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A cell-permeable dipeptide that reversibly blocks the homodimerization of aminoimidazole carboxamide ribonucleotide transformylase/inosine nomophosphate cyclohydrolase (ATIC) and inhibits its activity (Ki = 691nM, Kd = 240nM). AITC is a bifunctional enzyme that catalyzes the last two steps of de novo purine biosynthesis. Increases the intracellular levels of AICAR leading to the activation of AMP-activated protein kinase (AMPK). Shown to reduce cell viability in a dose-dependent manner. Exhibits a longer half-life and sustained AMPK activation (~24h), compared to AICA-riboside. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 10mg. Molecular Formula: C??H??N?O?. US Biological Life Sciences.
Worldwide
GTP cyclohydrolase I
The reaction involves hydrolysis of two C-N bonds and isomerization of the pentose unit; the recyclization may be non-enzymic. This enzyme is involved in the de novo synthesis of tetrahydrobiopterin from GTP, with the other enzymes involved being EC 1.1.1.153 (sepiapterin reductase) and EC 4.2.3.12 (6-pyruvoyltetrahydropterin synthase). Group: Enzymes. Synonyms: GTP cyclohydrolase; guanosine triphosphate cyclohydrolase; guanosine triphosphate 8-deformylase; dihydroneopterin triphosphate synthase; GTP 8-formylhydrolase. Enzyme Commission Number: EC 3.5.4.16. CAS No. 37289-19-3. 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-4542; GTP cyclohydrolase I; EC 3.5.4.16; 37289-19-3; GTP cyclohydrolase; guanosine triphosphate cyclohydrolase; guanosine triphosphate 8-deformylase; dihydroneopterin triphosphate synthase; GTP 8-formylhydrolase. Cat No: EXWM-4542.
GTP cyclohydrolase II
Two C-N bonds are hydrolysed, releasing formate, with simultaneous removal of the terminal diphosphate. Group: Enzymes. Synonyms: guanosine triphosphate cyclohydrolase II; GTP-8-formylhydrolase. Enzyme Commission Number: EC 3.5.4.25. CAS No. 56214-35-8. 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-4552; GTP cyclohydrolase II; EC 3.5.4.25; 56214-35-8; guanosine triphosphate cyclohydrolase II; GTP-8-formylhydrolase. Cat No: EXWM-4552.
GTP cyclohydrolase IIa
Requires Mg2+. This enzyme catalyses the hydrolysis of the imidazole ring of guanosine 5'-triphosphate, N7-methylguanosine 5'-triphosphate or inosine 5'-triphosphate. Xanthosine 5'-triphosphate and ATP are not substrates. It also catalyses the hydrolysis of diphosphate to form two equivalents of phosphate. Unlike GTP cyclohydrolase II (EC 3.5.4.25), this enzyme does not release formate, but does hydrolyse the diphosphate from GTP to phosphate. Group: Enzymes. Enzyme Commission Number: EC 3.5.4.29. 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-4556; GTP cyclohydrolase IIa; EC 3.5.4.29. Cat No: EXWM-4556.
GTP cyclohydrolase IV
Requires Fe2+. A zinc protein. The enzyme is involved in methanopterin biosynthesis in methanogenic archaea. cf. GTP cyclohydrolase I (EC 3.5.4.16), GTP cyclohydrolase II (EC 3.5.4.25) and GTP cyclohydrolase IIa (EC 3.5.4.29). Group: Enzymes. Synonyms: MptA; GTP cyclohydrolase MptA. Enzyme Commission Number: EC 3.5.4.39. 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-4567; GTP cyclohydrolase IV; EC 3.5.4.39; MptA; GTP cyclohydrolase MptA. Cat No: EXWM-4567.
