Translation initiation factor IF-1 MSKEDSFEMEGTVVDTLPNTMFRVELENGHVVTAHISGKMRKNYIRILTGDKVRVELTPYDLSKGRITYRAR IF1_PSEAE 72 infA PA2619 No specific function has so far been attributed to this initiation factor; however, it seems to stimulate more or less all the activities of the other two initiation factors, IF-2 and IF-3.