Ligand tetrahydropteroylhexaglutamate
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Basic Ligand Information
Molecular Structure

C44H58N12O21
tetrahydropteroylhexaglutamate
CSMSDHCIDKPAHS-DUJSLOSMSA-N
5,6,7,8-tetrahydropteroyl-gamma-Glu6, 5,6,7,8-tetrahydropteroyl-Glu6, Tetrahydropteroylhexa-gamma-glutamate
Roles as Enzyme Ligand
In Vivo Product in Enzyme-catalyzed Reactions (1 result)
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10-formyltetrahydropteroylhexaglutamate + NADP+ + H2O = tetrahydropteroylhexaglutamate + CO2 + NADPH
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Substrate in Enzyme-catalyzed Reactions (1 result)
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tetrahydropteroylhexaglutamate + 2-dehydropantoate = 5,10-methylenetetrahydropteroylhexaglutamate + 3-methyl-2-oxobutanoate + H2O
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Product in Enzyme-catalyzed Reactions (3 results)
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10-formyltetrahydropteroylhexaglutamate + NADP+ + H2O = tetrahydropteroylhexaglutamate + CO2 + NADPH
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ATP + 5,6,7,8-tetrahydropteroyl-Glu5 + L-glutamate = ADP + phosphate + 5,6,7,8-tetrahydropteroyl-gamma-Glu6
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ATP + 5,6,7,8-tetrahydropteroyl-Glu5 + L-glutamate = ADP + phosphate + 5,6,7,8-tetrahydropteroyl-Glu6
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Inhibitor in Enzyme-catalyzed Reactions (1 result)
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1 mol per mol of tetrameric protein, potent product inhibitor: 0.0003 mM, 90% inhibition
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Enzyme Kinetic Parameters
KM Value (1 result)
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References & Links
Literature References (3)
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Identification of 10-formyltetrahydrofolate dehydrogenase-hydrolase as a major folate binding protein in liver cytosol
1988
Min, H.; Shane, B.; Stokstad, E.L.R.
Biochim. Biophys. Acta
967
348-353
10-Formyltetrahydrofolate dehydrogenase: Identification of the natural folate ligand, covalent labeling, and partial tryptic digestion
1995
Wagner, C.; Briggs, W.T.; Horne, D.H.; Cook, R.J.
Arch. Biochem. Biophys.
316
141-147
Ketopantoate hydroxymethyltransferase. II. Physical, catalytic, and regulatory properties
1976
Powers, S.G.; Snell, E.E.
J. Biol. Chem.
251
3786-3793
Links to other databases for tetrahydropteroylhexaglutamate