5i2a | pdb_00005i2a

1,2-propanediol Dehydration in Roseburia inulinivorans; Structural Basis for Substrate and Enantiomer Selectivity

spinqualitylabelsall models 5i2a, resolution 2.10Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5i2a is a 2 chain structure with sequence from Dsm 16841. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: EDO, PEG Related: 5i2g Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed Glycyl radical enzymes (GREs) represent a diverse superfamily of enzymes that utilize a radical mechanism to catalyze difficult, but often essential, chemical reactions. In this work, we present the first biochemical and structural data for a GRE-type diol dehydratase from the organism Roseburia inulinivorans (RiDD). Despite high sequence (48% identity) and structural similarity to the GRE-type glycerol dehydratase from Clostridium butyricum (CbGD), we demonstrate that the RiDD is in fact a diol dehydratase. In addition, the RiDD will utilize both (S)-1,2-propanediol and (R)-1,2-propanediol as a substrate, with an observed preference for the (S) enantiomer. Based on the new structural information we develop and successfully test a hypothesis that explains the functional differences we observe. 1,2-propanediol Dehydration in Roseburia inulinivorans; Structural Basis for Substrate and Enantiomer Selectivity.,LaMattina JW, Keul ND, Reitzer P, Kapoor S, Galzerani F, Koch DJ, Gouvea IE, Lanzilotta WN J Biol Chem. 2016 Jun 1. pii: jbc.M116.721142. PMID:27252380 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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