Construction and characterization of an Escherichia coli mutant deficient in the metY gene encoding tRNA(f2Met): either tRNA(f1Met) or tRNA(f2Met) is required for cell growth.

Abstract excerpt

The Escherichia coli metY gene, encoding tRNA(f2Met), was split by the kanamycin-resistance-encoding gene. The resulting mutant exhibited the same growth rate as the wild type, indicating that tRNA(f2Met) is not indispensable as is the case with the metZ gene encoding tRNA(f1Met) [Kenri et al., Gene 103 (191) 31-36]. beta-Galactosidase was produced efficiently from the start codon AUG of the intact lacZ gene or a...

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