Conserved protein; Involved in a F420-dependent anti-oxidant mechanism that protects M.tuberculosis against oxidative stress and bactericidal agents. Catalyzes the F420H(2)-dependent two-electron reduction of quinones to dihydroquinones, thereby preventing the formation of cytotoxic semiquinones obtained by the one-electron reduction pathway. In vitro, catalyzes the reduction of menadione to menadiol; since menaquinone is the sole quinone electron carrier in the respiratory chain in M.tuberculosis, the physiological electron acceptor for Fqr- mediated F420H(2) oxidation is therefore li [...]

Rv0078, (MTV030.22), len: 201 aa. Probable transcriptional regulator. Contains probable helix-turn-helix motif from aa 35 to 56 (Score 1348, +3.78 SD).

Probable oxidoreductase; Rv0077c, (MTV030.21c), len: 276 aa. Possible oxidoreductase, weakly similar to others from Streptomyces. Also similar to MTCY05A6_35 and MTCY1A11_10 from Mycobacterium tuberculosis. And shows some similarity in part with AAL17935.1|AY054120 putative epoxide hydrolase from Mycobacterium smegmatis (203 aa).

Rv3442c, (MTCY77.14c), len: 151 aa. rpsI, 30S ribosomal protein S9, equivalent to P40828|RS9_MYCLE|ML0365|B229_C2_191 30S ribosomal protein S9 (153 aa), FASTA scores: opt: 800, E(): 2.1e-42, (83.85% identity in 155 aa overlap). Also highly similar to others e.g. Q53875|RS9_STRCO|SC6G4.13 from Streptomyces coelicolor (170 aa), FASTA scores: opt: 533, E(): 5.7e-26, (60.75% identity in 135 aa overlap); Q9KGD4|RPSI|BH0169 (BS10) from Bacillus halodurans (130 aa), FASTA scores: opt: 469, E(): 3.8e-22, (58.65% identity in 121 aa overlap); Q9CDG7|RPSI from Lactococcus lactis (subsp. lactis) ( [...]

Rv1145, (MTCI65.12), len: 303 aa. Probable mmpL13a,conserved transmembrane transport protein (see citation below), member of RND superfamily, showing some similarity to putative Mycobacterial and Streptomyces membrane proteins e.g. MTCY987|g1781238 from Mycobacterium tuberculosis (962 aa), FASTA scores: opt: 213, E(): 1.9e-06, (28.0% identity in 296 aa overlap); etc. Strong similarity to U92075|MMU92075_5 hypothetical protein from Mycobacterium marinum (256 aa), FASTA scores: opt: 957,E(): 0, (57.6% identity in 257 aa overlap). Should continue as mmpL13B|Rv1146, but frameshift required [...]

Probable threonine dehydratase IlvA; Catalyzes the anaerobic formation of alpha-ketobutyrate and ammonia from threonine in a two-step reaction. The first step involved a dehydration of threonine and a production of enamine intermediates (aminocrotonate), which tautomerizes to its imine form (iminobutyrate). Both intermediates are unstable and short-lived. The second step is the nonenzymatic hydrolysis of the enamine/imine intermediates to form 2- ketobutyrate and free ammonia. In the low water environment of the cell, the second step is accelerated by RidA (By similarity).

Rv1556, (MTCY48.09c), len: 202 aa. Possible regulatory protein, similar to X86780|SHGCPIR2|g987088 orfY, regulator of antibiotic transport complexes from Streptomyces hygroscopicus (204 aa), FASTA score: opt: 251,E(): 1.7e-10, (33.8% identity in 201 aa overlap) and others.

Possible antitoxin VapB11; Antitoxin component of a type II toxin-antitoxin (TA) system. Upon expression in E.coli and M.smegmatis neutralizes the effect of cognate toxin VapC11.

Possible toxin VapC11; Toxic component of a type II toxin-antitoxin (TA) system. Acts as an RNase. Upon expression in E.coli and M.smegmatis inhibits translation, cell growth and colony formation. Its toxic effects on cell growth and colony formation are neutralized by coexpression with cognate antitoxin VapB11; the effect on translation has not been tested but is probably also neutralized.