Open AccessDifferential expression of two members of Rv1922-LipD operon in Mycobacterium tuberculosis: Does rv1923 qualify for membership?
Author(s) -
Nandita Dogra,
Stuti Arya,
Kashmir Singh,
Jagdeep Kaur
Publication year - 2015
Publication title -
pathogens and disease
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.983
H-Index - 105
ISSN - 2049-632X
DOI - 10.1093/femspd/ftv029
Subject(s) - operon , biology , gene , in silico , mycobacterium tuberculosis , genome , genetics , bacteria , tuberculosis , microbiology and biotechnology , escherichia coli , medicine , pathology
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.
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