Reaction catalyzed by methionyl-tRNA formyltransferase (2.1.2.9)

		+		L-isoleucyl-tRNAfMet	=			+		N-formylisoleucyl-tRNAfMet
	10-formyltetrahydrofolate	+		L-isoleucyl-tRNAfMet	=		tetrahydrofolate	+		N-formylisoleucyl-tRNAfMet