Roles of streptomycin 6 -kinase and ribosomal affinity to streptomycin in self-protection of streptomycin producer

Summary In streptomycin (SM)-producing organisms, the lower affinity of ribosomes for SM gives rise to a lower susceptibility of protein synthesis to SM. But, even in a strain with considerably low affinity of ribosomes for SM, phosphorylation of SM in the cells by SM 6-kinase is necessary for the protein synthesis to be fully tolerant to SM.     

The nucleotide sequence of a streptomycin streptomycin phosphotransferase (streptomycin kinase) [corrected] gene from a streptomycin producer

The nucleotide sequence of the DNA fragment containing the streptomycin phosphotransferase (streptomycin kinase) [corrected] gene from the streptomycin-producer Streptomyces griseus strain HUT 6037 was determined. Analysis of the sequence revealed an open reading frame which could encode 325 amino acid residues. A biased codon usage pattern, reflecting the high G + C composition (approximately 74%) of Streptomyces DNA, was observed in the gene.