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| | mce3R | Probable transcriptional repressor (probably TetR-family) Mce3R; Mce3R represses the transcription of mce3 operon and downregulates its own expression, but does not affect the transcription of mce1, mce2 and mce4 operons. (406 aa) |
| | lysG | Probable transcriptional regulatory protein (probably LysR-family); Positively regulates the expression of the exporter LysE and represses its own expression. Activity requires the presence of a coinducer, lysine or histidine. Acts by binding to lysG-lysE promoter region. Also up-regulates the expression of ppsB, ppsC and ppsD, by binding to the upstream region of ppsB. (303 aa) |
| | Rv2011c | Rv2011c, (MTCY39.06), len: 143 aa. Conserved hypothetical protein, probable transcription repressor. Contains IPR011991 Winged helix-turn-helix transcription repressor DNA-binding domain. (143 aa) |
| | mazF7 | Possible toxin MazF7; Toxic component of a type II toxin-antitoxin (TA) system. Upon expression in E.coli and M.smegmatis inhibits cell growth and colony formation. Its toxic effect is neutralized by coexpression with cognate antitoxin MazE7. Probably an endoribonuclease (By similarity); Belongs to the PemK/MazF family. (136 aa) |
| | hrcA | Probable heat shock protein transcriptional repressor HrcA; Negative regulator of class I heat shock genes (grpE-dnaK- dnaJ and groELS operons). Prevents heat-shock induction of these operons; Belongs to the HrcA family. (343 aa) |
| | mraZ | Conserved protein; Rv2166c, (MTCY270.02), len: 143 aa. Conserved protein; shows strong similarity to several hypothetical bacterial proteins such as YLLB_BACSU P55343. Is equivalent to Mycobacterium leprae hypothetical protein ML0905 (143 aa, 92% identity) MLCB268.11c >sp|O69561|YL66_MYCLE hypothetical 16.1 KDA protein ML0905 >gi|3080482|emb|CAA18677.1|(AL022602) >gi|13092975|emb|CAC31286.1|(AL583920). FASTA scores: ML0905|ML0905 conserved hypothetical protein (143 aa) opt: 873, E(): 3.1e-52; 92.254% identity in 142 aa overlap; YLLB_BACSU P55343 hypothetical 16.6 kDa protein (143 aa) o [...] (143 aa) |
| | pknL | Probable transmembrane serine/threonine-protein kinase L PknL (protein kinase L) (STPK L); Phosphorylates the DNA-binding protein Rv2175c. May be involved in the regulation of cell division and cell envelope biosynthesis. (399 aa) |
| | ptpA | Phosphotyrosine protein phosphatase PtpA (protein-tyrosine-phosphatase) (PTPase) (LMW phosphatase); Mediates host-pathogen interaction and interferes with vesicular trafficking in the infected macrophage. Inhibits host phagolysosomal fusion in M.tuberculosis-infected macrophages to promote bacteria survival. Dephosphorylates host VPS33B protein, which induces a block of the host phagosome maturation within macrophage cells. Acts on tyrosine phosphorylated proteins, low-MW aryl phosphates and natural and synthetic acyl phosphates; Belongs to the low molecular weight phosphotyrosine prot [...] (163 aa) |
| | Rv3888c | Rv3888c, (MTCY15F10.24), len: 341 aa. Probable conserved membrane protein, showing similarity with hypothetical proteins from Mycobacterium leprae: O33082|MLCB628.11c (478 aa), FASTA scores: opt: 530, E(): 7.7e-26, (32.45% identity in 336 aa overlap); Q9CDD8|ML0048 (586 aa), FASTA scores: opt: 530, E(): 9.1e-26, (32.45% identity in 336 aa overlap); Q9CCI1|ML0798 (592 aa), FASTA scores: opt: 426, E(): 3e-19, (27.5% identity in 342 aa overlap) (similarity only at C-terminus). Also similar to proteins from Mycobacterium tuberculosis e.g. P96217|Rv3860|MTCY01A6.08c (390 aa), FASTA scores: [...] (341 aa) |
| | espI | ESX-1 secretion-associated protein EspI. Conserved proline and alanine rich protein; Required to repress ESX-1-mediated secretion under low ATP conditions. This function requires the ATP-binding motif. (666 aa) |
| | Rv3860 | Conserved protein; Rv3860, (MTCY01A6.08c), len: 390 aa. Conserved protein, showing similarity with hypothetical proteins from Mycobacterium leprae e.g. Q9CDD8|ML0048 (586 aa), FASTA scores: opt: 484, E(): 5.5e-14, (29.95% identity in 407 aa overlap); O33082|MLCB628.11c (478 aa) FASTA scores: opt: 484, E(): 4.8e-14, (29.95% identity in 407 aa overlap); etc. Also some similarity with O86637|SC3C3.03c hypothetical 112.1 KDA protein from Streptomyces coelicolor(1083 aa), FASTA scores: opt: 483, E(): 9.6e-14,(30.45% identity in 404 aa overlap). And some similarity with other proteins from M [...] (390 aa) |
