2c1h
The X-ray Structure of Chlorobium vibrioforme 5-Aminolaevulinic Acid Dehydratase Complexed with a Diacid InhibitorThe X-ray Structure of Chlorobium vibrioforme 5-Aminolaevulinic Acid Dehydratase Complexed with a Diacid Inhibitor
Structural highlights
FunctionHEM2_CHLP8 Catalyzes an early step in the biosynthesis of tetrapyrroles. Binds two molecules of 5-aminolevulinate per subunit, each at a distinct site, and catalyzes their condensation to form porphobilinogen. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe structure of Chlorobium vibrioforme 5-aminolaevulinic acid dehydratase (ALAD) complexed with the irreversible inhibitor 4,7-dioxosebacic acid has been solved. The inhibitor binds by forming Schiff-base linkages with lysines 200 and 253 at the active site. The structure reported here provides a definition of the interactions made by both of the substrate molecules (A-side and P-side substrates) with the C. vibrioforme ALAD and is compared and contrasted with structures of the same inhibitor bound to Escherichia coli and yeast ALAD. The structure suggests why 4,7-dioxosebacic acid is a better inhibitor of the zinc-dependent ALADs than of the zinc-independent ALADs. Structure of Chlorobium vibrioforme 5-aminolaevulinic acid dehydratase complexed with a diacid inhibitor.,Coates L, Beaven G, Erskine PT, Beale SI, Wood SP, Shoolingin-Jordan PM, Cooper JB Acta Crystallogr D Biol Crystallogr. 2005 Dec;61(Pt 12):1594-8. Epub 2005, Nov 19. PMID:16304458[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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