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. 2009 Jun 22;53(9):3972–3980. doi: 10.1128/AAC.00723-09

FIG. 4.

FIG. 4.

RT-PCR analyses of the tryptophanyl-tRNA synthetase genes from indolmycin and chuangxinmycin-resistant Streptomyces species. (A) RT-PCR analyses of tryptophanyl-tRNA synthetase genes in S. avermitilis and S. coelicolor. The transcription of the trpRS1 homolog SAV4725 also is induced in S. avermitilis upon exposure to indolmycin. (B) RT-PCR analyses of tryptophanyl-tRNA synthetase genes in the streptomycin producer S. griseus NBRC 13350 and in the indolmycin producer S. griseus ATCC 12648. The transcription of these genes was not influenced by indolmycin.