1ghk

SOLUTION STRUCTURE OF THE LIPOYL DOMAIN OF THE 2-OXOGLUTARATE DEHYDROGENASE COMPLEX FROM AZOTOBACTER VINELAND II, NMR, 25 STRUCTURES

spinqualitylabelsall models 1ghk, 25 NMR models Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1ghk is a 1 chain structure with sequence from Atcc 478. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Related: 1ghj Activity: Dihydrolipoyllysine-residue succinyltransferase, with EC number 2.3.1.61 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [ODO2_AZOVI] The 2-oxoglutarate dehydrogenase complex catalyzes the overall conversion of 2-oxoglutarate to succinyl-CoA and CO(2). It contains multiple copies of 3 enzymatic components: 2-oxoglutarate dehydrogenase (E1), dihydrolipoamide succinyltransferase (E2) and lipoamide dehydrogenase (E3). 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 three-dimensional solution structure of the lipoyl domain of the 2-oxoglutarate dehydrogenase complex from Azotobacter vinelandii has been determined from nuclear magnetic resonance data by using distance geometry and dynamical simulated annealing refinement. The structure determination is based on a total of 580 experimentally derived distance constraints and 65 dihedral angle constraints. The solution structure is represented by an ensemble of 25 structures with an average root-mean-square deviation between the individual structures of the ensemble and the mean coordinates of 0.71 A for backbone atoms and 1.08 A for all heavy atoms. The overall fold of the lipoyl domain is that of a beta-barrel-sandwich hybrid. It consists of two almost parallel four-stranded anti-parallel beta-sheets formed around a well-defined hydrophobic core, with a central position of the single tryptophan 21. The lipoylation site, lysine 42, is found in a beta-turn at the far end of one of the sheets, and is close in space to a solvent-exposed loop comprising residues 7 to 15. The lipoyl domain displays a remarkable internal symmetry that projects one beta-sheet onto the other beta-sheet after rotation of approximately 180 degrees about a 2-fold rotational symmetry axis. There is close structural similarity between the structure of this 2-oxoglutarate dehydrogenase complex lipoyl domain and the structures of the lipoyl domains of pyruvate dehydrogenase complexes from Bacillus stearothermophilus and Escherichia coli, and conformational differences occur primarily in a solvent-exposed loop close in space to the lipoylation site. The lipoyl domain structure is discussed in relation to the process of molecular recognition of lipoyl domains by their parent 2-oxo acid dehydrogenase. Solution structure of the lipoyl domain of the 2-oxoglutarate dehydrogenase complex from Azotobacter vinelandii.,Berg A, Vervoort J, de Kok A J Mol Biol. 1996 Aug 23;261(3):432-42. PMID:8780784 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also 2-oxoglutarate dehydrogenase 3D structures

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