1dmy

<StructureSection load='1dmy' size='340' side='right' caption='[[1dmy]], [[Resolution|resolution]] 2.45&Aring;' scene=''>

<table><tr><td colspan='2'>[[1dmy]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DMY OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1DMY FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=AZM:5-ACETAMIDO-1,3,4-THIADIAZOLE-2-SULFONAMIDE'>AZM</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>

<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">MCA5C ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 LK3 transgenic mice])</td></tr>

<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Carbonate_dehydratase Carbonate dehydratase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.1 4.2.1.1] </span></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=1dmy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dmy OCA], [http://pdbe.org/1dmy PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1dmy RCSB], [http://www.ebi.ac.uk/pdbsum/1dmy PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1dmy ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/CAH5A_MOUSE CAH5A_MOUSE]] Reversible hydration of carbon dioxide. Low activity.

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== Publication Abstract from PubMed ==

The three-dimensional structure of murine mitochondrial carbonic anhydrase V has been determined and refined at 2.45-A resolution (crystallographic R factor = 0.187). Significant structural differences unique to the active site of carbonic anhydrase V are responsible for differences in the mechanism of catalytic proton transfer as compared with other carbonic anhydrase isozymes. In the prototypical isozyme, carbonic anhydrase II, catalytic proton transfer occurs via the shuttle group His-64; carbonic anhydrase V has Tyr-64, which is not an efficient proton shuttle due in part to the bulky adjacent side chain of Phe-65. Based on analysis of the structure of carbonic anhydrase V, we speculate that Tyr-131 may participate in proton transfer due to its proximity to zinc-bound solvent, its solvent accessibility, and its electrostatic environment in the protein structure. Finally, the design of isozyme-specific inhibitors is discussed in view of the complex between carbonic anhydrase V and acetazolamide, a transition-state analogue. Such inhibitors may be physiologically important in the regulation of blood glucose levels.

 

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== References ==

[[Category: Carbonate dehydratase]]

[[Category: Lk3 transgenic mice]]

[[Category: Boriack-Sjodin, P A]]

[[Category: Christianson, D W]]

[[Category: Proton transfer]]