title: Differential expression of two members of Rv1922-LipD operon in Mycobacterium tuberculosis: Does rv1923 qualify for membership?
abstract: rv1922 and rv1923 (lipD) are members of Rv1922-LipD operon in the genome of Mycobacterium tuberculosis. rv1922 was expressed under aerobic and stress conditions, whereas rv1923 was not expressed in aerobically grown bacteria but expressed moderately under oxidative stress conditions. Different expression of both the operonic genes under normal and stress conditions posed apprehensions for the inclusion of rv1922 and rv1923 in the same operon. The results from this study indicated that although the genes were expressed in an operonic manner, there existed the possibility of differential regulation for rv1923 which has been supported by in silico analysis for the presence of putative internal regulatory sites in the operon.
authors: Department of Biotechnology, Panjab University, BMS Block, Sec-25, Chandigarh, UT 160014, India.
authors: Nandita
authors: N
authors: Dogra
authors: Department of Biotechnology, Panjab University, BMS Block, Sec-25, Chandigarh, UT 160014, India.
authors: Stuti
authors: S
authors: Arya
authors: Department of Biotechnology, Panjab University, BMS Block, Sec-25, Chandigarh, UT 160014, India.
authors: Kashmir
authors: K
authors: Singh
authors: Department of Biotechnology, Panjab University, BMS Block, Sec-25, Chandigarh, UT 160014, India jagsekhon@yahoo.com.
authors: Jagdeep
authors: J
authors: Kaur
mesh_terms: D000332:Aerobiosis; D001426:Bacterial Proteins / Q000096:biosynthesis* / Q000235:genetics; D019295:Computational Biology; D015964:Gene Expression Regulation, Bacterial; D005798:Genes, Bacterial; D009169:Mycobacterium tuberculosis / Q000235:genetics*; D009876:Operon; D018384:Oxidative Stress; D012045:Regulatory Sequences, Nucleic Acid
chemical_list: D001426:Bacterial Proteins
keywords: gene expression; lipases; promoter; stress