Izomeraza
U biohemiji, izomeraza je enzim koji katalizuje strukturno preuređenje izomera. Izomeraze katalizuju reakcije oblika:
- A → B
gde je B izomer molekula A.
Nomenklatura
Imena izomeraza se formiraju kao „supstrat izomeraza“ (na primer, enoil CoA izomeraza), ili kao „supstrat tip izomeraze“ (na primer, fosfoglukomutaza).
Klasifikacija
EC klasifikacija enzima grupiše izomeraze u klasu: EC 5. One se dele u šest potklasa:
- EC 5.1 obuhvata enzime koji katalizuju racemizaciju (racemaze) i epimerizaciju (epimeraze)
- EC 5.2 obuhvata enzime koji katalizuju izomerizaciju geometrijskih izomera (cis-trans izomeraze)
- EC 5.3 obuhvata intramolekularne oksidoreduktaze
- EC 5.4 obuhvata intramolekularne transferaze (mutaze)
- EC 5.5 obuhvata intramolekularne lijaze
- EC 5.99 obuhvata druge izomeraze (uključujući topoizomeraze)
Literatura
- EC 5 Introduction from the Department of Chemistry at Queen Mary, University of London
- Isomerase - Dorland's Medical Dictionary for Health Consumers. 2007. Saunders, an imprint of Elsevier, Inc 6 Nov. 2009
- Isomerase - Webster's New World College Dictionary. LoveToKnow, n.d. Web. 6 November 2009.
- 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
- GoPubMed: Top authors, journals, places publishing on Isomerases
- п
- р
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- EC1 Oksidoreduktaze /spisak
- EC2 Transferaze /spisak
- EC3 Hidrolaze /spisak
- EC4 Lijaze /spisak
- EC5 Izomeraze /spisak
- EC6 Ligaze /spisak
- B enzm: 1.1/2/3/4/5/6/7/8/10/11/13/14/15-18, 2.1/2/3/4/5/6/7/8, 2.7.10, 2.7.11-12, 3.1/2/3/4/5/6/7, 3.1.3.48, 3.4.21/22/23/24, 4.1/2/3/4/5/6, 5.1/2/3/4/99, 6.1-3/4/5-6