Site-specific methylation of 16S rRNA caused by pct, a pactamycin resistance determinant from the producing organism, Streptomyces pactum.

AUTOR(ES)

Ballesta, J P

RESUMO

Ribosomal resistance to pactamycin in clones of Streptomyces lividans containing DNA (pct) from Streptomyces pactum, the pactamycin producer, involves methylation of 16S RNA. The modified residue A-941 in S. lividans 16S rRNA (A-964 in the homologous Escherichia coli sequence) is converted to 1-methyladenosine, and the ribosomal ability to bind pactamycin is reduced or abolished.

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