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2 biopterin + 3 NADPH + 3 H+
dihydrobiopterin + tetrahydrobiopterin + 3 NADP+
6-biopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
7,8-dihydrofolate + NADPH + H+
5,6,7,8-tetrahydrofolate + NADP+
7,8-dihydromonapterin + NADPH + H+
5,6,7,8-tetrahydromonapterin + NADP+
7,8-dihydroneopterin + NADPH + H+
5,6,7,8-tetrahydroneopterin + NADP+
biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
Biopterin + NADPH
5,6,7,8-Tetrahydrobiopterin + NADP+
biopterin + NADPH + H+
7,8-dihydrobiopterin + NADP+
biopterin + NADPH + H+
dihydrobiopterin + NADP+
dihydrobiopterin + NADPH
5,6,7,8-tetrahydrobiopterin + NADP+
Dihydrobiopterin + NADPH
?
dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Dihydrofolate + NADPH
5,6,7,8-Tetrahydrofolate + NADP+
Dihydroneopterin + NADPH
?
dihydrosepiapterin + NADPH
?
folate + NADPH
5,6,7,8-tetrahydrofolate + NADP+
folate + NADPH + H+
7,8-dihydrofolate + NADP+
folate + NADPH + H+
7,8-dihydrofolate + tetrahydrofolate + NADP+
quinonoid 6,7-dimethyl-7,8-dihydropterin + NADPH + H+
?
quinonoid dihydrobiopterin + NADPH + H+
tetrahydrobiopterin + NADP+
additional information
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-
2 biopterin + 3 NADPH + 3 H+
dihydrobiopterin + tetrahydrobiopterin + 3 NADP+
Substrates: essential enzyme of pterin and folate metabolism
Products: -
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2 biopterin + 3 NADPH + 3 H+
dihydrobiopterin + tetrahydrobiopterin + 3 NADP+
-
Substrates: salvage of pterins, enzyme acts as a metabolic bypass for drugs targeting dihydrofolate reductase, PTR1 contributes about 10% of the reduction of folates in wild-type cells while the remaining 90% is due to the activity of dihydrofolate reductase-thymidylate synthase (EC 1.5.1.3)
Products: -
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6-biopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
?
6-biopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
?
7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
?
7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: best substrate
Products: -
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7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
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7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: best substrate
Products: -
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7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
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7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: best substrate
Products: -
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7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: best substrate
Products: -
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7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: best substrate
Products: -
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7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
?
7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
?
7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
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7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
-
Substrates: -
Products: -
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7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: best substrate
Products: -
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7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: low activity
Products: -
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7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: best substrate
Products: -
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7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
?
7,8-dihydrofolate + NADPH + H+
5,6,7,8-tetrahydrofolate + NADP+
Substrates: low activity
Products: -
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7,8-dihydrofolate + NADPH + H+
5,6,7,8-tetrahydrofolate + NADP+
Substrates: -
Products: -
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7,8-dihydrofolate + NADPH + H+
5,6,7,8-tetrahydrofolate + NADP+
Substrates: -
Products: -
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7,8-dihydromonapterin + NADPH + H+
5,6,7,8-tetrahydromonapterin + NADP+
Substrates: cf. EC 1.5.1.50, moderate activity
Products: -
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7,8-dihydromonapterin + NADPH + H+
5,6,7,8-tetrahydromonapterin + NADP+
Substrates: cf. EC 1.5.1.50, moderate activity
Products: -
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7,8-dihydromonapterin + NADPH + H+
5,6,7,8-tetrahydromonapterin + NADP+
Substrates: cf. EC 1.5.1.50, moderate activity
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7,8-dihydroneopterin + NADPH + H+
5,6,7,8-tetrahydroneopterin + NADP+
Substrates: stereoisomer of biopterin, moderate activity
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7,8-dihydroneopterin + NADPH + H+
5,6,7,8-tetrahydroneopterin + NADP+
Substrates: stereoisomer of biopterin, moderate activity
Products: -
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7,8-dihydroneopterin + NADPH + H+
5,6,7,8-tetrahydroneopterin + NADP+
Substrates: stereoisomer of biopterin, moderate activity
Products: -
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biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
Substrates: -
Products: -
?
biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
Substrates: -
Products: -
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biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
-
Substrates: -
Products: -
?
biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
Substrates: -
Products: -
?
biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
Substrates: -
Products: -
?
biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
Substrates: -
Products: -
?
biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
-
Substrates: -
Products: -
?
biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
Substrates: -
Products: -
?
biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
-
Substrates: -
Products: -
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biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
Substrates: -
Products: -
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biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
-
Substrates: substrate binding structure
Products: -
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Biopterin + NADPH
5,6,7,8-Tetrahydrobiopterin + NADP+
-
Substrates: -
Products: -
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Biopterin + NADPH
5,6,7,8-Tetrahydrobiopterin + NADP+
-
Substrates: activity with NADH is less than 5% of the activity with NADPH
Products: -
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Biopterin + NADPH
5,6,7,8-Tetrahydrobiopterin + NADP+
-
Substrates: -
Products: -
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Biopterin + NADPH
5,6,7,8-Tetrahydrobiopterin + NADP+
Substrates: 2-step reaction via intermediate 7,8-dihydrobiopterin
Products: -
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Biopterin + NADPH
5,6,7,8-Tetrahydrobiopterin + NADP+
-
Substrates: -
Products: -
?
Biopterin + NADPH
5,6,7,8-Tetrahydrobiopterin + NADP+
-
Substrates: no activity with NADH and NADP+
Products: -
?
Biopterin + NADPH
5,6,7,8-Tetrahydrobiopterin + NADP+
-
Substrates: no activity with NADH and NADP+
Products: -
?
biopterin + NADPH + H+
7,8-dihydrobiopterin + NADP+
Substrates: -
Products: -
?
biopterin + NADPH + H+
7,8-dihydrobiopterin + NADP+
Substrates: best substrate
Products: -
?
biopterin + NADPH + H+
7,8-dihydrobiopterin + NADP+
Substrates: -
Products: -
?
biopterin + NADPH + H+
dihydrobiopterin + NADP+
-
Substrates: -
Products: -
?
biopterin + NADPH + H+
dihydrobiopterin + NADP+
Substrates: -
Products: -
?
biopterin + NADPH + H+
dihydrobiopterin + NADP+
-
Substrates: -
Products: -
?
biopterin + NADPH + H+
dihydrobiopterin + NADP+
Substrates: -
Products: -
?
dihydrobiopterin + NADPH
5,6,7,8-tetrahydrobiopterin + NADP+
-
Substrates: -
Products: -
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dihydrobiopterin + NADPH
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
r
Dihydrobiopterin + NADPH
?
-
Substrates: -
Products: -
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Dihydrobiopterin + NADPH
?
-
Substrates: -
Products: -
?
Dihydrobiopterin + NADPH
?
-
Substrates: -
Products: -
?
Dihydrobiopterin + NADPH
?
-
Substrates: -
Products: -
?
dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
-
Substrates: -
Products: -
?
dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
?
dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
-
Substrates: -
Products: -
?
dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
?
Dihydrofolate + NADPH
5,6,7,8-Tetrahydrofolate + NADP+
-
Substrates: -
Products: -
?
Dihydrofolate + NADPH
5,6,7,8-Tetrahydrofolate + NADP+
-
Substrates: -
Products: -
?
Dihydrofolate + NADPH
5,6,7,8-Tetrahydrofolate + NADP+
-
Substrates: -
Products: -
?
Dihydrofolate + NADPH
5,6,7,8-Tetrahydrofolate + NADP+
-
Substrates: -
Products: -
?
Dihydrofolate + NADPH
5,6,7,8-Tetrahydrofolate + NADP+
-
Substrates: -
Products: -
?
Dihydroneopterin + NADPH
?
-
Substrates: -
Products: -
?
Dihydroneopterin + NADPH
?
-
Substrates: -
Products: -
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Dihydroneopterin + NADPH
?
-
Substrates: no activity
Products: -
?
dihydrosepiapterin + NADPH
?
-
Substrates: -
Products: -
?
dihydrosepiapterin + NADPH
?
-
Substrates: -
Products: -
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dihydrosepiapterin + NADPH
?
