translation programmed by ms2 or f2am3 rna does not occur using ribosomes , precharged aminoacyl-trnas , and the sum of the purified proteins involved in initiation ( initiation factors ; if-1 , if-2 , and if-3 ) , propagation ( elongation factors ; ef-tu , ef-ts , and ef-g ) and termination ( release factors ; rf-1 or rf-2 ) of protein synthesis .
C0035553
ribosomes
C0597295
protein synthesis