Rv1471, (MTV007.18), len: 123 aa. Probable trxB1,thioredoxin, similar to many bacterial thioredoxins e.g. P33636|THI2_ECOLI from Escherichia coli (139 aa), FASTA scores: opt: 290, E(): 1.8e-13, (44.3% identity in 97 aa overlap); etc. Highly similar to Rv1470|TrxA probable thioredoxin from Mycobacterium tuberculosis (124 aa), FASTA scores: opt: 402, E(): 1.2e-32, (54.4% identity in 114 aa overlap). Contains PS00194 Thioredoxin family active site. Belongs to the thioredoxin family. Note that previously known as trxB.

Alkyl hydroperoxide reductase C protein AhpC (alkyl hydroperoxidase C); Thiol-specific peroxidase that catalyzes the reduction of hydrogen peroxide and organic hydroperoxides to water and alcohols, respectively. Plays a role in cell protection against oxidative stress by detoxifying peroxides. Together with AhpD, DlaT and Lpd, constitutes an NADH-dependent peroxidase active against hydrogen and alkyl peroxides as well as serving as a peroxynitrite reductase, thus protecting the bacterium against reactive nitrogen intermediates and oxidative stress generated by the host immune system. D [...]

Rv1470, (MTV007.17), len: 124 aa. Probable trxA,thioredoxin, similar to many e.g. P12243|THI1_SYNP7 thioredoxin 1 from Synechococcus sp. (106 aa), FASTA scores: opt: 201, E(): 9.2e-08, (35.4% identity in 99 aa overlap); etc. Highly similar to downstream ORF Rv1471|trxB1 probable thioredoxin from Mycobacterium tuberculosis (123 aa), FASTA scores: opt: 402, E(): 0,(54.4% identity in 114 aa overlap). Warning: note that Rv3914|MT4033|MTV028.05|trxC can be alternatively named trxA.

Probable cysteine desulfurase Csd; Catalyzes the removal of elemental sulfur and selenium atoms from L-cysteine, L-cystine, L-selenocysteine, and L-selenocystine to produce L-alanine; Belongs to the class-V pyridoxal-phosphate-dependent aminotransferase family. Csd subfamily.

Possible thioredoxin; Rv1324, (MTCY130.09), len: 304 aa. Possible thioredoxin, similar to several e.g. U00014|Q49716 TRXA from Mycobacterium leprae (255 aa), FASTA scores: opt: 1014, E(): 0, (69.7% identity in 228 aa overlap); THIO_RHOSH|P08058 TrxA from Rhodobacter sphaeroides (105 aa), FASTA scores: opt 196, E(): 1.9e-06, (33.0% identity in 103 aa overlap). Contains PS00339 Aminoacyl-transfer RNA synthetases class-II signature 2. A core mycobacterial gene; conserved in mycobacterial strains (See Marmiesse et al., 2004).

Rv0816c, (MTV043.08c), len: 140 aa. Probable thiX,thioredoxin, equivalent to ThiX|U15182|MLU15182_21 thioredoxin from Mycobacterium leprae (172 aa), FASTA scores: opt: 556, E(): 8.8e-31, (63.8% identity in 141 aa overlap); and similar to AAL08576.1|AF418548_2|AF418548 thioredoxin from Mycobacterium avium subsp. paratuberculosis (117 aa). Also similar to other bacterial thioredoxins e.g. CAB95303.1|AL359779 putative thioredoxin from Streptomyces coelicolor (126 aa); P33791|THIO_STRAU|TRX|TRXA thioredoxin from Streptomyces aureofaciens (106 aa); etc. And similar to Rv3914|MT4033|MTV028.0 [...]

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.

Hypothetical alanine rich protein; An anti-sigma factor for extracytoplasmic function (ECF) sigma factor SigM. 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 degr [...]

Alternative RNA polymerase sigma-E factor (sigma-24) SigH (RPOE); 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 a cognate anti-sigma factor (RshA) until released. This sigma factor is involved in heat shock and oxidative stress responses; it positively regulates the expression of itself, sigE, sigB and a number of transcriptional regulators as well as other effectors of heat and oxidative stress, leading to direct and ind [...]