| | ethR | Transcriptional regulatory repressor protein (TetR-family) EthR; Involved in the repression of the monooxygenase EthA which is responsible of the formation of the active metabolite of ethionamide (ETH). (216 aa) |
| | whiB4 | Probable transcriptional regulatory protein WhiB-like WhiB4; Redox-responsive transcriptional regulator that regulates a set of genes involved in protection against environmental stresses encountered during infection. The loss of the O(2) and NO-responsive 4Fe-4S cluster and subsequent redox modifications of Cys residue thiols (possibly by disulfide bond formation) may activate its role in gene regulation. The thiol-oxidized apo-form binds in a sequence non- specific manner to GC-rich DNA, probably in the minor groove. Represses transcription of a number of genes including itself. The [...] (118 aa) |
| | crp | Transcriptional regulatory protein Crp (Crp/Fnr-family); Global transcriptional regulator that complexes with cAMP and binds to specific DNA promoter sites, causing DNA-bending, to regulate transcription. cAMP improves binding to specific DNA sequences, probably by altering protein conformation. The CRP regulon is predicted to contain about 115 genes. Some genes are activated by CRP (rpfA, whiB1) while others are repressed (fadD10). There are 2 CRP-binding sites in the promoter of whiB1, at low concentrations of CRP with or without cAMP transcription of whiB1 is enhanced via site CRP1, [...] (224 aa) |
| | Rv3660c | Conserved hypothetical protein; May play a role in septum formation. (350 aa) |
| | Rv3655c | Conserved hypothetical protein; Effector protein that participates in the suppression of macrophage apoptosis by blocking the extrinsic pathway. Interferes with caspase-8 activation and binds to the host E3 ubiquitin-protein ligase RNF213, whose fusion partners have anti-apoptotic function. (125 aa) |
| | Rv3654c | Conserved hypothetical protein; Effector protein that participates in the suppression of macrophage apoptosis by blocking the extrinsic pathway. Recognizes the host polypyrimidine tract binding protein-associated splicing factor (PSF), which probably leads to its cleavage, diminishing the level of caspase-8 in macrophages. (84 aa) |
| | cspA | Rv3648c, (MTCY15C10.04), len: 67 aa. Probable cspA,cold shock protein A, identical to O69550|CSPB|CSPA|ML0198 small cold-shock protein from Mycobacterium leprae (67 aa) FASTA scores: opt: 451, E(): 3.7e-27, (97.0% identity in 67 aa overlap). Also highly similar to many e.g. Q9KGW0|CSPA from Mycobacterium smegmatis (67 aa) FASTA scores: opt: 439, E(): 2.9e-26, (92.55% identity in 67 aa overlap); P54584|CSP_ARTGO from Arthrobacter globiformis (67 aa),FASTA scores: opt: 335, E(): 1.5e-18, (73.45% identity in 64 aa overlap); O30875|CSPA_MICLU from Micrococcus luteus (Micrococcus lysodeikti [...] (67 aa) |
| | topA | DNA topoisomerase 1; Releases the supercoiling and torsional tension of DNA, which is introduced during the DNA replication and transcription, by transiently cleaving and rejoining one strand of the DNA duplex. Introduces a single-strand break via transesterification at a target site in duplex DNA. The scissile phosphodiester is attacked by the catalytic tyrosine of the enzyme, resulting in the formation of a DNA-(5'-phosphotyrosyl)-enzyme intermediate and the expulsion of a 3'-OH DNA strand. The free DNA strand then undergoes passage around the unbroken strand, thus removing DNA super [...] (934 aa) |
| | rplM | 50S ribosomal protein L13 RplM; This protein is one of the early assembly proteins of the 50S ribosomal subunit, although it is not seen to bind rRNA by itself. It is important during the early stages of 50S assembly. (147 aa) |
| | whiB3 | Transcriptional regulatory protein WhiB-like WhiB3. Contains [4FE-4S] cluster; A redox-sensitive transcriptional regulator. Maintains intracellular redox homeostasis by regulating catabolic metabolism and polyketide biosynthesis. Regulates expression of the redox buffer ergothioneine (ERG) in a carbon-source- dependent manner; loss of ERG or mycothiol (MSH, the other major redox buffer in this bacteria) leads to respiratory alterations and bioenergetic deficiencies that negatively impact virulence. In response to low external pH (like that found in host macrophage phagosomes) alters en [...] (102 aa) |