IMP cyclohydrolase
This enzyme belongs to the family of hydrolases, those acting on carbon-nitrogen bonds other than peptide bonds, specifically in cyclic amidines. The systematic name of this enzyme class is IMP 1,2-hydrolase (decyclizing). Other names in common use include inosinicase, and inosinate cyclohydrolase. This enzyme catalyses the cyclisation of 5-formylamidoimidazole-4-carboxamide ribonucleotide to IMP, a reaction which is important in de novo purine biosynthesis in archaeal species. Group: Enzymes. Synonyms: inosinicase; inosinate cyclohydrolase; IMP 1,2-hydrolase (decyclizing). Enzyme Commission Number: EC 3.5.4.10. CAS No. 9013-81-4. 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-4537; IMP cyclohydrolase; EC 3.5.4.10; 9013-81-4; inosinicase; inosinate cyclohydrolase; IMP 1,2-hydrolase (decyclizing). Cat No: EXWM-4537.
methenyltetrahydrofolate cyclohydrolase
In eukaryotes, the enzyme occurs as a trifunctional enzyme that also has methylenetetrahydrofolate dehydrogenase (NADP+) (EC 1.5.1.5) and formate-tetrahydrofolate ligase (EC 6.3.4.3) activity. In some prokaryotes, it occurs as a bifunctional enzyme that also has dehydrogenase (EC 1.5.1.5) activity or formimidoyltetrahydrofolate cyclodeaminase (EC 4.3.1.4) activity. Group: Enzymes. Synonyms: Citrovorum factor cyclodehydrase; cyclohydrolase; formyl-methenyl-methylenetetrahydrofolate synthetase (combined); 5,10-methenyltetrahydrofolate 5-hydrolase (decyclizing). Enzyme Commission Number: EC 3.5.4.9. CAS No. 9027-97-8. 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-4577; methenyltetrahydrofolate cyclohydrolase; EC 3.5.4.9; 9027-97-8; Citrovorum factor cyclodehydrase; cyclohydrolase; formyl-methenyl-methylenetetrahydrofolate synthetase (combined); 5,10-methenyltetrahydrofolate 5-hydrolase (decyclizing). Cat No: EXWM-4577.
methenyltetrahydromethanopterin cyclohydrolase
Methanopterin is a pterin analogue. The enzyme is involved in the formation of methane from CO2 in Methanobacterium thermoautotrophicum. Group: Enzymes. Synonyms: 5,10-methenyltetrahydromethanopterin cyclohydrolase; N5,N10-methenyltetrahydromethanopterin cyclohydrolase; methenyl-H4MPT cyclohydrolase; 5,10-methenyltetrahydromethanopterin 10-hydrolase (decyclizing). Enzyme Commission Number: EC 3.5.4.27. CAS No. 99533-50-3. 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-4554; methenyltetrahydromethanopterin cyclohydrolase; EC 3.5.4.27; 99533-50-3; 5,10-methenyltetrahydromethanopterin cyclohydrolase; N5,N10-methenyltetrahydromethanopterin cyclohydrolase; methenyl-H4MPT cyclohydrolase; 5,10-methenyltetrahydromethanopterin 10-hydrolase (decyclizing). Cat No: EXWM-4554.
phosphoribosyl-AMP cyclohydrolase
The Neurospora crassa enzyme also catalyses the reactions of EC 1.1.1.23 (histidinol dehydrogenase) and EC 3.6.1.31 (phosphoribosyl-ATP diphosphatase). Group: Enzymes. Synonyms: PRAMP-cyclohydrolase; phosphoribosyladenosine monophosphate cyclohydrolase; 1-(5-phospho-D-ribosyl)-AMP 1,6-hydrolase. Enzyme Commission Number: EC 3.5.4.19. CAS No. 37289-22-8. 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-4545; phosphoribosyl-AMP cyclohydrolase; EC 3.5.4.19; 37289-22-8; PRAMP-cyclohydrolase; phosphoribosyladenosine monophosphate cyclohydrolase; 1-(5-phospho-D-ribosyl)-AMP 1,6-hydrolase. Cat No: EXWM-4545.
2,4-Diamino-6-hydroxypyrimidine
2,4-Diamino-6-hydroxypyrimidine is a specific GTP cyclohydrolase I inhibitor (the rate-limiting enzyme in de novo pterin synthesis). 2,4-Diamino-6-hydroxypyrimidine blocks Tetrahydrobiopterin (BH4) synthesis and suppresses NO production [1] [2]. Uses: Scientific research. Group: Signaling pathways. CAS No. 56-06-4. Pack Sizes: 10 mM * 1 mL; 100 mg. Product ID: HY-100954.
