title: [Phenotypic expression of a 100-pair nucleotide deletion in the regulatory region of the Bacillus subtilis riboflavin operon].
abstract: Assessment of specific activity of riboflavin synthase and the level of riboflavin accumulation in strains with a 110-nucleotide deletion in the regulatory region of the riboflavin operon showed that this deletion specified semi-constitutive expression of the operon. This was assumed to be connected with the elimination of three nucleotides from a potential transcription antiterminator.
authors.forename: R A
authors.initials: RA
authors.lastname: Kreneva
authors.forename: I I
authors.initials: II
authors.lastname: Gusarov
authors.forename: Iu I
authors.initials: IuI
authors.lastname: Kozlov
authors.forename: D A
authors.initials: DA
authors.lastname: Perumov
mesh_terms: D000595:Amino Acid Sequence; D001412:Bacillus subtilis / Q000201:enzymology / Q000235:genetics*; D001483:Base Sequence; D004269:DNA, Bacterial; D008969:Molecular Sequence Data; D009876:Operon; D010641:Phenotype; D012045:Regulatory Sequences, Nucleic Acid / Q000235:genetics*; D012256:Riboflavin / Q000235:genetics*; D012258:Riboflavin Synthase / Q000378:metabolism; D017384:Sequence Deletion; D014158:Transcription, Genetic / Q000235:genetics
chemical_list: D004269:DNA, Bacterial; D012258:Riboflavin Synthase; D012256:Riboflavin