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| Product | Description | |
|---|---|---|
| sepiapterin reductase (L-erythro-7,8-dihydrobiopterin forming) | This enzyme catalyses the final step in the de novo synthesis of tetrahydrobiopterin from GTP. The enzyme, which is found in higher animals and some fungi and bacteria, produces the erythro form of tetrahydrobiopterin. cf. EC 1.1.1.325, sepiapterin reductase (L-threo-7,8-dihydrobiopterin forming). Group: Enzymes. Synonyms: SR. Enzyme Commission Number: EC 1.1.1.153. CAS No. 9059-48-7. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-0058; sepiapterin reductase (L-erythro-7,8-dihydrobiopterin forming); EC 1.1.1.153; 9059-48-7; SR. Cat No: EXWM-0058. |  |
| sepiapterin reductase (L-threo-7,8-dihydrobiopterin forming) | This enzyme, isolated from the bacterium Chlorobium tepidum, catalyses the final step in the de novo synthesis of tetrahydrobiopterin from GTP. cf. EC 1.1.1.153, sepiapterin reductase (L-erythro-7,8-dihydrobiopterin forming). Group: Enzymes. Enzyme Commission Number: EC 1.1.1.325. CAS No. 9059-48-7. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-0238; sepiapterin reductase (L-threo-7,8-dihydrobiopterin forming); EC 1.1.1.325; 9059-48-7. Cat No: EXWM-0238. | |
| 7,8-dihydro biopterin | 7,8-dihydro biopterin is a precursor of BH4 synthesis and a noncompetitive inhibitor of GCH-I (GTP cyclohydrolase I). It is the reduced form of Biopterin. Synonyms: 7,8-Dihydro-L-biopterin; 2-Amino-6-[(1R,2S)-1,2-dihydroxypropyl]-7,8-dihydro-4(3H)-pteridinone; L-erythro-7,8-Dihydrobiopterin; L-erythro-Dihydrobiopterin. Grades: > 95%. CAS No. 6779-87-9. Molecular formula: C9H13N5O3. Mole weight: 239.24. |  |
| 7,8-Dihydro-L-biopterin | 7,8-dihydro-L-Biopterin is a precursor of BH4 synthesis and a noncompetitive inhibitor of GCH-I (GTP cyclohydrolase I), with a Ki of 14.4 μM. Applications: A precursor of bh4 synthesis. Group: Coenzymes. Synonyms: BH2; Dihydrobiopterin; Quinonoid dihydrobiopterin. CAS No. 6779-87-9. Purity: ≥98%. Mole weight: 239.23. Appearance: Powder. Form: Solid. BH2; Dihydrobiopterin; Quinonoid dihydrobiopterin; 7,8-Dihydro-L-biopterin; 6779-87-9. Cat No: COEC-066. | |
| 7,8-Dihydro-L-biopterin-d3 | 7,8-Dihydro-L-biopterin-d3 is a labeled reduced form of Biopterin. An oxidation product of tetrahydrobiopterin, a naturally occurring cofactor of the aromatic amino acid hydroxylase, is involved in the synthesis of tyrosine and neurotransmitters dopamine and serotonin. It is a noncompetitive inhibitor of GTP cyclohydrolase I, with a Ki of 14.4 μM. Applications: Noncompetitive inhibitor of gtp cyclohydrolase i. Group: Coenzymes. Synonyms: 2-Amino-6-[(1R,2S)-1,2-dihydroxypropyl]-7,8-dihydro-4(3H)-pteridinone; 7,8-Dihydrobiopterin. CAS No. 6779-87-9 (unlabeled). Mole weight: 242.25. Form: Solid. 2-Amino-6-[(1R,2S)-1,2-dihydroxypropyl]-7,8-dihydro-4(3H)-pteridinone; 7,8-Dihydrobiopterin; 7,8-Dihydro-L-biopterin-d3; 6779-87-9 (unlabeled). Cat No: COEC-091. | |
