3ghr

Human aldose reductase in complex with NADP+ and the inhibitor IDD594. Investigation of global effects of radiation damage on protein structure. First stage of radiation damage

spinqualitylabelsall models 3ghr, resolution 1.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3ghr is a 1 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1Å Ligands: CIT, LDT, NDP Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function ALDR_HUMAN Catalyzes the NADPH-dependent reduction of a wide variety of carbonyl-containing compounds to their corresponding alcohols with a broad range of catalytic efficiencies. 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 X-rays interact with biological matter and cause damage. Proteins and other macromolecules are damaged primarily by ionizing X-ray photons and secondarily by reactive radiolytic chemical species. In particular, protein molecules are damaged during X-ray diffraction experiments with protein crystals, which is, in many cases, a serious hindrance to structure solution. The local X-ray-induced structural changes of the protein molecule have been studied using a number of model systems. However, it is still not well understood whether these local chemical changes lead to global structural changes in protein and what the mechanism is. We present experimental evidence at atomic resolution indicating the movement of large parts of the protein globule together with bound water molecules in the early stages of radiation damage to the protein crystal. The data were obtained from a crystal cryocooled to approximately 100 K and diffracting to 1 A. The movement of the protein structural elements occurs simultaneously with the decarboxylation of several glutamate and aspartate residues that mediate contacts between moving protein structural elements and with the rearrangement of the water network. The analysis of the anisotropy of atomic displacement parameters reveals that the observed atomic movements occur at different rates in different unit cells of the crystal. Thus, the examination of the cooperative atomic movement enables us to better understand how radiation-induced local chemical and structural changes of the protein molecule eventually lead to disorder in protein crystals. X-ray-radiation-induced cooperative atomic movements in protein.,Petrova T, Lunin VY, Ginell S, Hazemann I, Lazarski K, Mitschler A, Podjarny A, Joachimiak A J Mol Biol. 2009 Apr 17;387(5):1092-105. Epub 2009 Feb 20. PMID:19233199 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Aldose reductase 3D structures

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