3qi0
From Proteopedia
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| - | [[ | + | ==Structural, thermodynamic and kinetic analysis of the picomolar binding affinity interaction of the beta-lactamase inhibitor protein-II (BLIP-II) with class A beta-lactamases== |
| + | <StructureSection load='3qi0' size='340' side='right' caption='[[3qi0]], [[Resolution|resolution]] 2.80Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[3qi0]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Streptomyces_exfoliatus Streptomyces exfoliatus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3QI0 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3QI0 FirstGlance]. <br> | ||
| + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | ||
| + | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1jtg|1jtg]], [[1jtd|1jtd]], [[3qhy|3qhy]]</td></tr> | ||
| + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">bliB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1905 Streptomyces exfoliatus])</td></tr> | ||
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3qi0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3qi0 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3qi0 RCSB], [http://www.ebi.ac.uk/pdbsum/3qi0 PDBsum]</span></td></tr> | ||
| + | </table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | beta-Lactamases hydrolyze beta-lactam antibiotics to provide drug resistance to bacteria. beta-Lactamase inhibitory protein-II (BLIP-II) is a potent proteinaceous inhibitor that exhibits low picomolar affinity for class A beta-lactamases. This study examines the driving forces for binding between BLIP-II and beta-lactamases using a combination of presteady state kinetics, isothermal titration calorimetry, and x-ray crystallography. The measured dissociation rate constants for BLIP-II and various beta-lactamases ranged from 10(-4) to 10(-7) s(-1) and are comparable with those found in some of the tightest known protein-protein interactions. The crystal structures of BLIP-II alone and in complex with Bacillus anthracis Bla1 beta-lactamase revealed no significant side-chain movement in BLIP-II in the complex versus the monomer. The structural rigidity of BLIP-II minimizes the loss of the entropy upon complex formation and, as indicated by thermodynamics experiments, may be a key determinant of the observed potent inhibition of beta-lactamases. | ||
| - | + | Analysis of the binding forces driving the tight interactions between beta-lactamase inhibitory protein-II (BLIP-II) and class A beta-lactamases.,Brown NG, Chow DC, Sankaran B, Zwart P, Prasad BV, Palzkill T J Biol Chem. 2011 Sep 16;286(37):32723-35. Epub 2011 Jul 20. PMID:21775426<ref>PMID:21775426</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
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==See Also== | ==See Also== | ||
*[[TEM1-beta-Lactamase/beta-lactamase Inhibitor Protein (BLIP)|TEM1-beta-Lactamase/beta-lactamase Inhibitor Protein (BLIP)]] | *[[TEM1-beta-Lactamase/beta-lactamase Inhibitor Protein (BLIP)|TEM1-beta-Lactamase/beta-lactamase Inhibitor Protein (BLIP)]] | ||
| - | + | == References == | |
| - | == | + | <references/> |
| - | < | + | __TOC__ |
| + | </StructureSection> | ||
[[Category: Streptomyces exfoliatus]] | [[Category: Streptomyces exfoliatus]] | ||
| - | [[Category: Brown, N G | + | [[Category: Brown, N G]] |
| - | [[Category: Chow, D C | + | [[Category: Chow, D C]] |
| - | [[Category: Palzkill, T | + | [[Category: Palzkill, T]] |
| - | [[Category: Prasad, B V.V | + | [[Category: Prasad, B V.V]] |
| - | [[Category: Sankaran, B | + | [[Category: Sankaran, B]] |
| - | [[Category: Zwart, P | + | [[Category: Zwart, P]] |
[[Category: Beta-lactamase]] | [[Category: Beta-lactamase]] | ||
[[Category: Beta-propeller]] | [[Category: Beta-propeller]] | ||
Revision as of 13:24, 9 December 2014
Structural, thermodynamic and kinetic analysis of the picomolar binding affinity interaction of the beta-lactamase inhibitor protein-II (BLIP-II) with class A beta-lactamases
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