2ayt

The crystal structure of a protein disulfide oxidoreductase from aquifex aeolicus

spinqualitylabelsall models 2ayt, resolution 2.40Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2ayt is a 2 chain structure with sequence from Aquifex aeolicus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.4Å Ligands: GOL, SO4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function O66753_AQUAE 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 A potential role in disulfide bond formation in the intracellular proteins of thermophilic organisms has recently been attributed to a new family of protein disulfide isomerase (PDI)-like proteins. Members of this family are characterized by a molecular mass of about 26kDa and by two Trx folds, each comprising a CXXC active site motif. We report on the functional and structural characterization of a new member of this family, which was isolated from the thermophilic bacterium Aquifex aeolicus (AaPDO). Functional studies have revealed the high catalytic efficiency of this enzyme in reducing, oxidizing and isomerizing disulfide bridges. Site-directed mutagenesis experiments have suggested that its two active sites have similar functional properties, i.e. that each of them imparts partial activity to the enzyme. This similarity was confirmed by the analysis of the enzyme crystal structure, which points to similar geometrical parameters and solvent accessibilities for the two active sites. The results demonstrated that AaPDO is the most PDI-like of all prokaryotic proteins so far known. Thus, further experimental studies on this enzyme are likely to provide important information on the eukaryotic homologue. Insights on a new PDI-like family: structural and functional analysis of a protein disulfide oxidoreductase from the bacterium Aquifex aeolicus.,Pedone E, D'Ambrosio K, De Simone G, Rossi M, Pedone C, Bartolucci S J Mol Biol. 2006 Feb 10;356(1):155-64. Epub 2005 Dec 1. PMID:16364362 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Protein disulfide oxidoreductase 3D structures

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