| | vapC47 | Possible toxin VapC47. Contains PIN domain; Toxic component of a type II toxin-antitoxin (TA) system. An RNase (By similarity). Upon expression in M.smegmatis inhibits translation and colony formation. Its toxic effect on colony formation is neutralized by coexpression with cognate antitoxin VapB47; the effect on translation has not been tested but is probably neutralized also.; Belongs to the PINc/VapC protein family. (136 aa) |
| | relK | Toxin RelK; Toxic component of a type II toxin-antitoxin (TA) system. Has RNase activity and preferentially cleaves at the 3'-end of purine ribonucleotides (By similarity). Overexpression in M.tuberculosis or M.smegmatis inhibits colony formation in a bacteriostatic rather than bacteriocidal fashion. Its toxic effect is neutralized by coexpression with antitoxin RelJ (shown only for M.smegmatis). Overexpression also increases the number of rifampcin-tolerant persister cells. Belongs to the YoeB family. (85 aa) |
| | phoY1 | Probable phosphate-transport system transcriptional regulatory protein PhoU homolog 1 PhoY1; Plays a role in the regulation of phosphate uptake. In this role, it may bind, possibly as a chaperone, to PhoR, PhoP or a PhoR- PhoP complex to promote dephosphorylation of phospho-PhoP, or inhibit formation of the PhoR-PhoP transitory complex (By similarity). (221 aa) |
| | rsbW | Anti-sigma factor RsbW (sigma negative effector); A cognate anti-sigma factor for alternative sigma factor SigF. Alternative sigma factors are held in an inactive form by an anti-sigma factor. Binds ATP and GTP, may hydrolyze both. (145 aa) |
| | whiB2 | Probable transcriptional regulatory protein WhiB-like WhiB2; Acts as a transcriptional regulator. Probably redox- responsive. The apo- but not holo-form probably binds DNA (By similarity). (89 aa) |
| | hpf | Conserved protein; Required for dimerization of active 70S ribosomes into 100S ribosomes in stationary phase; 100S ribosomes are translationally inactive and sometimes present during exponential growth. (214 aa) |
| | rshA | Anti-sigma factor RshA; An redox-regulated anti-sigma factor for extracytoplasmic function (ECF) sigma factor SigH. ECF sigma factors are held in an inactive form by a cognate anti-sigma factor. RshA and some peptides derived from it inhibit the sigma factor activity of SigH. Probably releases SigH during oxidative stress. (101 aa) |
| | whiB1 | Transcriptional regulatory protein WhiB-like WhiB1. Contains [4FE-4S]2+ cluster; Acts as a transcriptional repressor, inhibiting expression in vitro. Probably redox-responsive. The apo- but not holo-form binds to its own promoter as well as that of groEL2. Oxidized apo-form and nitrosylated holo-form also bind DNA. The apo-form has been shown to act as a protein disulfide reductase , but also not to act as a protein disulfide reductase. (84 aa) |
| | whiB7 | Probable transcriptional regulatory protein WhiB-like WhiB7; The apo- but not holo-form probably binds DNA (By similarity). Acts as a transcriptional regulator. Probably redox- responsive. Upon overproduction at least 10 other genes are up- regulated, among them are Rv1258c, Rv1988, Rv2301, Rv2416c, Rv2725c and whiB7 itself. Probably redox-responsive. The apo-form has been shown to act as a protein disulfide reductase. (92 aa) |
| | nuoG | Probable NADH dehydrogenase I (chain G) NuoG (NADH-ubiquinone oxidoreductase chain G); NDH-1 shuttles electrons from NADH, via FMN and iron-sulfur (Fe-S) centers, to quinones in the respiratory chain. The immediate electron acceptor for the enzyme in this species is believed to be menaquinone. Couples the redox reaction to proton translocation (for every two electrons transferred, four hydrogen ions are translocated across the cytoplasmic membrane), and thus conserves the redox energy in a proton gradient (By similarity). (806 aa) |
