16S rRNK (adenin1408-N1)-metiltransferaza

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16S rRNK (adenin1408-N1)-metiltransferaza
Identifikatori
EC broj 2.1.1.180
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB RCSB PDB PDBe PDBj PDBsum

16S rRNK (adenin1408-N1 (EC 2.1.1.180, metilaza kanamicin-apramicinske otpornosti, 16S rRNK:m1A1408 metiltransferaza, KamB, NpmA, 16S rRNK m1A1408 metiltransferaza) je enzim sa sistematskim imenom S-adenozil-L-metionin:16S rRNK (adenin1408-N1)-metiltransferaza.[1][2][3][4] Ovaj enzim katalizuje sledeću hemijsku reakciju

S-adenozil-L-metionin + adenin1408 u 16S rRNK S-adenozil-L-homocistein + N1-metiladenin1408 u 16S rRNK

Ovaj enzim pruža otpornost na panaminoglikozid ometanjem vezivanja aminoglikozida za A mesto 16S rRNK, tako što N1-metiliše u poziciji adenin1408.

Reference[uredi | uredi kod]

  1. Beauclerk, A.A. and Cundliffe, E. (1987). „Sites of action of two ribosomal RNA methylases responsible for resistance to aminoglycosides”. J. Mol. Biol. 193: 661-671. PMID 2441068. 
  2. Koscinski, L., Feder, M. and Bujnicki, J.M. (2007). „Identification of a missing sequence and functionally important residues of 16S rRNA:m1A1408 methyltransferase KamB that causes bacterial resistance to aminoglycoside antibiotics”. Cell Cycle 6: 1268-1271. PMID 17495534. 
  3. Holmes, D.J., Drocourt, D., Tiraby, G. and Cundliffe, E. (1991). „Cloning of an aminoglycoside-resistance-encoding gene, kamC, from Saccharopolyspora hirsuta: comparison with kamB from Streptomyces tenebrarius. Gene 102: 19-26. PMID 1840536. 
  4. Wachino, J., Shibayama, K., Kurokawa, H., Kimura, K., Yamane, K., Suzuki, S., Shibata, N., Ike, Y. and Arakawa, Y. (2007). „Novel plasmid-mediated 16S rRNA m1A1408 methyltransferase, NpmA, found in a clinically isolated Escherichia coli strain resistant to structurally diverse aminoglycosides”. Antimicrob. Agents Chemother. 51: 4401-4409. PMID 17875999. 

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