Sarkozin/dimetilglicin N-metiltransferaza
| Sarkozin/dimetilglicin N-metiltransferaza | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifikatori | |||||||||
| EC broj | 2.1.1.157 | ||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB | 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.
- ↑ 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.
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