Sarkozin/dimetilglicin N-metiltransferaza
| Sarkozin/dimetilglicin N-metiltransferaza | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifikatori | |||||||||
| EC broj | 2.1.1.157 | ||||||||
| 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 | ||||||||
| |||||||||
Sarkozin/dimetilglicin N-metiltransferaza (EC 2.1.1.157, ApDMT, sarkozin-dimetilglicinska metiltransferaza, SDMT, sarkozin dimetilglicinska N-metiltransferaza, S-adenozil-L-metionin:N,N-dimetilglicin N-metiltransferaza) je enzim sa sistematskim imenom S-adenozil-L-metionin:sarkozin(or N,N-dimetilglicin) N-metiltransferaza (formira N,N-dimetilglicin(or betain)).[1][2][3] Ovaj enzim katalizuje sledeću hemijsku reakciju
- 2 S-adenozil-L-metionin + sarkozin 2 S-adenozil-L-homocistein + betain (sveukupna reakcija)
- (1a) S-adenozil-L-metionin + sarkozin S-adenozil-L-homocistein + N,N-dimetilglicin
- (1b) S-adenozil-L-metionin + N,N-dimetilglicin S-adenozil-L-homocistein + betain
Cijanobakterija Aphanocthece halophytica sintetiše betain iz glicina putem metilacije koja se odvija u tri koraka. Ovaj enzim posreduje drugi korak te sekvence.
Reference
[uredi | uredi izvor]- ^ Nyyssölä, A., Kerovuo, J., Kaukinen, P., von Weymarn, N. and Reinikainen, T. (2000). „Extreme halophiles synthesize betaine from glycine by methylation”. J. Biol. Chem. 275: 22196—22201. PMID 10896953.
- ^ Nyyssölä, A., Reinikainen, T. and Leisola, M. (2001). „Characterization of glycine sarcosine N-methyltransferase and sarcosine dimethylglycine N-methyltransferase.”. Appl. Environ. Microbiol. 67: 2044—2050. PMID 11319079.
- ^ Waditee, R., Tanaka, Y., Aoki, K., Hibino, T., Jikuya, H., Takano, J., Takabe, T. and Takabe, T. (2003). „Isolation and functional characterization of N-methyltransferases that catalyze betaine synthesis from glycine in a halotolerant photosynthetic organism Aphanothece halophytica”. J. Biol. Chem. 278: 4932—4942. PMID 12466265.
Literatura
[uredi | uredi izvor]- 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.
- William P. Jencks (1987). Catalysis in Chemistry and Enzymology. Dover Publications. ISBN 0486654605.
Spoljašnje veze
[uredi | uredi izvor]- Sarcosine/dimethylglycine+N-methyltransferase na US National Library of Medicine Medical Subject Headings (MeSH)
