Rv0238, (MTV034.04), len: 204 aa. Possible transcriptional regulatory protein, TetR family, equivalent to AL022486|MLCB1883_9|T44874 probable transcription regulator from Mycobacterium leprae (208 aa), FASTA scores: opt: 1029, E(): 0, (80.9% identity in 199 aa overlap). Also similar to others e.g. CAB77290.1|AL160312 putative TetR-family regulatory protein from Streptomyces coelicolor (240 aa). Also similar to Mycobacterium tuberculosis proteins Z95120|Rv3208 (228 aa), FASTA scores: opt: 266,E(): 8.3e-12, (28.1% identity in 196 aa overlap); and Rv1019 (197 aa).

Rv2761c, (MTV002.26c), len: 364 aa. Possible hsdS,type I restriction/modification system specificity determinant (S protein), similar in part to other hsdS protein (S proteins) e.g. Q9P9X9|XF2741 from Xylella fastidiosa (412 aa), FASTA scores: opt: 252, E(): 7.4e-09,(24.95% identity in 401 aa overlap); N-terminus of Q9RC12 type I S-subunit from Lactobacillus delbrueckii (subsp. lactis) (389 aa), FASTA scores: opt: 232, E(): 1.4e-07,(28.1% identity in 185 aa overlap); N-terminus of P72419|sty|SBLI from Salmonella typhimurium (434 aa), FASTA scores: opt: 221, E(): 8e-07, (28.45% identity [...]

Rv0273c, (MTV035.01c), len: 206 aa (start uncertain). Possible transcriptional regulator, showing some similarity to hypothetical regulators from Mycobacterium tuberculosis e.g. P96222|Rv3855|MTCY01A6.13c (216 aa); O08377|Rv1534|MTCY07A7A.03 (225 aa), FASTA scores: opt: 123, E(): 3.2e-06, (28.5% identity in 172 aa overlap).

Rv2762c, (MTV002.27c), len: 139 aa. Conserved hypothetical protein, similar to C-terminus of hypothetical proteins: Q9A380|CC3324 from Caulobacter crescentus (409 aa), FASTA scores: opt: 181, E(): 9.8e-05, (43.55% identity in 101 aa overlap); Q98KQ4|MLR1373 from Rhizobium loti (Mesorhizobium loti) (399 aa), FASTA scores: opt: 174, E(): 0.00028, (46.35% identity in 82 aa overlap); and Q9HZZ9|PA2844 from Pseudomonas aeruginosa (402 aa), FASTA scores: opt: 158, E(): 0.0033, (40.0% identity in 80 aa overlap).

Probable alternative RNA polymerase sigma factor (fragment) SigJ; Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. Extracytoplasmic function (ECF) sigma factors are held in an inactive form by an anti-sigma factor until released, although no anti- sigma factor is known for this protein (By similarity). Regulates the promoter of SigI, may not be autoregulated.

Conserved hypothetical protein; May have transcription regulation and metal-detoxifying functions through which it may enhance intracellular survival of mycobacteria. Binds to its own promoter region and to the Rv1999c promoter region. It displays strong affinity for cadmium ions, but can also bind zinc, manganese and nickel. Expression increases the intracellular survival of recombinant M. smegmatis in murine macrophage cell line and increases its tolerance to cadmium ions.

Rv0339c, (MTCY279.06c), len: 832 aa. Possible transcriptional regulator, showing very weak similarity with parts of others. Contains PS00017 ATP/GTP-binding site motif A (P-loop); and probable helix-turn helix motif from aa 778-799 (Score 1041, +2.73 SD).

Possible transcriptional regulatory protein; Putative antitoxin component of a type II toxin-antitoxin (TA) system. Its cognate toxin would be HigB3.

Rv1681, (MTCI125.03), len: 330 aa. Possible moeX,Molybdopterin biosynthesis protein, has weak similarity to MOAA_ECOLI|P30745 molybdenum cofactor biosynthesis protein (329 aa), FASTA scores: opt: 162, E(): 0.00081, (27.7% identity in 224 aa overlap) and to Rv3109|MTCY164.19 MoaA from Mycobacterium tuberculosis (28.5% identity in 165 aa overlap).