Hidroksimetilbilan sintaza

Hidroksimetilbilan sintaza (EC 2.5.1.61, HMB-sintaza, porphobilinogen deaminaza, pre-uroporfirinogen sintaza, uroporfirinogen I sintaza, uroporfirinogen I sintetaza, uroporfirinogen sintaza, uroporfirinogen sintetaza, porfobilinogen amonijak-lijaza (polimerizacija), (4-(2-karboksietil)-3-(karboksimetil)pirol-2-il)metiltransferaza (hidrolizacija)) je enzim sa sistematskim imenom porfobilinogen:(4-(2-karboksietil)-3-(karboksimetil)pirrol-2-il)metiltransferaza (hidroliza).^{[1][2][3][4][5][6]} Ovaj enzim katalizuje sledeću hemijsku reakciju

4 porfobilinogen +H₂O ${\displaystyle \rightleftharpoons }$ hidroksimetilbilan + 4 NH₃

Hidroksimetilbilan sintaza
Porphobilinogen deaminaza monomer, Human
Identifikatori
EC broj	2.5.1.61
CAS broj	9074-91-3
IntEnz	IntEnz view
BRENDA	BRENDA entry
ExPASy	NiceZyme view
KEGG	KEGG entry
MetaCyc	metabolic pathway
PRIAM	profile
PDB	RCSB PDB PDBe PDBj PDBsum
Pretraga PMC articles PubMed articles NCBI Protein search

Ovaj enzim deluje putem postepene adicije pirolilmetilnih grupa.

Reference

1. Battersby, A.R., Fookes, C.J.R., Matcham, G.W.J. and McDonald, E. (1980). „Biosynthesis of the pigments of life: formation of the macrocycle”. Nature 285: 17-21. PMID 6769048.
2. Frydman, R.B. and Feinstein, G. (1974). „Studies on porphobilinogen deaminase and uroporphyrinogen 3 cosynthase from human erythrocytes”. Biochim. Biophys. Acta 350: 358-373. PMID 4847568.
3. Levin, E.Y. and Coleman, D.L. (1967). „The enzymatic conversion of porphobilinogen to uroporphyrinogen catalyzed by extracts of hematopoietic mouse spleen”. J. Biol. Chem. 242: 4247-4253. PMID 6061709.
4. Warren, M.J. and Jordan, P.M. (1988). „Investigation into the nature of substrate binding to the dipyrromethane cofactor of Escherichia coli porphobilinogen deaminase”. Biochemistry 27: 9020-9030. PMID 3069132.
5. Miller, A.D., Hart, G.J., Packman, L.C. and Battersby, A.R. (1988). „Evidence that the pyrromethane cofactor of hydroxymethylbilane synthase (porphobilinogen deaminase) is bound to the protein through the sulphur atom of cysteine-242”. Biochem. J. 254: 915-918. PMID 3196304.
6. Battersby, A.R. (2000). „Tetrapyrroles: the pigments of life”. Nat. Prod. Rep. 17: 507-526. PMID 11152419.

Literatura

• 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.

Spoljašnje veze

• MeSH Hydroxymethylbilane+synthase