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http://purl.uniprot.org/citations/1316937http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/1316937http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/1316937http://www.w3.org/2000/01/rdf-schema#comment"The nucleotide sequence of the proBA operon from a proline-hyperproducing mutant of Serratia marcescens was determined. Two base substitutions were found: one in the proB structural gene, coding for gamma-glutamyl kinase (GK), and a second one in the promoter region of the operon. The former base substitution led to a change of the predicted amino acid at position 117 from an alanine to a valine in GK. This mutation rendered GK 700-fold less sensitive to proline-mediated feedback inhibition than the wild-type enzyme. The other base substitution, a transversion from a G-C to an A-T, was located in the spacer region between the '-35' and '-10' sequences of the promoter, and it increased the transcriptional activity of this operon fourfold. Both these two base substitutions, which were acquired at the step of selecting mutants resistant to a toxic proline analogue, 3,4-dehydroproline, confer upon cells a high proline productivity and an increased osmotolerance."xsd:string
http://purl.uniprot.org/citations/1316937http://purl.org/dc/terms/identifier"doi:10.1099/00221287-138-4-693"xsd:string
http://purl.uniprot.org/citations/1316937http://purl.org/dc/terms/identifier"doi:10.1099/00221287-138-4-693"xsd:string
http://purl.uniprot.org/citations/1316937http://purl.uniprot.org/core/author"Imai Y."xsd:string
http://purl.uniprot.org/citations/1316937http://purl.uniprot.org/core/author"Imai Y."xsd:string
http://purl.uniprot.org/citations/1316937http://purl.uniprot.org/core/author"Suzuki S."xsd:string
http://purl.uniprot.org/citations/1316937http://purl.uniprot.org/core/author"Suzuki S."xsd:string
http://purl.uniprot.org/citations/1316937http://purl.uniprot.org/core/author"Komatsubara S."xsd:string
http://purl.uniprot.org/citations/1316937http://purl.uniprot.org/core/author"Komatsubara S."xsd:string
http://purl.uniprot.org/citations/1316937http://purl.uniprot.org/core/author"Omori K."xsd:string
http://purl.uniprot.org/citations/1316937http://purl.uniprot.org/core/author"Omori K."xsd:string
http://purl.uniprot.org/citations/1316937http://purl.uniprot.org/core/date"1992"xsd:gYear
http://purl.uniprot.org/citations/1316937http://purl.uniprot.org/core/date"1992"xsd:gYear
http://purl.uniprot.org/citations/1316937http://purl.uniprot.org/core/name"J. Gen. Microbiol."xsd:string
http://purl.uniprot.org/citations/1316937http://purl.uniprot.org/core/name"J. Gen. Microbiol."xsd:string
http://purl.uniprot.org/citations/1316937http://purl.uniprot.org/core/pages"693-699"xsd:string
http://purl.uniprot.org/citations/1316937http://purl.uniprot.org/core/pages"693-699"xsd:string
http://purl.uniprot.org/citations/1316937http://purl.uniprot.org/core/title"Analysis of the mutant proBA operon from a proline-producing strain of Serratia marcescens."xsd:string
http://purl.uniprot.org/citations/1316937http://purl.uniprot.org/core/title"Analysis of the mutant proBA operon from a proline-producing strain of Serratia marcescens."xsd:string
http://purl.uniprot.org/citations/1316937http://purl.uniprot.org/core/volume"138"xsd:string
http://purl.uniprot.org/citations/1316937http://purl.uniprot.org/core/volume"138"xsd:string
http://purl.uniprot.org/citations/1316937http://www.w3.org/2004/02/skos/core#exactMatchhttp://purl.uniprot.org/pubmed/1316937
http://purl.uniprot.org/citations/1316937http://www.w3.org/2004/02/skos/core#exactMatchhttp://purl.uniprot.org/pubmed/1316937