23S rRNK (adenozin1067-2'-O)-metiltransferaza

23S rRNK (adenozin1067-2'-O)-metiltransferaza (EC 2.1.1.230, 23S rRNK A1067 2'-metiltransferaza, metilaza tiostreptonske otpornosti, metiltransferaza nosiheptidne otrpornosti) je enzim sa sistematskim imenom S-adenozil-L-metionin:23S rRNK (adenozin1067-2'-O)-metiltransferaza.[1][2][3][4] Ovaj enzim katalizuje sledeću hemijsku reakciju

23S rRNK (adenozin1067-2'-O)-metiltransferaza
Identifikatori
EC broj2.1.1.230
Baze podataka
IntEnzIntEnz pregled
BRENDABRENDA pristup
ExPASyNiceZyme pregled
KEGGKEGG pristup
MetaCycmetabolički put
PRIAMprofil
Strukture PBPRCSB PDB PDBe PDBj PDBsum
S-adenozil-L-metionin + adenozin1067 u 23S rRNK S-adenozil-L-homocistein + 2'-O-metiladenozin1067 u 23S rRNK

Ova metilaza je odgovorna za autoimunost Streptomyces azureus koji formira tiostrepton.

Reference уреди

  1. ^ Bechthold, A. & Floss, H.G. (1994). „Overexpression of the thiostrepton-resistance gene from Streptomyces azureus in Escherichia coli and characterization of recognition sites of the 23S rRNA A1067 2′-methyltransferase in the guanosine triphosphatase center of 23S ribosomal RNA”. Eur. J. Biochem. 224: 431—437. PMID 7925357. 
  2. ^ Thompson, J., Schmidt, F. and Cundliffe, E. (1982). „Site of action of a ribosomal RNA methylase conferring resistance to thiostrepton”. J. Biol. Chem. 257: 7915—7917. PMID 6806287. 
  3. ^ Thompson, J. & Cundliffe, E. (1981). „Purification and properties of an RNA methylase produced by Streptomyces azureus and involved in resistance to thiostrepton”. J. Gen. Microbiol. 124: 291—297. 
  4. ^ Yang, H., Wang, Z., Shen, Y., Wang, P., Jia, X., Zhao, L., Zhou, P., Gong, R., Li, Z., Yang, Y., Chen, D., Murchie, A.I. and Xu, Y. (2010). „Crystal structure of the nosiheptide-resistance methyltransferase of Streptomyces actuosus”. Biochemistry. 49: 6440—6450. PMID 20550164. 

Literatura уреди

Spoljašnje veze уреди