4mno is a 1 chain structure with sequence from Pyrococcus abyssi. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
IF1A_PYRAB Seems to be required for maximal rate of protein biosynthesis. Enhances ribosome dissociation into subunits and stabilizes the binding of the initiator Met-tRNA(I) to 40 S ribosomal subunits (By similarity).