title: Deoxyribonucleic acid-binding proteins in vegetative Bacillus subtilis: alterations caused by stage O sporulation mutations.
abstract: Deoxyribonucleic acid (DNA)-binding proteins have been compared between wild-type Bacillus subtilis and five sporulation mutants blocked at different stage O loci. Extracts from exponentially growing cells have been fractionated for proteins binding to single-stranded calf thymus DNA-cellulose and double-stranded B. subtilis DNA-cellulose. In nutrient broth, stage O mutations cause an accumulation of proteins with affinity for double-stranded DNA. Suppression of the mutation with extragenic suppressors relieves the accumulation. In minimal glucose medium, the stage O mutations also cause accumulation of proteins with affinity for double-stranded DNA, but the species accumulated are different from those of nutrient broth-grown cells. In neither case did stage O mutations affect proteins with affinity for single-stranded DNA. The results suggest that the products of stage O loci are functional and operative during vegetative growth.
mesh_terms: D001412:Bacillus subtilis / Q000254:growth & development / Q000378:metabolism*; D001426:Bacterial Proteins / Q000378:metabolism*; D003470:Culture Media; D004247:DNA / Q000378:metabolism*; D004269:DNA, Bacterial / Q000378:metabolism; D004277:DNA, Single-Stranded / Q000378:metabolism; D005947:Glucose / Q000378:metabolism; D008970:Molecular Weight; D009154:Mutation; D011485:Protein Binding; D013171:Spores, Bacterial / Q000254:growth & development; D013489:Suppression, Genetic
chemical_list: D001426:Bacterial Proteins; D003470:Culture Media; D004269:DNA, Bacterial; D004277:DNA, Single-Stranded; D004247:DNA; D005947:Glucose