| | Rv2989 | Rv2989, (MTV012.03), len: 233 aa. Probable transcriptional regulator (ala-rich protein), highly similar to O86533|SC1C2.33c putative transcriptional regulator from Streptomyces coelicolor (238 aa), FASTA scores: opt: 711, E(): 2.3e-38, (53.05% identity in 230 aa overlap); and similar to others e.g. Q9KND6 putative transcriptional regulator from Vibrio cholerae (244 aa),FASTA scores: opt: 232, E(): 1.2e-07, (29.75% identity in 232 aa overlap); Q9R9U0|SRPS efflux pump regulator from Pseudomonas putida (259 aa), FASTA scores: opt: 224, E(): 4.1e-07, (28.35% identity in 247 aa overlap); et [...] (233 aa) |
| | relG | Toxin RelG; Toxic component of a type II toxin-antitoxin (TA) system. Has RNase activity and preferentially cleaves at the 3'-end of purine ribonucleotides (By similarity). Overexpression in M.tuberculosis or M.smegmatis inhibits colony formation in a bacteriostatic rather than bacteriocidal fashion. Its toxic effect is neutralized by coexpression with cognate antitoxin RelB2 (shown only for M.smegmatis). Overexpression also increases the number of gentamicin-tolerant and levofloxacin-tolerant persister cells. (87 aa) |
| | vapC22 | Possible toxin VapC22; Toxic component of a type II toxin-antitoxin (TA) system. An RNase (By similarity). Upon expression in M.smegmatis inhibits translation and colony formation. Its toxic effect on colony formation is neutralized by coexpression with cognate antitoxin VapB22; the effect on translation has not been tested but is probably neutralized also. (130 aa) |
| | sirR | Rv2788, (MTV002.53), len: 228 aa. Probable sirR,transcriptional repressor, highly similar to others e.g. Q9RRF3|DR2539 putative iron dependent repressor from Deinococcus radiodurans (232 aa), FASTA scores: opt: 518,E(): 4.5e-26, (41.2% identity in 221 aa overlap); Q9HRU8|SIRR|VNG0536G from Halobacterium sp. strain NRC-1 (233 aa), FASTA scores: opt: 516, E(): 6.1e-26, (40.45% identity in 220 aa overlap); Q9KIJ2|SLOR regulator SLOR from Streptococcus mutans (217 aa), FASTA scores: opt: 418,E(): 1.2e-19, (36.15% identity in 213 aa overlap); etc. Also some similarity to Q50495|IDER_MYCTU|M [...] (228 aa) |
| | Rv2787 | Rv2787, (MTV002.52), len: 587 aa. Conserved hypothetical ala-rich protein, equivalent to Q9CCI1|ML0798 hypothetical protein from Mycobacterium leprae (592 aa),FASTA scores: opt: 2994, E(): 6.9e-179, (76.5% identity in 587 aa overlap); and similar in part to other proteins from Mycobacterium leprae e.g. O33082|MLCB628.11 hypothetical 52.0 KDA protein (478 aa), FASTA scores: opt: 481, E(): 2.3e-22, (30.95% identity in 294 aa overlap). Also similar in part to O86637|SC3C3.03c hypothetical 112.1 KDA protein from Streptomyces coelicolor (1083 aa), FASTA scores: opt: 488, E(): 1.5e-22, (28.9 [...] (587 aa) |
| | lexA | Repressor LexA; Represses a number of genes involved in the response to DNA damage (SOS response), including recA and lexA. Has been shown to bind to the 14 bp palindromic sequence 5'-CGAACNNNNGTTCG-3'. In the presence of single-stranded DNA, RecA interacts with LexA causing an autocatalytic cleavage which disrupts the DNA-binding part of LexA, leading to derepression of the SOS regulon and eventually DNA repair. (236 aa) |
| | nrdR | Probable transcriptional regulatory protein NrdR; Negatively regulates transcription of bacterial ribonucleotide reductase nrd genes and operons by binding to NrdR- boxes; Belongs to the NrdR family. (154 aa) |
| | ideR | Iron-dependent repressor and activator IdeR; Metal-dependent DNA-binding protein that controls transcription of many genes involved in iron metabolism. Acts as a repressor of siderophore biosynthesis and as a positive modulator of iron storage. Also regulates expression of transporters, proteins involved in siderophore synthesis, iron storage and transcriptional regulators. (230 aa) |
| | ettA | Probable macrolide-transport ATP-binding protein ABC transporter; A translation factor that gates the progression of the 70S ribosomal initiation complex (IC, containing tRNA(fMet) in the P-site) into the translation elongation cycle by using a mechanism sensitive to the ATP/ADP ratio. Binds to the 70S ribosome E-site where it modulates the state of the translating ribosome during subunit translocation. ATP hydrolysis probably frees it from the ribosome, which can enter the elongation phase. (558 aa) |
