A stringent factor activity associated with the 50 S ribosomal subunit of Bacillus stearothermophilus.

Bacillus/cytology,metabolism Bacterial Proteins/isolation & purification,metabolism Centrifugation, Zonal Chromatography, Gel Chromatography, Ion Exchange Deoxyribonucleases Escherichia coli/metabolism Guanine Nucleotides/biosynthesis Hydroxyapatites Kinetics Mutation Phenylalanine Phosphorus Radioisotopes Poly U/metabolism RNA, Transfer Ribosomes/metabolism Species Specificity Spectrophotometry, Ultraviolet

Bacterial Proteins Guanine Nucleotides Hydroxyapatites Phosphorus Radioisotopes Poly U Phenylalanine RNA, Transfer Deoxyribonucleases