Occurrence of initiation factor 2 in the postribosomal fraction and identification of an initiation inhibitor as elongation factor G.

Bacterial Proteins/biosynthesis Carbon Radioisotopes Chromatography, DEAE-Cellulose Chromatography, Ion Exchange Coliphages Escherichia coli/metabolism Guanosine Triphosphate Methionine/metabolism Peptide Elongation Factors/isolation & purification Peptide Initiation Factors/isolation & purification Phenylalanine/metabolism Phosphoric Monoester Hydrolases/metabolism Poly U Protein Biosynthesis/drug effects RNA, Messenger/metabolism RNA, Transfer/metabolism RNA, Viral/metabolism Ribosomes/metabolism Subcellular Fractions/metabolism Tritium

Bacterial Proteins Carbon Radioisotopes Peptide Elongation Factors Peptide Initiation Factors RNA, Messenger RNA, Viral Tritium Poly U Phenylalanine Guanosine Triphosphate RNA, Transfer Methionine Phosphoric Monoester Hydrolases