GTP ciklohidrolaza I
GTP ciklohidrolaza I (EC 3.5.4.16, GTP ciklohidrolaza, guanozin trifosfatna ciklohidrolaza, guanozin trifosfat 8-deformilaza, dihidroneopterin trifosfatna sintaza, GTP 8-formilhidrolaza) je enzim sa sistematskim imenom GTP 7,8-8,9-dihidrolaza.[1][2][3] Ovaj enzim katalizuje sledeću hemijsku reakciju
| GTP ciklohidrolaza I | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| |||||||||
| Identifikatori | |||||||||
| EC broj | 3.5.4.16 | ||||||||
| CAS broj | 37289-19-3 | ||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB | RCSB PDB PDBe PDBj PDBsum | ||||||||
| |||||||||
- GTP + H2O format + 7,8-dihidroneopterin 3'-trifosfat
Rreakcija se sastoji od hidrolize dve C-N veze i izomerizacije pentozne jedinice. Reciklizacija može da bude neenzimatska.
Reference
uredi- ↑ Burg, A.W. and Brown, G.M. (1968). „The biosynthesis of folic acid. 8. Purification and properties of the enzyme that catalyzes the production of formate from carbon atom 8 of guanosine triphosphate”. J. Biol. Chem. 243: 2349-2358. PMID 4296838.
- ↑ Wolf, W.A. and Brown, G.M. (1969). „The biosynthesis of folic acid. X. Evidence for an Amadori rearrangement in the enzymatic formation of dihydroneopterin triphosphate from GTP”. Biochim. Biophys. Acta 192: 468-478. PMID 4904679.
- ↑ Supangat, S., Choi, Y.K., Park, Y.S., Son, D., Han, C.D. and Lee, K.H. (2005). „Expression, purification, crystallization and preliminary X-ray analysis of sepiapterin reductase from Chlorobium tepidum”. Acta Crystallogr. Sect. F Struct. Biol. Cryst. Commun. 61: 202-204. PMID 16510994.
Literatura
uredi- Nicholas C. Price, Lewis Stevens (1999). Fundamentals of Enzymology: The Cell and Molecular Biology of Catalytic Proteins (Third izd.). USA: Oxford University Press. ISBN 019850229X.
- Eric J. Toone (2006). Advances in Enzymology and Related Areas of Molecular Biology, Protein Evolution (Volume 75 izd.). Wiley-Interscience. ISBN 0471205036.
- Branden C, Tooze J.. Introduction to Protein Structure. New York, NY: Garland Publishing. ISBN: 0-8153-2305-0.
- Irwin H. Segel. Enzyme Kinetics: Behavior and Analysis of Rapid Equilibrium and Steady-State Enzyme Systems (Book 44 izd.). Wiley Classics Library. ISBN 0471303097.
- Robert A. Copeland (2013). Evaluation of Enzyme Inhibitors in Drug Discovery: A Guide for Medicinal Chemists and Pharmacologists (2nd izd.). Wiley-Interscience. ISBN 111848813X.
- Gerhard Michal, Dietmar Schomburg (2012). Biochemical Pathways: An Atlas of Biochemistry and Molecular Biology (2nd izd.). Wiley. ISBN 0470146842.