| | clpX | Probable ATP-dependent CLP protease ATP-binding subunit ClpX; ATP-dependent specificity component of the Clp protease. It directs the protease to specific substrates. Can perform chaperone functions in the absence of ClpP (By similarity). Degrades anti-sigma-D factor RsdA when present in a complex with ClpP1 and ClpP2. Does not seem to act on anti-sigma-L factor RslA. (426 aa) |
| | rsfS | Conserved hypothetical protein; Functions as a ribosomal silencing factor. Interacts with ribosomal protein L14 (rplN), blocking formation of intersubunit bridge B8. Prevents association of the 30S and 50S ribosomal subunits and the formation of functional ribosomes, thus repressing translation. Belongs to the Iojap/RsfS family. (126 aa) |
| | eis | Enhanced intracellular survival protein Eis,GCN5-related N-acetyltransferase; Effector that is released into the host cell and affects host immune responses; it negatively modulates inflammation, macrophage autophagy, and cell death through redox-dependent signaling. Acts as an acetyltransferase. Acetylates 'Lys-55' of dual-specificity protein phosphatase 16 (DUSP16)/mitogen-activated protein kinase phosphatase-7 (MKP-7), a JNK- specific phosphatase; this leads to the inhibition of JNK-dependent autophagy, phagosome maturation, and ROS (reactive oxygen species) generation for enhanced [...] (402 aa) |
| | zur | Probable zinc uptake regulation protein Zur; Global transcriptional regulator involved in zinc homeostasis. Represses the transcription of at least 32 genes, including genes involved in zinc homeostasis, by binding to promoter sequences that contain a conserved 26 bp palindrome, in the presence of zinc; Belongs to the Fur family. (130 aa) |
| | pknB | Transmembrane serine/threonine-protein kinase B PknB (protein kinase B) (STPK B); Protein kinase that regulates many aspects of mycobacterial physiology, and is critical for growth in vitro and survival of the pathogen in the host. Is a key component of a signal transduction pathway that regulates cell growth, cell shape and cell division via phosphorylation of target proteins such as GarA, GlmU, PapA5, PbpA, FhaB (Rv0019c), FhaA (Rv0020c), MviN, PstP, EmbR, Rv1422, Rv1747 and RseA. Also catalyzes the phosphorylation of the core proteasome alpha-subunit (PrcA), and thereby regulates th [...] (626 aa) |
| | pknA | Transmembrane serine/threonine-protein kinase A PknA (protein kinase A) (STPK A); Protein kinase that regulates many aspects of mycobacterial physiology, and is critical for growth in vitro and survival of the pathogen in the host. Is a key component of a signal transduction pathway that regulates cell growth, cell shape and cell division via phosphorylation of target proteins such as FtsZ, Wag31, GlmU, FhaB, PstP, EmbR and Rv1422. Also catalyzes the phosphorylation of the proteasome alpha-subunit (PrcA) and unprocessed proteasome beta-subunit (pre-PrcB), which results in the inhibitio [...] (431 aa) |
| | pstP | Phosphoserine/threonine phosphatase PstP; The only predicted protein phosphatase in M.tuberculosis, it dephosphorylates at least 5 protein kinases (PknA, PknB, PknD, PknE and PknF) and the penicillin-binding protein PBPA. (514 aa) |
| | Rv0079 | Unknown protein; Involved in translation regulation. Inhibits protein synthesis and decreases bacterial growth when expressed in E.coli. Can also stimulate macrophages and peripheral blood mononuclear cells (PBMC) to secrete important cytokines that may be significant in granuloma formation and its maintenance. Increases secretion of IFN-gamma, TNF-alpha, IL-1 beta and IL-8 through human Toll-like receptor 2 (TLR2) signaling pathway. (273 aa) |
| | ricR | Conserved protein; Under low copper conditions, represses the expression of lpqS, Rv2963, mymT, socA, socB, mmcO and its own expression. In the presence of copper, RicR dissociates from DNA, leading to the expression of the target genes. Members of the RicR regulon are important for copper resistance during infections and full virulence in a mouse model of infection. (96 aa) |
