2h3g

<table><tr><td colspan='2'>[[2h3g]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Bacillus_anthracis_(strain_ames) Bacillus anthracis (strain ames)]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2H3G OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2H3G FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene></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=2h3g FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2h3g OCA], [http://pdbe.org/2h3g PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2h3g RCSB], [http://www.ebi.ac.uk/pdbsum/2h3g PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2h3g ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/COAX_BACC1 COAX_BACC1]] Catalyzes the phosphorylation of pantothenate (Pan), the first step in CoA biosynthesis.

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== Publication Abstract from PubMed ==

Coenzyme A (CoASH) is the major low-molecular weight thiol in Staphylococcus aureus and a number of other bacteria; the crystal structure of the S. aureus coenzyme A-disulfide reductase (CoADR), which maintains the reduced intracellular state of CoASH, has recently been reported [Mallett, T.C., Wallen, J.R., Karplus, P.A., Sakai, H., Tsukihara, T., and Claiborne, A. (2006) Biochemistry 45, 11278-89]. In this report we demonstrate that CoASH is the major thiol in Bacillus anthracis; a bioinformatics analysis indicates that three of the four proteins responsible for the conversion of pantothenate (Pan) to CoASH in Escherichia coli are conserved in B. anthracis. In contrast, a novel type III pantothenate kinase (PanK) catalyzes the first committed step in the biosynthetic pathway in B. anthracis; unlike the E. coli type I PanK, this enzyme is not subject to feedback inhibition by CoASH. The crystal structure of B. anthracis PanK (BaPanK), solved using multiwavelength anomalous dispersion data and refined at a resolution of 2.0 A, demonstrates that BaPanK is a new member of the Acetate and Sugar Kinase/Hsc70/Actin (ASKHA) superfamily. The Pan and ATP substrates have been modeled into the active-site cleft; in addition to providing a clear rationale for the absence of CoASH inhibition, analysis of the Pan-binding pocket has led to the development of two new structure-based motifs (the PAN and INTERFACE motifs). Our analyses also suggest that the type III PanK in the spore-forming B. anthracis plays an essential role in the novel thiol/disulfide redox biology of this category A biodefense pathogen.

Structure of the type III pantothenate kinase from Bacillus anthracis at 2.0 A resolution: implications for coenzyme A-dependent redox biology.,Nicely NI, Parsonage D, Paige C, Newton GL, Fahey RC, Leonardi R, Jackowski S, Mallett TC, Claiborne A Biochemistry. 2007 Mar 20;46(11):3234-45. Epub 2007 Feb 27. PMID:17323930<ref>PMID:17323930</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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*[[Pantothenate kinase|Pantothenate kinase]]

[[Category: Nicely, N I]]

[[Category: Type iii pantothenate kinase]]