1o83: Difference between revisions

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[[Image:1o83.jpg|left|200px]]
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[[Image:1o83.png|left|200px]]


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{{STRUCTURE_1o83|  PDB=1o83  |  SCENE=  }}  
{{STRUCTURE_1o83|  PDB=1o83  |  SCENE=  }}  


'''CRYSTAL STRUCTURE OF BACTERIOCIN AS-48 AT PH 7.5, PHOSPHATE BOUND. CRYSTAL FORM I'''
===CRYSTAL STRUCTURE OF BACTERIOCIN AS-48 AT PH 7.5, PHOSPHATE BOUND. CRYSTAL FORM I===




==Overview==
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The bacteriocin AS-48 is a membrane-interacting peptide, which displays a broad anti-microbial spectrum against Gram-positive and Gram-negative bacteria. The NMR structure of AS-48 at pH 3 has been solved. The analysis of this structure suggests that the mechanism of AS-48 anti-bacterial activity involves the accumulation of positively charged molecules at the membrane surface leading to a disruption of the membrane potential. Here, we report the high-resolution crystal structure of AS-48 and sedimentation equilibrium experiments showing that this bacteriocin is able to adopt different oligomeric structures according to the physicochemical environment. The analysis of these structures suggests a mechanism for molecular function of AS-48 involving a transition from a water-soluble form to a membrane-bound state upon membrane binding.
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{{ABSTRACT_PUBMED_14623193}}


==About this Structure==
==About this Structure==
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[[Category: Protein crystallography]]
[[Category: Protein crystallography]]
[[Category: Protein membrane interaction]]
[[Category: Protein membrane interaction]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 03:30:17 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 07:45:30 2008''

Revision as of 04:45, 29 July 2008

File:1o83.png

Template:STRUCTURE 1o83

CRYSTAL STRUCTURE OF BACTERIOCIN AS-48 AT PH 7.5, PHOSPHATE BOUND. CRYSTAL FORM I

Template:ABSTRACT PUBMED 14623193

About this Structure

1O83 is a Single protein structure of sequence from Enterococcus faecalis. Full crystallographic information is available from OCA.

Reference

Structure of bacteriocin AS-48: from soluble state to membrane bound state., Sanchez-Barrena MJ, Martinez-Ripoll M, Galvez A, Valdivia E, Maqueda M, Cruz V, Albert A, J Mol Biol. 2003 Nov 28;334(3):541-9. PMID:14623193

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