonstrate single-file ion transfer through the channels. The results also indicate that previous crystal structure reports of a left-handed double-stranded double-helical dimer in complex with Cs+ and K+ salts may be in error and that our evidence points to the DSDH as the major conformer responsible for ion transport in membranes.
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(as it appears on PubMed at http://www.pubmed.gov), where 9789021 is the PubMed ID number.
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==About this Structure==
==About this Structure==
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[[Category: Pangborn, W A.]]
[[Category: Pangborn, W A.]]
[[Category: Peptide antibiotic]]
[[Category: Peptide antibiotic]]
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Revision as of 15:55, 30 June 2008

Image:1bdw.png

Template:STRUCTURE 1bdw

GRAMICIDIN D FROM BACILLUS BREVIS (ACTIVE FORM)

Template:ABSTRACT PUBMED 9789021

About this Structure

Full crystallographic information is available from OCA.

Reference

The conducting form of gramicidin A is a right-handed double-stranded double helix., Burkhart BM, Li N, Langs DA, Pangborn WA, Duax WL, Proc Natl Acad Sci U S A. 1998 Oct 27;95(22):12950-5. PMID:9789021

Page seeded by OCA on Mon Jun 30 18:55:45 2008

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