title: Isolation of protein initiation factors from 30S ribosomal subunits.
mesh_terms: D002499:Centrifugation, Density Gradient; D002850:Chromatography, Gel; D002852:Chromatography, Ion Exchange; D004926:Escherichia coli; D014176:Protein Biosynthesis; D012270:Ribosomes / Q000378:metabolism*