title: Structure of Escherichia coli AdhP (ethanol-inducible dehydrogenase) with bound NAD.
abstract: The crystal structure of AdhP, a recombinantly expressed alcohol dehydrogenase from Escherichia coli K-12 (substrain MG1655), was determined to 2.01 Å resolution. The structure, which was solved using molecular replacement, also included the structural and catalytic zinc ions and the cofactor nicotinamide adenine dinucleotide (NAD). The crystals belonged to space group P21, with unit-cell parameters a = 68.18, b = 118.92, c = 97.87 Å, β = 106.41°. The final R factor and Rfree were 0.138 and 0.184, respectively. The structure of the active site of AdhP suggested a number of residues that may participate in a proton relay, and the overall structure of AdhP, including the coordination to structural and active-site zinc ions, is similar to those of other tetrameric alcohol dehydrogenase enzymes.
authors.affiliation: Department of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson Parkway, Norman, OK 73019-5251, USA.
authors.forename: Leonard M
authors.initials: LM
authors.lastname: Thomas
authors.forename: Angelica R
authors.initials: AR
authors.lastname: Harper
authors.forename: Whitney A
authors.initials: WA
authors.lastname: Miner
authors.forename: Helen O
authors.initials: HO
authors.lastname: Ajufo
authors.forename: Katie M
authors.initials: KM
authors.lastname: Branscum
authors.forename: Lydia
authors.initials: L
authors.lastname: Kao
authors.forename: Paul A
authors.initials: PA
authors.lastname: Sims
mesh_terms: D000426:Alcohol Dehydrogenase / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism*; D000595:Amino Acid Sequence; D001665:Binding Sites; D002384:Catalysis; D020134:Catalytic Domain; D003460:Crystallization; D018360:Crystallography, X-Ray; D004926:Escherichia coli / Q000201:enzymology*; D000431:Ethanol / Q000494:pharmacology; D008958:Models, Molecular; D008969:Molecular Sequence Data; D009243:NAD / Q000378:metabolism*; D011487:Protein Conformation; D011522:Protons; D017386:Sequence Homology, Amino Acid; D015032:Zinc / Q000737:chemistry / Q000378:metabolism
chemical_list: D011522:Protons; D009243:NAD; D000431:Ethanol; D000426:Alcohol Dehydrogenase; D015032:Zinc
keywords: AdhP; Escherichia coli; alcohol dehydrogenases