Fitoen desaturaza (formira 3,4-didehidrolikopen)
(Preusmjereno sa stranice 15-cis-fitoen:akceptor oksidoreduktaza (formira 3,4-didehidrolikopen))
| Fitoen desaturaza (formira 3,4-didehidrolikopen) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifikatori | |||||||||
| EC broj | 1.3.99.30 | ||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB | RCSB PDB PDBe PDBj PDBsum | ||||||||
| |||||||||
Fitoen desaturaza (formira 3,4-didehidrolikopen) (EC 1.3.99.30, petostepna fitoenska desaturaza, fitoenska desaturaza (nespecifična), Al-1) je enzim sa sistematskim imenom 15-cis-fitoen:akceptor oksidoreduktaza (formira 3,4-didehidrolikopen).[1][2] Ovaj enzim katalizuje sledeću hemijsku reakciju
- 15-cis-fitoen + 5 akceptor sve-trans-3,4-didehidrolikopen + 5 redukovani akceptor (sveukupna reakcija)
- (1a) 15-cis-fitoen + akceptor sve-trans-fitofluen + redukovani akceptor
- (1b) sve-trans-fitofluen + akceptor sve-trans-zeta-karoten + redukovani akceptor
- (1c) sve-trans-zeta-karoten + akceptor sve-trans-neurosporen + redukovani akceptor
- (1d) sve-trans-neurosporen + akceptor sve-trans-likopen + redukovani akceptor
- (1e) sve-trans-likopen + akceptor sve-trans-3,4-didehidrolikopen + redukovani akceptor
Ovaj enzim učestvuje u karotenoidnoj biosinteza i katalizuje do pet koraka desaturacije, cf. EC 1.3.99.28, fitoenska desaturaza (formira neurosporen), EC 1.3.99.29, fitoen desaturaza (formira zeta-karoten) i EC 1.3.99.31, fitoen desaturaza (formira likopen).
Reference[uredi | uredi kod]
- ↑ Hausmann, A. and Sandmann, G. (2000). „A single five-step desaturase is involved in the carotenoid biosynthesis pathway to β-carotene and torulene in Neurospora crassa”. Fungal Genet. Biol. 30: 147-153. PMID 11017770.
- ↑ Estrada, A.F., Maier, D., Scherzinger, D., Avalos, J. and Al-Babili, S. (2008). „Novel apocarotenoid intermediates in Neurospora crassa mutants imply a new biosynthetic reaction sequence leading to neurosporaxanthin formation”. Fungal Genet. Biol. 45: 1497-1505. PMID 18812228.
Literatura[uredi | uredi kod]
- 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.