-
Substrates: no activity
Products: -
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folate + NADPH
5,6,7,8-tetrahydrofolate + NADP+
-
Substrates: -
Products: -
?
folate + NADPH
5,6,7,8-tetrahydrofolate + NADP+
-
Substrates: -
Products: -
?
folate + NADPH
5,6,7,8-tetrahydrofolate + NADP+
-
Substrates: -
Products: -
?
folate + NADPH
5,6,7,8-tetrahydrofolate + NADP+
-
Substrates: -
Products: -
?
folate + NADPH
5,6,7,8-tetrahydrofolate + NADP+
-
Substrates: -
Products: -
?
folate + NADPH + H+
7,8-dihydrofolate + NADP+
Substrates: high activity, see also EC 1.5.1.3
Products: -
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folate + NADPH + H+
7,8-dihydrofolate + NADP+
Substrates: reaction of EC 1.5.1.3
Products: -
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folate + NADPH + H+
7,8-dihydrofolate + NADP+
Substrates: -
Products: -
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folate + NADPH + H+
7,8-dihydrofolate + tetrahydrofolate + NADP+
-
Substrates: -
Products: -
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folate + NADPH + H+
7,8-dihydrofolate + tetrahydrofolate + NADP+
Substrates: essential enzyme of pterin and folate metabolism
Products: -
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quinonoid 6,7-dimethyl-7,8-dihydropterin + NADPH + H+
?
-
Substrates: -
Products: -
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quinonoid 6,7-dimethyl-7,8-dihydropterin + NADPH + H+
?
-
Substrates: -
Products: -
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quinonoid dihydrobiopterin + NADPH + H+
tetrahydrobiopterin + NADP+
-
Substrates: -
Products: -
?
quinonoid dihydrobiopterin + NADPH + H+
tetrahydrobiopterin + NADP+
-
Substrates: -
Products: -
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additional information
?
-
Substrates: enzyme PruA does not exhibit pteridine reductase activity with 7,8-dihydrofolate or fully oxidized pterins. PruA exhibits maximal catalytic efficiency with H2BPt, while both H2MPt and 7,8-dihydroneopterin (H2NPt) also serve as competent substrates. Substrate specificity, overview. No activity with 7,8-dihydrofolate, biopterin, and folate
Products: -
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additional information
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Substrates: enzyme PruA does not exhibit pteridine reductase activity with 7,8-dihydrofolate or fully oxidized pterins. PruA exhibits maximal catalytic efficiency with H2BPt, while both H2MPt and 7,8-dihydroneopterin (H2NPt) also serve as competent substrates. Substrate specificity, overview. No activity with 7,8-dihydrofolate, biopterin, and folate
Products: -
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additional information
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Substrates: enzyme PruA does not exhibit pteridine reductase activity with 7,8-dihydrofolate or fully oxidized pterins. PruA exhibits maximal catalytic efficiency with H2BPt, while both H2MPt and 7,8-dihydroneopterin (H2NPt) also serve as competent substrates. Substrate specificity, overview. No activity with 7,8-dihydrofolate, biopterin, and folate
Products: -
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additional information
?
-
Substrates: enzyme is associated with folate metabolism, responsible for salvage of pterins and reduction of folates
Products: -
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additional information
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-
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Substrates: enzyme is associated with folate metabolism, responsible for salvage of pterins and reduction of folates
Products: -
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additional information
?
-
Substrates: NADPH binds first, the enzyme-NADPH complex binds the substrate
Products: -
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additional information
?
-
-
Substrates: NADPH binds first, the enzyme-NADPH complex binds the substrate
Products: -
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additional information
?
-
Substrates: substrate specificity, overview
Products: -
-
additional information
?
-
-
Substrates: no activity with quinoid dihydrobiopterin
Products: -
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additional information
?
-
-
Substrates: primary enzyme mediating pteridine salvage
Products: -
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additional information
?
-
-
Substrates: the enzyme mediates the synthesis of tetrahydropteridines
Products: -
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additional information
?
-
Substrates: essential for the salvage of pterins
Products: -
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additional information
?
-
-
Substrates: essential for the salvage of pterins
Products: -
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additional information
?
-
-
Substrates: thermal shift enzyme assay optimization
Products: -
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additional information
?
-
Substrates: enzyme PTR1 synthesizes the formation of tetrahydrobiopterin from biopterin via dihydrobiopterin or from the quinoide form dihydrobiopterin, pathway overview
Products: -
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additional information
?
