2agt | pdb_00002agt

Aldose Reductase Mutant Leu 300 Pro complexed with Fidarestat

spinqualitylabelsall models 2agt, resolution 1.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2agt 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. Ligands: CIT, CL, FID, NAP Related: 1pwm Gene: AKR1B1, ALDR1 (Homo sapiens) Activity: Aldehyde reductase, with EC number 1.1.1.21 Resources: FirstGlance, OCA, RCSB, PDBsum 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 Structure of the Leu300Pro mutant of human aldose reductase (ALR2) in complex with the inhibitor fidarestat is determined. Comparison with the hALR2-fidarestat complex and the porcine aldehyde reductase (ALR1)-fidarestat complex indicates that the hydrogen bond between the Leu300 amino group of the wild-type and the exocyclic amide group of the inhibitor is the key determinant for the specificity of fidarestat for ALR2 over ALR1. Thermodynamic data also suggest an enthalpic contribution as the predominant difference in the binding energy between the aldose reductase mutant and the wild-type. An additional selectivity-determining feature is the difference in the interaction between the inhibitor and the side chain of Trp219, ordered in the present structure but disordered (corresponding Trp220) in the ALR1-fidarestat complex. Thus, the hydrogen bond ( approximately 7 kJ/mol) corresponds to a 23-fold difference in inhibitor potency while the differences in the interactions between Trp219(ALR2) and fidarestat and between Trp220(ALR1) and fidarestat can account for an additional 10-fold difference in potency. Factorizing selectivity determinants of inhibitor binding toward aldose and aldehyde reductases: structural and thermodynamic properties of the aldose reductase mutant Leu300Pro-fidarestat complex.,Petrova T, Steuber H, Hazemann I, Cousido-Siah A, Mitschler A, Chung R, Oka M, Klebe G, El-Kabbani O, Joachimiak A, Podjarny A J Med Chem. 2005 Sep 8;48(18):5659-65. PMID:16134934 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Aldose Reductase

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