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Mitochondrial translation normally requires formylation of the initiator tRNA‐met, a reaction catalyzed by the enzyme formyltransferase, Fmt1p and MTFMT in Saccharomyces cerevisiae and human mitochondria, respectively. Yeast fmt1 mutants devoid of Fmt1p, however, can synthesize all mitochondrial gene products by initiating translation with a non‐formylated methionyl‐tRNA. Yeast synthetic respiratory‐deficient...