1o83: Difference between revisions
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==Crystal Structure of Bacteriocin AS-48 at pH 7.5, phosphate bound. Crystal form I== | |||
<StructureSection load='1o83' size='340' side='right'caption='[[1o83]], [[Resolution|resolution]] 1.64Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1o83]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Enterococcus_faecalis Enterococcus faecalis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1O83 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1O83 FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.64Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1o83 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1o83 OCA], [https://pdbe.org/1o83 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1o83 RCSB], [https://www.ebi.ac.uk/pdbsum/1o83 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1o83 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/Q47765_ENTFL Q47765_ENTFL] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
== | |||
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. | 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. | ||
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<ref>PMID:14623193</ref> | |||
== | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
</div> | |||
<div class="pdbe-citations 1o83" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Enterococcus faecalis]] | [[Category: Enterococcus faecalis]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Albert | [[Category: Albert A]] | ||
[[Category: Cruz | [[Category: Cruz V]] | ||
[[Category: Galvez | [[Category: Galvez A]] | ||
[[Category: Maqueda | [[Category: Maqueda M]] | ||
[[Category: Martinez-Ripoll | [[Category: Martinez-Ripoll M]] | ||
[[Category: Sanchez-Barrena | [[Category: Sanchez-Barrena MJ]] | ||
[[Category: Valdivia | [[Category: Valdivia E]] | ||
Latest revision as of 08:58, 9 May 2024
Crystal Structure of Bacteriocin AS-48 at pH 7.5, phosphate bound. Crystal form I
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