-
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Substrates: enzyme PTR1 synthesizes the formation of tetrahydrobiopterin from biopterin via dihydrobiopterin or from the quinoide form dihydrobiopterin, pathway overview
Products: -
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additional information
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Substrates: 7,8-dihydro-L-biopterin and pyrimethamine (PMA) interact with enzyme residues S112, Y194, L226, and S227, molecular dynamics and docking study, overview
Products: -
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additional information
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Substrates: 7,8-dihydro-L-biopterin and pyrimethamine (PMA) interact with enzyme residues S112, Y194, L226, and S227, molecular dynamics and docking study, overview
Products: -
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additional information
?
-
-
Substrates: the enzyme mediates the synthesis of tetrahydropteridines
Products: -
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additional information
?
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Substrates: enzyme is used by the organism to bypass antifolate inhibition, catalytic pathway
Products: -
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additional information
?
-
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Substrates: enzyme is used by the organism to bypass antifolate inhibition, catalytic pathway
Products: -
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additional information
?
-
Substrates: enzyme PTR1 synthesizes the formation of tetrahydrobiopterin from biopterin via dihydrobiopterin or from the quinoide form dihydrobiopterin, pathway overview
Products: -
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additional information
?
-
-
Substrates: the enzyme is involved in the resistance to the methotrexate, aminopterin and trimethoprim antifolates
Products: -
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additional information
?
-
-
Substrates: essential for the salvage of pterins
Products: -
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additional information
?
-
-
Substrates: the enzyme is involved in the resistance to the methotrexate, aminopterin and trimethoprim antifolates
Products: -
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2 biopterin + 3 NADPH + 3 H+
dihydrobiopterin + tetrahydrobiopterin + 3 NADP+
6-biopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
7,8-dihydrofolate + NADPH + H+
5,6,7,8-tetrahydrofolate + NADP+
biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
biopterin + NADPH + H+
7,8-dihydrobiopterin + NADP+
biopterin + NADPH + H+
dihydrobiopterin + NADP+
dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
folate + NADPH + H+
7,8-dihydrofolate + NADP+
folate + NADPH + H+
7,8-dihydrofolate + tetrahydrofolate + NADP+
additional information
?
-
2 biopterin + 3 NADPH + 3 H+
dihydrobiopterin + tetrahydrobiopterin + 3 NADP+
Substrates: essential enzyme of pterin and folate metabolism
Products: -
?
2 biopterin + 3 NADPH + 3 H+
dihydrobiopterin + tetrahydrobiopterin + 3 NADP+
-
Substrates: salvage of pterins, enzyme acts as a metabolic bypass for drugs targeting dihydrofolate reductase, PTR1 contributes about 10% of the reduction of folates in wild-type cells while the remaining 90% is due to the activity of dihydrofolate reductase-thymidylate synthase (EC 1.5.1.3)
Products: -
?
6-biopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
?
6-biopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
?
7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
?
7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
?
7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
?
7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: best substrate
Products: -
?
7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: best substrate
Products: -
?
7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
?
7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
?
7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
?
7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
-
Substrates: -
Products: -
?
7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: best substrate
Products: -
?
7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: best substrate
Products: -
?
7,8-dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
?
7,8-dihydrofolate + NADPH + H+
5,6,7,8-tetrahydrofolate + NADP+
Substrates: -
Products: -
?
7,8-dihydrofolate + NADPH + H+
5,6,7,8-tetrahydrofolate + NADP+
Substrates: -
Products: -
?
biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
Substrates: -
Products: -
?
biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
Substrates: -
Products: -
?
biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
Substrates: -
Products: -
?
biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
Substrates: -
Products: -
?
biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
Substrates: -
Products: -
?
biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
-
Substrates: -
Products: -
?
biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
Substrates: -
Products: -
?
biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
-
Substrates: -
Products: -
?
biopterin + 2 NADPH + 2 H+
5,6,7,8-tetrahydrobiopterin + 2 NADP+
Substrates: -
Products: -
?
biopterin + NADPH + H+
7,8-dihydrobiopterin + NADP+
Substrates: -
Products: -
?
biopterin + NADPH + H+
7,8-dihydrobiopterin + NADP+
Substrates: -
Products: -
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biopterin + NADPH + H+
dihydrobiopterin + NADP+
Substrates: -
Products: -
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biopterin + NADPH + H+
dihydrobiopterin + NADP+
Substrates: -
Products: -
?
dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+
Substrates: -
Products: -
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dihydrobiopterin + NADPH + H+
5,6,7,8-tetrahydrobiopterin + NADP+