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<StructureSection load='3qhy' size='340' side='right'caption='[[3qhy]], [[Resolution|resolution]] 2.06&Aring;' scene=''>
<StructureSection load='3qhy' size='340' side='right'caption='[[3qhy]], [[Resolution|resolution]] 2.06&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3qhy]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/"actinomyces_exfoliatus"_waksman_and_curtis_1916 "actinomyces exfoliatus" waksman and curtis 1916] and [https://en.wikipedia.org/wiki/"bacillus_cereus_var._anthracis"_(cohn_1872)_smith_et_al._1946 "bacillus cereus var. anthracis" (cohn 1872) smith et al. 1946]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3QHY OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3QHY FirstGlance]. <br>
<table><tr><td colspan='2'>[[3qhy]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_anthracis Bacillus anthracis] and [https://en.wikipedia.org/wiki/Streptomyces_exfoliatus Streptomyces exfoliatus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3QHY OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3QHY FirstGlance]. <br>
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1jtd|1jtd]], [[1jtg|1jtg]], [[3qi0|3qi0]]</div></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.06&#8491;</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">bla1, BA_2507, GBAA2507, GBAA_2507 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1392 "Bacillus cereus var. anthracis" (Cohn 1872) Smith et al. 1946]), bliB ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1905 "Actinomyces exfoliatus" Waksman and Curtis 1916])</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Beta-lactamase Beta-lactamase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.5.2.6 3.5.2.6] </span></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=3qhy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3qhy OCA], [https://pdbe.org/3qhy PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3qhy RCSB], [https://www.ebi.ac.uk/pdbsum/3qhy PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3qhy ProSAT]</span></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=3qhy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3qhy OCA], [https://pdbe.org/3qhy PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3qhy RCSB], [https://www.ebi.ac.uk/pdbsum/3qhy PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3qhy ProSAT]</span></td></tr>
</table>
</table>
<div style="background-color:#fffaf0;">
== Function ==
== Publication Abstract from PubMed ==
[https://www.uniprot.org/uniprot/Q93T42_BACAN Q93T42_BACAN]
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&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3qhy" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Beta-lactamase 3D structures|Beta-lactamase 3D structures]]
*[[Beta-lactamase 3D structures|Beta-lactamase 3D structures]]
*[[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__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Actinomyces exfoliatus waksman and curtis 1916]]
[[Category: Bacillus anthracis]]
[[Category: Beta-lactamase]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Structural genomic]]
[[Category: Streptomyces exfoliatus]]
[[Category: Brown, N G]]
[[Category: Brown NG]]
[[Category: Chow, D C]]
[[Category: Chow DC]]
[[Category: Palzkill, T]]
[[Category: Palzkill T]]
[[Category: Prasad, B V.V]]
[[Category: Prasad BVV]]
[[Category: Sankaran, B]]
[[Category: Sankaran B]]
[[Category: Zwart, P]]
[[Category: Zwart P]]
[[Category: Beta-propeller]]
[[Category: Enyzme-inhibitor complex]]
[[Category: Hydrolase-hydrolase inhibitor complex]]
[[Category: Protein:protein interaction]]
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