2apj

X-Ray Structure of Protein from Arabidopsis Thaliana AT4G34215 at 1.6 Angstrom Resolution

spinqualitylabelsall models 2apj, resolution 1.60Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2apj is a 4 chain structure with sequence from Arabidopsis thaliana. This structure supersedes the now removed PDB entry 2aea. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.6Å Ligands: SEB Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT, TOPSAN Function CAES_ARATH 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 The crystal structure of the At4g34215 protein of Arabidopsis thaliana was determined by molecular replacement and refined to an R factor of 14.6% (R(free) = 18.3%) at 1.6 Angstroms resolution. The crystal structure confirms that At4g34215 belongs to the SGNH-hydrolase superfamily of enzymes. The catalytic triad of the enzyme comprises residues Ser31, His238 and Asp235. In this structure the catalytic serine residue was found to be covalently modified, possibly by phenylmethylsulfonyl fluoride. The structure also reveals a previously undescribed variation within the active site. The conserved asparagine from block III, which provides a hydrogen bond for an oxyanion hole in the SGNH-hydrolase superfamily enzymes, is missing in At4g34215 and is functionally replaced by Gln30 from block I. This residue is positioned in a catalytically competent conformation by nearby residues, including Gln159, Gly160 and Glu161, which are fully conserved in the carbohydrate esterase family 6 enzymes. The structure at 1.6 Angstroms resolution of the protein product of the At4g34215 gene from Arabidopsis thaliana.,Bitto E, Bingman CA, McCoy JG, Allard ST, Wesenberg GE, Phillips GN Jr Acta Crystallogr D Biol Crystallogr. 2005 Dec;61(Pt 12):1655-61. Epub 2005, Nov 19. PMID:16301800 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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