Skvalen—hopanolna ciklaza
| Skvalen—hopanolna ciklaza | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifikatori | |||||||||
| EC broj | 4.2.1.129 | ||||||||
| Baze podataka | |||||||||
| IntEnz | IntEnz pregled | ||||||||
| BRENDA | BRENDA pristup | ||||||||
| ExPASy | NiceZyme pregled | ||||||||
| KEGG | KEGG pristup | ||||||||
| MetaCyc | metabolički put | ||||||||
| PRIAM | profil | ||||||||
| Strukture PBP | RCSB PDB PDBe PDBj PDBsum | ||||||||
| |||||||||
Skvalen—hopanolna ciklaza (EC 4.2.1.129, skvalen—hopenska ciklaza) je enzim sa sistematskim imenom hopan-22-ol hidrolijaza.[1][2] Ovaj enzim katalizuje sledeću hemijsku reakciju
- hopan-22-ol skvalen + H2O
Ovaj enzim formira ciklizacione produkte hopena (cf. EC 5.4.99.17) i hopanola iz skvalena u konstantnom odnosu 5:1.
Reference[уреди | уреди извор]
- ^ Hoshino, T., Nakano, S., Kondo, T., Sato, T. and Miyoshi, A. (2004). „Squalene-hopene cyclase: final deprotonation reaction, conformational analysis for the cyclization of (3R,S)-2,3-oxidosqualene and further evidence for the requirement of an isopropylidene moiety both for initiation of the polycyclization cascade and for the formation of the 5-membered E-ring”. Org Biomol Chem. 2: 1456—1470. PMID 15136801.
- ^ Sato, T., Kouda, M. and Hoshino, T. (2004). „Site-directed mutagenesis experiments on the putative deprotonation site of squalene-hopene cyclase from Alicyclobacillus acidocaldarius”. Biosci. Biotechnol. Biochem. 68: 728—738. PMID 15056909.
Literatura[уреди | уреди извор]
- Nicholas C. Price; Lewis Stevens (1999). Fundamentals of Enzymology: The Cell and Molecular Biology of Catalytic Proteins (Third изд.). USA: Oxford University Press. ISBN 019850229X.
- Eric J. Toone (2006). Advances in Enzymology and Related Areas of Molecular Biology, Protein Evolution (Volume 75 изд.). 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 изд.). Wiley Classics Library. ISBN 0471303097.
- William P. Jencks (1987). Catalysis in Chemistry and Enzymology. Dover Publications. ISBN 0486654605.
Spoljašnje veze[уреди | уреди извор]
- Squalene---hopanol+cyclase на US National Library of Medicine Medical Subject Headings (MeSH)
