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Results 1 - 6 of 6
EC Number General Information Commentary Reference
Show all pathways known for 1.1.1.87Display the word mapDisplay the reaction diagram Show all sequences 1.1.1.87evolution the enzyme is a member of the family of pyridine dinucleotide-dependent beta-hydroxyacid oxidative decarboxylating dehydrogenases, specifically the family that has (R)-beta-hydroxyacid substrates, including isocitrate dehydrogenase (ICDH) among others. Superposition of available structures of the malic enzyme, isopropylmalate dehydrogenase, IcDH, and HIcDH show a similar overall geometry of residues in the substrate and metal ion binding sites. A Lys (general base)-Tyr (general acid) pair is conserved among these enzymes. The similar structural geometry in the active site suggests a similar general chemical mechanism. Three aspartate residues are conserved in the active sites of all HIcDHs sequenced to data, and are also conserved across the family of pyridine nucleotide-dependent oxidative decarboxylases including malic enzyme 739958
Show all pathways known for 1.1.1.87Display the word mapDisplay the reaction diagram Show all sequences 1.1.1.87metabolism homoisocitrate dehydrogenase catalyzes the fourth step of the alpha-aminadipate pathway, the NAD+-dependent conversion of homoisocitrate to alpha-ketoadipate 739958
Show all pathways known for 1.1.1.87Display the word mapDisplay the reaction diagram Show all sequences 1.1.1.87metabolism homoisocitrate dehydrogenase is involved in the alpha-aminoadipate pathway of lysine biosynthesis 722569
Show all pathways known for 1.1.1.87Display the word mapDisplay the reaction diagram Show all sequences 1.1.1.87metabolism the enzyme is involved in lysine biosynthesis -, 760522
Show all pathways known for 1.1.1.87Display the word mapDisplay the reaction diagram Show all sequences 1.1.1.87more a conformational change to close the active site and organize the active site for catalysis contributes to rate limitation of the overall reaction of the Saccharomyces cerevisiae enzyme HIcDH. Residues K206 and Y150 of ScHIcDH are a Lys-Tyr pair in the active site acting as the general base and general acid in the reaction. A slow conformational change is required to close the site upon the binding of MgHIc prior to catalysis. With the slow substrate isocitrate, hydride transfer and decarboxylation steps contribute to rate limitation, and the decarboxylation step is the slower of the two 739958
Show all pathways known for 1.1.1.87Display the word mapDisplay the reaction diagram Show all sequences 1.1.1.87more three-dimensional structure and homology modeling, overview -, 722303
Results 1 - 6 of 6