Table 1. Summary of the mitochondrial translation factors studied, including the bacterial homologs and mutant phenotypes.

Mitochondrial translation factors	Bacterial homologs	% identity S. cerevisiae/E. coli	S. cerevisiae mutants used in this study	% rho- 28°C
Ifm1	IF2	33	Δifm1	20 ± 10
Mif3/Aim23	IF3	<20	Δmif3	<5
Rrf1	RRF	20	Δrrf1	<5
Mrf1	RF1	35	Δmrf1	100
			mrf1 (R231G)	20 ± 10
Mef2	EF-G	29	Δmef2	100
			mef2 (K54A)	10 ± 5
Nam2	LeuRS	32	Δnam2	100
			nam2 (W238C)	<5