1wnb | pdb_00001wnb

Escherichia coli YdcW gene product is a medium-chain aldehyde dehydrogenase (complexed with nadh and betaine aldehyde)

spinqualitylabelsall models 1wnb, resolution 2.20Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1wnb is a 4 chain structure with sequence from Ecoli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: BTL, NAI Related: 1wnd Activity: Betaine-aldehyde dehydrogenase, with EC number 1.2.1.8 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum Function [ABDH_ECOLI] Catalyzes the oxidation of 1-pyrroline, which is spontaneously formed from 4-aminobutanal, leading to 4-aminobutanoate (GABA). Can also oxidize n-alkyl medium-chain aldehydes, but with a lower catalytic efficiency. 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 PubMed In the context of a medium-scaled structural genomics program aiming at solving the structures of as many as possible bacterial unknown open reading frame products from Escherichia coli (Y prefix), we have solved the structure of YdcW at 2.1A resolution, using molecular replacement. According to its sequence identity, YdcW has been classified into the betaine aldehyde dehydrogenases family (EC 1.2.1.8), catalysing the oxidation of betaine aldehyde into glycine betaine. The structure of YdcW resembles that of other aldehyde dehydrogenases: it is tetrameric and binds a NADH molecule in each monomer. The NADH molecules, bound in the active site by soaking, are revealed to be in the "hydrolysis position". Activities experiments demonstrate that YdcW is more active on medium-chains aldehyde than on betaine aldehyde. However, soaking of betaine into YdcW crystals revealed its presence in one of the subunits, in two positions, a putative resting position and a hydride transfer ready position. Analysis of kinetics data and of the active site shape suggest an optimum binding of n-alkyl aldehydes up to seven to eight carbon atoms, possibly followed by a bulky cyclic or aromatic group. Crystal structure and kinetics identify Escherichia coli YdcW gene product as a medium-chain aldehyde dehydrogenase.,Gruez A, Roig-Zamboni V, Grisel S, Salomoni A, Valencia C, Campanacci V, Tegoni M, Cambillau C J Mol Biol. 2004 Oct 8;343(1):29-41. PMID:15381418 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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