Enzymes
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Reaction participants Show >> << Hide
- Name help_outline 6-lactoyl-5,6,7,8-tetrahydropterin Identifier CHEBI:136565 Charge 0 Formula C9H13N5O3 InChIKeyhelp_outline HKCYZTKHPLJZDR-SRBOSORUSA-N SMILEShelp_outline C12=C(N[C@@](C(C(C)O)=O)(CN1)[H])C(NC(=N2)N)=O 2D coordinates Mol file for the small molecule Search links Involved in 2 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline NADP+ Identifier CHEBI:58349 Charge -3 Formula C21H25N7O17P3 InChIKeyhelp_outline XJLXINKUBYWONI-NNYOXOHSSA-K SMILEShelp_outline NC(=O)c1ccc[n+](c1)[C@@H]1O[C@H](COP([O-])(=O)OP([O-])(=O)OC[C@H]2O[C@H]([C@H](OP([O-])([O-])=O)[C@@H]2O)n2cnc3c(N)ncnc23)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 1,253 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline 6-pyruvoyl-5,6,7,8-tetrahydropterin Identifier CHEBI:136564 Charge 0 Formula C9H11N5O3 InChIKeyhelp_outline WBJZXBUVECZHCE-SCSAIBSYSA-N SMILEShelp_outline C12=C(N[C@@](C(C(C)=O)=O)(CN1)[H])C(NC(=N2)N)=O 2D coordinates Mol file for the small molecule Search links Involved in 6 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H+ Identifier CHEBI:15378 Charge 1 Formula H InChIKeyhelp_outline GPRLSGONYQIRFK-UHFFFAOYSA-N SMILEShelp_outline [H+] 2D coordinates Mol file for the small molecule Search links Involved in 9,176 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline NADPH Identifier CHEBI:57783 (Beilstein: 10411862) help_outline Charge -4 Formula C21H26N7O17P3 InChIKeyhelp_outline ACFIXJIJDZMPPO-NNYOXOHSSA-J SMILEShelp_outline NC(=O)C1=CN(C=CC1)[C@@H]1O[C@H](COP([O-])(=O)OP([O-])(=O)OC[C@H]2O[C@H]([C@H](OP([O-])([O-])=O)[C@@H]2O)n2cnc3c(N)ncnc23)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 1,247 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:11772 | RHEA:11773 | RHEA:11774 | RHEA:11775 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Publications
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Biosynthesis of tetrahydrobiopterin: conversion of dihydroneopterin triphosphate to tetrahydropterin intermediates.
Milstien S., Kaufman S.
It is known that the first step in the de novo synthesis of tetrahydrobiopterin from GTP is the conversion of GTP to dihydroneopterin triphosphate. Recent evidence supports the conclusion that beyond this first step, the pterin intermediates in the pathway are all at the tetrahydro level of reduct ... >> More
It is known that the first step in the de novo synthesis of tetrahydrobiopterin from GTP is the conversion of GTP to dihydroneopterin triphosphate. Recent evidence supports the conclusion that beyond this first step, the pterin intermediates in the pathway are all at the tetrahydro level of reduction. We have now shown that partially purified fractions from rat liver, rat brain and bovine adrenal medulla catalyze the conversion of dihydroneopterin triphosphate to tetrahydrobiopterin, as well as to the putative intermediates in the pathway, 6-pyruvoyl-tetrahydropterin and 6-lactoyl-tetrahydropterin. Results of both enzymatic and chemical studies support the assigned structures for the latter two tetrahydropterins. We have also purified extensively from brain an enzyme, distinct from sepiapterin reductase, that catalyzes the TPNH-dependent reduction of 6-pyruvoyl-tetrahydropterin to 6-lactoyl-tetrahydropterin. The role of this reductase in tetrahydrobiopterin synthesis has not yet been established. << Less
Biochem Biophys Res Commun 128:1099-1107(1985) [PubMed] [EuropePMC]
Comments
RHEA:11772 part of RHEA:32627