| | vapB2 | Possible antitoxin VapB2; Antitoxin component of a type II toxin-antitoxin (TA) system. Upon expression in M.smegmatis neutralizes the effect of cognate toxin VapC2. The C-terminal helix of the antitoxin may obstruct the toxin's RNA-binding groove, blocking access to the active sites. Additionally, the C-terminal arginine of the antitoxin may remove Mg(2+) ions from the toxin active sites. (73 aa) |
| | vapC2 | Possible toxin VapC2; Toxic component of a type II toxin-antitoxin (TA) system. Acts as an RNase. Upon expression in M.smegmatis inhibits translation, growth and colony formation. All its toxic effects are neutralized by coexpression with cognate antitoxin VapB2. (141 aa) |
| | hspR | Rv0353, (MTCY13E10.13), len: 126 aa. Probable hspR,heat shock regulatory protein (see Stewart et al., 2001),merR family, highly similar to others e.g. HspR|P40183 heat shock regulatory protein from Streptomyces coelicolor (151 aa), FASTA scores: E(): 4.9e-22, (55.7% identity in 140 aa overlap), that binds to three inverted repeats (IR1-IR3) in the promoter region of the dnaK operon. Has possible coiled coil region in C-terminal half. Belongs to the MerR family of transcriptional regulators. (126 aa) |
| | rskA | Anti-sigma factor RskA (regulator of sigma K); An anti-sigma factor for extracytoplasmic function (ECF) sigma factor SigK. ECF sigma factors are held in an inactive form by an anti-sigma factor until released by regulated intramembrane proteolysis (RIP). RIP occurs when an extracytoplasmic signal triggers a concerted proteolytic cascade to transmit information and elicit cellular responses. The membrane-spanning regulatory substrate protein is first cut extracytoplasmically (site-1 protease, S1P), then within the membrane itself (site-2 protease, S2P, Rip1), while cytoplasmic proteases [...] (232 aa) |
| | Rv0530 | Conserved protein; Rv0530, (MTCY25D10.09), len: 405 aa. Conserved protein, similar in part to other hypothetical proteins e.g. AL031231|SC3C3_3|CAA20252.1 from Streptomyces coelicolor (1083 aa), FASTA scores: opt: 870, E(): 0,(39.5% identity in 443 aa overlap); etc. Also similar to Mycobacterium tuberculosis proteins e.g. Rv3868, Rv0282,Rv1798, etc. (405 aa) |
| | mce2R | Probable transcriptional regulatory protein Mce2R (GntR-family); Negatively regulates the expression of its operon as well as expression of end (endonuclease 4). (240 aa) |
| | Rv0600c | Two component sensor kinase [second part]; Member of the three-protein two-component system HK1/HK2/TcrA. Kinase that binds ATP and catalyzes the transfer of a phosphoryl group from ATP to HK2. (168 aa) |
| | Rv0601c | Two component sensor kinase [first part]; Member of the three-protein two-component system HK1/HK2/TcrA. HK2 transfers its phosphoryl group to TcrA. (156 aa) |
| | tcrA | Two component DNA binding transcriptional regulatory protein TcrA; Member of the three-protein two-component system HK1/HK2/TcrA. (253 aa) |
| | rslA | Anti-sigma factor RslA; An anti-sigma factor for extracytoplasmic function (ECF) sigma factor SigL. ECF sigma factors are held in an inactive form by an anti-sigma factor until released by regulated intramembrane proteolysis (RIP). RIP occurs when an extracytoplasmic signal triggers a concerted proteolytic cascade to transmit information and elicit cellular responses. The membrane-spanning regulatory substrate protein is first cut extracytoplasmically (site-1 protease, S1P), then within the membrane itself (site-2 protease, S2P, Rip1), while cytoplasmic proteases finish degrading the r [...] (250 aa) |
| | phoP | Rv0757, (MTCY369.02), len: 247 aa. Possible phoP,two component system response phosphate regulon transcriptional regulator (see citations below), highly similar to various transcriptional regulators e.g. CAC32360.1|AL583945 putative two component system response regulator from Streptomyces coelicolor (271 aa); T45446 probable two-component response regulator from Mycobacterium leprae (253 aa); and similar to phoP proteins e.g. P13792|PHOP_BACSU alkaline phosphatase synthesis transcription regulatory protein from Bacillus subtilis (240 aa), FASTA scores: opt: 594, E(): 2.3e-33, (41.0% i [...] (247 aa) |