The enzyme catalyses the second step in archaeal riboflavin and 7,8-didemethyl-8-hydroxy-5-deazariboflavin biosynthesis. The first step is catalysed by EC 3.5.4.29 (GTP cyclohydrolase IIa). The bacterial enzyme, EC 3.5.4.25 (GTP cyclohydrolase II) catalyses both reactions. Group: Enzymes. Synonyms: ArfB. Enzyme Commission Number: EC 3.5.1.102. 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-4381; 2-amino-5-formylamino-6-ribosylaminopyrimidin-4(3H)-one 5'-monophosphate deformylase; EC 3.5.1.102; ArfB. Cat No: EXWM-4381.
5,10-methylenetetrahydromethanopterin reductase
Catalyses an intermediate step in methanogenesis from CO2 and H2 in methanogenic archaea. Group: Enzymes. Synonyms: 5,10-methylenetetrahydromethanopterin cyclohydrolase; N5,N10-methylenetetrahydromethanopterin reductase; methylene-H4MPT reductase; coenzyme F420-dependent N5,N10-methenyltetrahydromethanopterin reductase; N5, N10-methylenetetrahydromethanopterin: coenzyme-F420 oxidoreductase. Enzyme Commission Number: EC 1.5.98.2. 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-1565; 5,10-methylenetetrahydromethanopterin reductase; EC 1.5.98.2; 5,10-methylenetetrahydromethanopterin cyclohydrolase; N5,N10-methylenetetrahydromethanopterin reductase; methylene-H4MPT reductase; coenzyme F420-dependent N5,N10-methenyltetrahydromethanopterin reductase; N5, N10-methylenetetrahydromethanopterin: coenzyme-F420 oxidoreductase. Cat No: EXWM-1565.
6,7-Dimethyltetrahydropterin hydrochloride
6,7-Dimethyltetrahydropterin is a non-competitive inhibitor of GTP cyclohydrolase I exhibiting an IC50 of 76-112 μM. Synonyms: 2-Amino-6,7-dimethyl-5,6,7,8-tetrahydropteridin-4-ol hydrochloride. Grades: ≥99%. CAS No. 167423-51-0. Molecular formula: C8H13N5O·HCl. Mole weight: 231.7.
6-pyruvoyltetrahydropterin synthase
Catalyses triphosphate elimination and an intramolecular redox reaction in the presence of Mg2+. It has been identified in human liver. This enzyme is involved in the de novo synthesis of tetrahydrobiopterin from GTP, with the other enzymes involved being EC 1.1.1.153 (sepiapterin reductase) and EC 3.5.4.16 (GTP cyclohydrolase I). Group: Enzymes. Synonyms: 2-amino-4-oxo-6-[(1S,2R)-1,2-dihydroxy-3-triphosphooxypropyl]-7,8-dihydroxypteridine triphosphate lyase; 6-[(1S,2R)-1,2-dihydroxy-3-triphosphooxypropyl]-7,8-dihydropterin triphosphate-lyase (6-pyruvoyl-5,6,7,8-tetrahydropterin-forming). Enzyme Commission Number: EC 4.2.3.12. CAS No. 97089-82-2. 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-5132; 6-pyruvoyltetrahydropterin synthase; EC 4.2.3.12; 97089-82-2; 2-amino-4-oxo-6-[(1S,2R)-1,2-dihydroxy-3-triphosphooxypropyl]-7,8-dihydroxypteridine triphosphate lyase; 6-[(1S,2R)-1,2-dihydroxy-3-triphosphooxypropyl]-7,8-dihydropterin triphosphate-lyase (6-pyruvoyl-5,6,7,8-tetrahydropterin-forming). Cat No: EXWM-5132.
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.
The substrate is the product of EC 3.5.4.25 GTP cyclohydrolase II. Group: Enzymes. Enzyme Commission Number: EC 3.5.4.26. CAS No. 68994-19-4. 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-4553; diamino hydroxyphosphoribosylaminopyrimidine deaminase; EC 3.5.4.26; 68994-19-4. Cat No: EXWM-4553.
formate-tetrahydrofolate ligase
In eukaryotes occurs as a trifunctional enzyme also having methylenetetrahydrofolate dehydrogenase (NADP+) (EC 1.5.1.5) and methenyltetrahydrofolate cyclohydrolase (EC 3.5.4.9) activity. Group: Enzymes. Synonyms: formyltetrahydrofolate synthetase; 10-formyltetrahydrofolate synthetase; tetrahydrofolic formylase; tetrahydrofolate formylase. Enzyme Commission Number: EC 6.3.4.3. CAS No. 9023-66-9. 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-5795; formate-tetrahydrofolate ligase; EC 6.3.4.3; 9023-66-9; formyltetrahydrofolate synthetase; 10-formyltetrahydrofolate synthetase; tetrahydrofolic formylase; tetrahydrofolate formylase. Cat No: EXWM-5795.