| phenylalanine 4-monooxygenase | The active centre contains mononuclear iron(II). The reaction involves an arene oxide that rearranges to give the phenolic hydroxy group. This results in the hydrogen at C-4 migrating to C-3 and in part being retained. This process is known as the NIH-shift. The 4a-hydroxytetrahydrobiopterin formed can dehydrate to 6,7-dihydrobiopterin, both spontaneously and by the action of EC 4.2.1.96, 4a-hydroxytetrahydrobiopterin dehydratase. The 6,7-dihydrobiopterin can be enzymically reduced back to tetrahydrobiopterin, by EC 1.5.1.34, 6,7-dihydropteridine reductase, or slowly rearranges into the more stable compound 7,8-dihydrobiopterin. Group: Enzymes. Synonyms: phenylalaninase; phenylalanine 4-hydroxylase; phenylalanine hydroxylase. Enzyme Commission Number: EC 1.14.16.1. CAS No. 9029-73-6. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-0953; phenylalanine 4-monooxygenase; EC 1.14.16.1; 9029-73-6; phenylalaninase; phenylalanine 4-hydroxylase; phenylalanine hydroxylase. Cat No: EXWM-0953. | |
| pteridine reductase | The enzyme from Leishmania (both amastigote and promastigote forms) catalyses the reduction by NADPH of folate and a wide variety of unconjugated pterins, including biopterin, to their tetrahydro forms. It also catalyses the reduction of 7,8-dihydropterins and 7,8-dihydrofolate to their tetrahydro forms. In contrast to EC 1.5.1.3 (dihydrofolate reductase) and EC 1.5.1.34 (6,7-dihydropteridine reductase), pteridine reductase will not catalyse the reduction of the quinonoid form of dihydrobiopterin. The enzyme is specific for NADPH; no activity has been detected with NADH. It also differs from EC 1.5.1.3 (dihydrofolate reductase) in being specific for the Si-face of NADPH. Group: Enzymes. Synonyms: PTR1; pteridine reductase 1. Enzyme Commission Number: EC 1.5.1.33. CAS No. 131384-61-7. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-1515; pteridine reductase; EC 1.5.1.33; 131384-61-7; PTR1; pteridine reductase 1. Cat No: EXWM-1515. | |
| tryptophan 5-monooxygenase | The active centre contains mononuclear iron(II). The enzyme is activated by phosphorylation, catalysed by a Ca2+-activated protein kinase. The 4a-hydroxytetrahydrobiopterin formed can dehydrate to 6,7-dihydrobiopterin, both spontaneously and by the action of EC 4.2.1.96, 4a-hydroxytetrahydrobiopterin dehydratase. The 6,7-dihydrobiopterin can be enzymically reduced back to tetrahydrobiopterin, by EC 1.5.1.34 (6,7-dihydropteridine reductase), or slowly rearranges into the more stable compound 7,8-dihydrobiopterin. Group: Enzymes. Synonyms: L-tryptophan hydroxylase; indoleacetic acid-5-hydroxylase; tryptophan 5-hydroxylase; tryptophan hydroxylase. Enzyme Commission Number: EC 1.14.16.4. CAS No. 9037-21-2. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-0956; tryptophan 5-monooxygenase; EC 1.14.16.4; 9037-21-2; L-tryptophan hydroxylase; indoleacetic acid-5-hydroxylase; tryptophan 5-hydroxylase; tryptophan hydroxylase. Cat No: EXWM-0956. | |
| tyrosine 3-monooxygenase | The active centre contains mononuclear iron(II). The enzyme is activated by phosphorylation, catalysed by EC 2.7.11.27, [acetyl-CoA carboxylase] kinase. The 4a-hydroxytetrahydrobiopterin formed can dehydrate to 6,7-dihydrobiopterin, both spontaneously and by the action of EC 4.2.1.96, 4a-hydroxytetrahydrobiopterin dehydratase. The 6,7-dihydrobiopterin can be enzymically reduced back to tetrahydrobiopterin, by EC 1.5.1.34 (6,7-dihydropteridine reductase), or slowly rearranges into the more stable compound 7,8-dihydrobiopterin. Group: Enzymes. Synonyms: L-tyrosine hydroxylase; tyrosine 3-hydroxylase; tyrosine hydroxylase. Enzyme Commission Number: EC 1.14.16.2. CAS No. 9036-22-0. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-0954; tyrosine 3-monooxygenase; EC 1.14.16.2; 9036-22-0; L-tyrosine hydroxylase; tyrosine 3-hydroxylase; tyrosine hydroxylase. Cat No: EXWM-0954. | |
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