| | Rv0792c | Probable transcriptional regulatory protein (probably GntR-family); Rv0792c, (MTV042.02c), len: 269 aa. Probable transcriptional regulator, GntR-family, similar to many others of GntR family e.g. BSUB0018_189|Z99121 from Bacillus subtilis (243 aa), FASTA scores: opt: 367, E(): 1.5e-17, (32.1% identity in 246 aa overlap); P31453|YIDP_ECOLI from Escherichia coli (238 aa), FASTA scores: opt: 236, E(): 8.8e-09, (26.4% identity in 235 aa overlap); etc. (269 aa) |
| | phoY2 | Probable phosphate-transport system transcriptional regulatory protein PhoY2; Plays a role in the regulation of phosphate uptake. In this role, it may bind, possibly as a chaperone, to PhoR, PhoP or a PhoR- PhoP complex to promote dephosphorylation of phospho-PhoP, or inhibit formation of the PhoR-PhoP transitory complex (By similarity). Important for tolerance to antibiotics. (213 aa) |
| | cspB | Rv0871, (MTV043.64), len: 135 aa. Probable cspB,cold shock-like protein B, equivalent to Z99494|MLCB57_7|MLCB57.11 probable cold shock protein from Mycobacterium leprae (136 aa), FASTA scores: opt: 787, E(): 0, (86.0% identity in 136 aa overlap). Also highly similar (but often longer than) to others e.g. CAB93399.1|AL357524 cold shock protein B from Streptomyces coelicolor (127 aa); Q45099|CSPD_BACCE cold shock-like protein CSPD from Bacillus cereus (66 aa); Y101 81|LLCSPB_1 cold shock protein from Lactococcus lactis (66 aa), FASTA scores: opt: 220, E(): 2.5e-07, (48.3% identity in 60 [...] (135 aa) |
| | pknD | Transmembrane serine/threonine-protein kinase D PknD (protein kinase D) (STPK D); Key microbial factor required for central nervous system tuberculosis. Required for invasion of host brain endothelia, but not macrophages, lung epithelia or other endothelia. Phosphorylates the anti-anti-sigma factor homolog Rv0516c, which inhibits binding of Rv0516c to Rv2638, another anti-anti-sigma factor. Can also phosphorylate the FHA domain of Rv1747. (664 aa) |
| | uvrD1 | Probable ATP-dependent DNA helicase II UvrD1; DNA-dependent ATPase, acting on dsDNA with a 3'-ssDNA tail, unwinding with 3'-to 5'-polarity. A minimal tail of 18 nt is required for activity. Also highly efficient on nicked DNA. Involved in the post-incision events of nucleotide excision repair, as well as in nitrosative and oxidative stress response and possibly in persistence in the host. Inhibits RecA-mediated DNA strand exchange; this does not require ATPase activity. When combined with UvrA greatly inhibits RecA- mediated DNA strand exchange; Belongs to the helicase family. UvrD sub [...] (771 aa) |
| | csoR | Copper-sensitive operon repressor CsoR; Copper-sensitive repressor that has a key role in copper homeostasis. It is part of the cso operon involved in the cellular response to increasing concentrations of copper inside the bacterium, which can be highly toxic. In the presence of copper, CsoR fully dissociates from the promoter in the cso operon, leading to the transcription of its genes. Binds to a GC-rich pseudopallindromic sequence, 5'-GTAGCCCACCCCCAGTGGGGTGGGA-3', in the cso promoter region. (119 aa) |
| | mprA | Response regulator MprA; Member of the two-component regulatory system MprB/MprA which contributes to maintaining a balance among several systems involved in stress resistance and is required for establishment and maintenance of persistent infection in the host. Functions as a transcriptional regulator that recognizes a 19-bp nucleotide motif comprizing two loosely conserved 8-bp direct DNA-binding motif repeats separated by a 3-bp spacer region. MprB/MprA is involved in regulation of numerous stress-responsive genes, including up-regulation of two sigma factors, sigE and sigB as well [...] (228 aa) |
| | mazF3 | Toxin MazF3; Toxic component of a type II toxin-antitoxin (TA) system. Acts as an mRNA and 23S rRNA interferase, cleaving predominantly after the first 2 Us in the sequence 5'-UUCCU-3'; in 23S rRNA only cleaves once in the ribosomal A site in dissociated but not intact ribosomes. Cleavage of 23S rRNA inhibits protein translation; the 23S rRNA region cleaved is involved in tRNA-binding in the A site, 30S and 50S subunit interaction and ribosome recycling factor association. Upon expression in E.coli and M.smegmatis inhibits cell growth and colony formation. It dramatically increases per [...] (103 aa) |
