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Multiple sigma factor genes in Brevibacterium lactofermentum: characterization of sigA and sigB. 总被引:1,自引:1,他引:0
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Four rpoD hybridizing signals have been identified in the chromosome of Brevibacterium lactofermentum. Two rpoD-like genes, sigA and sigB, have been cloned and sequenced, and they encode principal sigma factors of the RNA polymerase. The deduced amino acid sequences of SigA and SigB showed very high similarities to those of Mycobacterium smegmatis MysA and MysB proteins, respectively, and also to those of HrdB proteins from different Streptomyces species. SigA and SigB maintain the conserved motifs of sigma 70-like principal sigma factors. sigB is closely linked to the dtxR gene (encoding a repressor of iron-regulated promoters homologous to the diphtheria toxin repressor from Corynebacterium diphtheriae. 相似文献
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Transcriptional organization and dynamic expression of the hbpCAD genes, which encode the first three enzymes for 2-hydroxybiphenyl degradation in Pseudomonas azelaica HBP1
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Jaspers MC Schmid A Sturme MH Goslings DA Kohler HP Roelof Van Der Meer J 《Journal of bacteriology》2001,183(1):270-279
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Expression of the Azotobacter vinelandii poly-beta-hydroxybutyrate biosynthetic phbBAC operon is driven by two overlapping promoters and is dependent on the transcriptional activator PhbR
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Peralta-Gil M Segura D Guzmán J Servín-González L Espín G 《Journal of bacteriology》2002,184(20):5672-5677
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