4ql5 is a 2 chain structure with sequence from Streptococcus pneumoniae TIGR4. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
IF1_STRPN 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 (By similarity).