Toxin VapC15; Toxic component of a type II toxin-antitoxin (TA) system. Degrades total E.coli RNA, which is partially inhibited by cognate antitoxin VapB15. Upon expression in M.smegmatis inhibits colony formation, which is neutralized by coexpression with VapB15.

Transcriptional regulatory protein; NAD-dependent lysine deacetylase and desuccinylase that specifically removes acetyl and succinyl groups on target proteins. Modulates the activities of several proteins which are inactive in their acylated form (By similarity). Reactivates acetylated acetyl-CoA synthetase (ACS) through an NAD-dependent deacetylation. Is able to ADP-ribosylate itself.

Rv1395, (MTCY21B4.12), len: 344 aa. Transcriptional regulatory protein (see citation below), similar to many e.g. URER_PROMI|Q02458 urease operon transcriptional activator from Proteus mirabilis (293 aa), FASTA scores: E():1.5e-08, (41.7% identity in 84 aa overlap); YHIX_ECOLI|P37639 hypothetical transcriptional regulatory protein from Escherichia coli (274 aa), FASTA scores: opt: 238, E(): 3.5e-09, (27.3% identity in 249 aa overlap); and G296916|X68281 possible virulence-regulating protein from Mycobacterium tuberculosis (339 aa), FASTA scores: opt: 228, E(): 1.9e-08, (27.0% identity [...]

Possible antitoxin ParD1; Antitoxin component of a type II toxin-antitoxin (TA) system. Upon expression in E.coli neutralizes the effect of cognate toxin ParE1.

Rv3263, (MTCY71.03), len: 553 aa. Probable DNA methylase, equivalent to Q9CCK4|ML0756 probable DNA methylase from Mycobacterium leprae (555 aa), FASTA scores: opt: 2980, E(): 2.1e-184, (81.9% identity in 541 aa overlap). Also similar to others e.g. P25240|MT57_ECOLI|ECO57IM modification methylase from Escherichia coli (544 aa), FASTA scores: opt: 595, E(): 1e-30, (30.35% identity in 507 aa overlap); P25201|MTA1_ACICA|ACCIM modification methylase ACCI from Acinetobacter calcoaceticus (540 aa), FASTA scores: opt: 366, E(): 5.7e-16, (23.35% identity in 467 aa overlap); Q56752|M-ACCI ACCI [...]

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).

Possible toxin VapC30. Contains PIN domain; Toxic component of a type II toxin-antitoxin (TA) system. An RNase (By similarity). Upon expression in M.smegmatis inhibits colony formation. Its toxic effect is neutralized by coexpression with cognate antitoxin VapB30.; Belongs to the PINc/VapC protein family.

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).

Probable transcriptional regulatory protein (possibly TetR-family); Rv0158, (MTV032.01), len: 214 aa. Probable transcriptional regulator, possibly TetR family, showing weak similarity to various transcriptional activators and repressors e.g. P32398|YIXD_BACSU|YHGD hypothetical transcriptional regulatory protein from Bacillus subtilis (191 aa), FASTA scores: opt:172, E(): 2.4e-05, (23.0% identity in 191 aa overlap). Contains helix-turn-helix motif at aa 32-53 (Score 1296, +3.60 SD). Could belong to the TetR/AcrR family of transcriptional regulators.