histidinol dehydrogenase
Also oxidizes L-histidinal. The Neurospora enzyme also catalyses the reactions of EC 3.5.4.19 (phosphoribosyl-AMP cyclohydrolase) and EC 3.6.1.31 (phosphoribosyl-ATP diphosphatase). Group: Enzymes. Synonyms: L-histidinol dehydrogenase. Enzyme Commission Number: EC 1.1.1.23. CAS No. 9028-27-7. 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-0136; histidinol dehydrogenase; EC 1.1.1.23; 9028-27-7; L-histidinol dehydrogenase. Cat No: EXWM-0136.
methylenetetrahydrofolate dehydrogenase (NADP+)
In eukaryotes, occurs as a trifunctional enzyme also having methenyltetrahydrofolate cyclohydrolase (EC 3.5.4.9) and formate-tetrahydrofolate ligase(EC 6.3.4.3) activity. In some prokaryotes occurs as a bifunctional enzyme also having methenyltetrahydrofolate cyclohydrolase activity (EC 3.5.4.9). Group: Enzymes. Synonyms: N5,N10-methylenetetrahydrofolate dehydrogenase; 5,10-methylenetetrahydrofolate:NADP oxidoreductase; 5,10-methylenetetrahydrofolate dehydrogenase; methylenetetrahydrofolate dehydrogenase; methylenetetrahydrofolate dehydrogenase (NADP). Enzyme Commission Number: EC 1.5.1.5. CAS No. 9029-14-5. 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-1531; methylenetetrahydrofolate dehydrogenase (NADP+); EC 1.5.1.5; 9029-14-5; N5,N10-methylenetetrahydrofolate dehydrogenase; 5,10-methylenetetrahydrofolate:NADP oxidoreductase; 5,10-methylenetetrahydrofolate dehydrogenase; methylenetetrahydrofolate dehydrogenase; methylenetetrahydrofolate dehydrogenase (NADP). Cat No: EXWM-1531.
phosphoribosyl-ATP diphosphatase
The Neurospora crassa enzyme also catalyses the reactions of EC 1.1.1.23 (histidinol dehydrogenase) and EC 3.5.4.19 (phosphoribosyl-AMP cyclohydrolase). Group: Enzymes. Synonyms: phosphoribosyl-ATP pyrophosphatase; phosphoribosyladenosine triphosphate pyrophosphatase; 1-(5-phosphoribosyl)-ATP diphosphohydrolase. Enzyme Commission Number: EC 3.6.1.31. CAS No. 69553-55-5. 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-4615; phosphoribosyl-ATP diphosphatase; EC 3.6.1.31; 69553-55-5; phosphoribosyl-ATP pyrophosphatase; phosphoribosyladenosine triphosphate pyrophosphatase; 1-(5-phosphoribosyl)-ATP diphosphohydrolase. Cat No: EXWM-4615.
preQ1 synthase
The reaction occurs in the reverse direction. This enzyme catalyses one of the early steps in the synthesis of queuosine (Q-tRNA), and is followed by the action of EC 2.4.2.29, queuine tRNA-ribosyltransferase. Queuosine is found in the wobble position of tRNAGUN in Eukarya and Bacteria and is thought to be involved in translational modulation. The enzyme is not a GTP cyclohydrolase, as was thought previously based on sequence-homology studies. Group: Enzymes. Synonyms: YkvM; QueF; preQ0 reductase; preQ0 oxidoreductase; 7-cyano-7-deazaguanine reductase; queuine synthase (incorrect as queuine is not the product); queuine:NADP+ oxidoreductase (incorrect as queuine is not the product). Enzyme Commission Number: EC 1.7.1.13. CAS No. 1256460-80-6. 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-1606; preQ1 synthase; EC 1.7.1.13; 1256460-80-6; YkvM; QueF; preQ0 reductase; preQ0 oxidoreductase; 7-cyano-7-deazaguanine reductase; queuine synthase (incorrect as queuine is not the product); queuine:NADP+ oxidoreductase (incorrect as queuine is not the product). Cat No: EXWM-1606.
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