| | Rv1353c | Probable transcriptional regulatory protein; Negatively regulates the expression of the efflux pump Rv0191 upon chloramphenicol exposure. Acts by binding to the Rv0191 promoter region. (261 aa) |
| | 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. (134 aa) |
| | uvrA | Probable excinuclease ABC (subunit A-DNA-binding ATPase) UvrA; The UvrABC repair system catalyzes the recognition and processing of DNA lesions. UvrA is an ATPase and a DNA-binding protein. A damage recognition complex composed of 2 UvrA and 2 UvrB subunits scans DNA for abnormalities. When the presence of a lesion has been verified by UvrB, the UvrA molecules dissociate. Alone it slightly inhibits RecA-mediated DNA strand exchange, in concert with UvrD1 greatly inhibits RecA-mediated DNA strand exchange. Belongs to the ABC transporter superfamily. UvrA family. (972 aa) |
| | Rv1719 | Rv1719, (MTCY04C12.04), len: 259 aa. Probable transcriptional regulatory protein, similar to YIAJ_ECOLI|P37671 hypothetical transcriptional regulator from Escherichia coli (282 aa), FASTA scores: opt: 353,E(): 3.2e-15, (31.1% identity in 235 aa overlap). Similar to Mycobacterium tuberculosis hypothetical IclR-family transcriptional regulators Rv2989, Rv1773c. Helix-turn-helix motif from aa 34-55 (+6.94 SD). (259 aa) |
| | pknE | Probable transmembrane serine/threonine-protein kinase E PknE (protein kinase E) (STPK E); Important for survival of the bacterium in the host during infection. Promotes the survival of infected macrophages by activating multiple signaling responses and suppressing apoptosis of macrophages during nitrate stress. May contribute to the adaptation of M.tuberculosis during stress conditions by maintaining the cellular integrity. Can phosphorylate the FHA domain of Rv1747. Belongs to the protein kinase superfamily. Ser/Thr protein kinase family. (566 aa) |
| | Rv1766 | Conserved protein; Rv1766, (MTCY28.32), len: 89 aa. Conserved protein,highly similar to P54431|YRKD_BACSU Hypothetical 7.0 kDa protein in bltr-spoIIIC intergenic region from Bacillus subtilis (63 aa), FASTA scores: opt: 151, E(): 1.5e-05,(53.3% identity in 45 aa overlap). Also similar to Q9RD62|SCF56.04C|AL133424 Hypothetical protein from Streptomyces coelicolor (92 aa), FASTA scores: opt: 239,E(): 1.3e-11, (62.5% identity in 64 aa overlap). Also some similarity to other Mycobacterium tuberculosis hypothetical proteins e.g. O07434|Rv0190|MTCI28.29 (96 aa), (35.5% identity in 62 aa over [...] (89 aa) |
| | Rv1773c | Rv1773c, (MTCY28.39), len: 248 aa. Probable transcriptional regulator belonging to IclR family, similar to ICLR_ECOLI|P16528 acetate operon repressor from Escherichia coli (274 aa), FASTA scores: opt: 261, E(): 3.3e-10, (26.9% identity in 249 aa overlap). Also similar to Mycobacterium tuberculosis protein Rv1719|MTCY04C12.04 (40.2% identity in 244 aa overlap); and Rv2989. Start site chosen by homology, but may extend further upstream. Contains possible helix-turn-helix motif at aa 37-58 (+3.24 SD). (248 aa) |
| | garA | Conserved protein with FHA domain, GarA; Involved in regulation of glutamate metabolism. Acts as a phosphorylation-dependent molecular switch that modulates the activities of Kgd, Gdh and GltB. (162 aa) |
| | blaI | Transcriptional repressor BlaI; Transcription regulator that binds to an inverted DNA repeat with the consensus sequence 5'-TAC[GT]AC-NNNNN-GT[AC]GTA-3' and regulates genes involved in antibiotic transport, detoxification and cell wall function. Also regulates its own transcription. Binds DNA as a dimer; Belongs to the BlaI transcriptional regulatory family. (138 aa) |
| | furA | Ferric uptake regulation protein FurA (fur); Represses transcription of the catalase-peroxidase gene katG and its own transcription by binding to the promoter region in a redox- dependent manner; Belongs to the Fur family. (147 aa) |
| | higA | Possible antitoxin HigA; Antitoxin component of an atypical, type II toxin-antitoxin chaperone (TAC) system. Upon expression in M.smegmatis neutralizes the effect of cognate toxin HigB1. Neutralization of HigB1 toxin in E.coli or M.marinum also requires SecB-like chaperone Rv1957, making this the first toxin-antitoxin chaperone (TAC) system. Antitoxin aggregation and degradation are prevented by the chaperone. (149 aa) |
