1thg

1.8 ANGSTROMS REFINED STRUCTURE OF THE LIPASE FROM GEOTRICHUM CANDIDUM

spinqualitylabelsall models 1thg, resolution 1.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1thg is a 1 chain structure with sequence from endomyces_geotrichum Atcc 22600 endomyces geotrichum. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: NAG, NDG NonStd Res: PCA Gene: LIP2 (ATCC 22600 Endomyces geotrichum) Activity: Triacylglycerol lipase, with EC number 3.1.1.3 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [LIP2_GEOCN] Hydrolyzes all ester bonds in triglyceride and displays a high affinity for triolein. For unsaturated substrates having long fatty acyl chains (C18:2 cis-9, cis-12 and C18:3 cis-9, cis-12, cis-15) GCL I shows higher specific activity than GCL II, whereas GCL II shows higher specific activity against saturated substrates having short fatty acid chains (C8, C10, C12 and C14). 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 lipase from the fungus Geotrichum candidum is one of only three interfacially activated lipases whose structures have been reported to date. We have previously reported the partially refined 2.2 A structure of this enzyme. We have subsequently extended the resolution and here report the fully refined 1.8 A structure of this lipase. The structure observed in the crystal is apparently not the lipolytic conformation, as the active site is not accessible from the surface of the molecule. A single large cavity is found in the interior of the molecule and extends from the catalytic Ser to two surface helices, suggesting that this face may be the region that interacts with the lipid interface. The mobility of local segments on this face is indicated by temperature factors larger than elsewhere in the molecule and by the observation of several residues whose side-chains are discretely disordered. These observations strongly suggest that this portion of the molecule is involved in interfacial and substrate binding, but the exact nature of the conformational changes induced by binding to the lipid interface can not be determined. 1.8 A refined structure of the lipase from Geotrichum candidum.,Schrag JD, Cygler M J Mol Biol. 1993 Mar 20;230(2):575-91. PMID:8464065 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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