Conserved protein Acg; Rv2032, (MTV018.19), len: 331 aa. Acg (for acr-coregulated gene), conserved protein possibly member of a superfamily of classical nitroreductases (see Purkayastha et al., 2002), similar to Rv3127 and Rv3131. Predicted possible vaccine candidate (See Zvi et al., 2008); Belongs to the nitroreductase family.

Conserved protein; Rv3127, (MTCY164.37), len: 344 aa. Conserved protein, highly similar to Mycobacterium tuberculosis protein O53476|Rv2032|MTV018.19 (331 aa), FASTA scores: opt: 1212, E(): 6e-69, (56.7% identity in 321 aa overlap),and also similar to P95195|MTCY03A2.27c (332 aa), FASTA scores: opt: 521, E(): 1.6e-25; (35.0% identity in 326 aa overlap). Some similarity to C-terminal half of hypothetical Mycobacterium tuberculosis proteins. Predicted possible vaccine candidate (See Zvi et al., 2008).

Rv1733c, (MTCY04C12.18c), len: 210 aa. Probable conserved transmembrane protein. Similar to AL109962|SCJ1_26 hypothetical protein from Streptomyces coelicolor (193 aa), FASTA scores: opt: 287, E(): 3.8e-11,(35.2% identity in 182 aa overlap). Predicted possible vaccine candidate (See Zvi et al., 2008).

Ferredoxin FdxA; Ferredoxins are iron-sulfur proteins that transfer electrons in a wide variety of metabolic reactions.

Heat shock protein HspX (alpha-crystallin homolog) (14 kDa antigen) (HSP16.3); Acts as a chaperone, as it has a significant ability to suppress the thermal denaturation of alcohol dehydrogenase. Cells overexpressing this gene grow more slowly than wild-type cells, and are less susceptible to autolysis following saturation of the culture in vitro, suggesting this protein may slow down the growth rate of M.tuberculosis in culture and by extension during macrophage infection. Belongs to the small heat shock protein (HSP20) family.

Rv3134c, (MTCY03A2.240, len: 268 aa. Universal stress protein family protein. Ala-, Val- rich (see citations below), related to other hypothetical Mycobacterium tuberculosis proteins e.g. O53474|Rv2028c|MTV018.15c (279 aa), FASTA scores: opt: 562,E(): 3.2e-28, (40.65% identity in 273 aa overlap); O06188|Rv2624c|MTCY01A10.08 (272 aa), FASTA scores: opt: 458, E(): 1.1e-21, (36.55% identity in 271 aa overlap); O53472|R2026c|MTV018.13c (294 aa), FASTA scores: opt: 232,E(): 1.9e-07, (30.45% identity in 276 aa overlap); etc. Shares some similarity with other hypothetical proteins from Strept [...]

Hypoxic response protein 1 Hrp1; Unlike some other CBS-domain containing proteins does not seem to bind AMP.

Conserved protein; Stimulates pro-inflammatory cytokine expression via TLR2 signaling pathway. Activation of TLR2 results in the phosphorylation and activation of NF-kappa-B. Also induces TLR2 expression. May influence the innate immune responses to facilitate the survival of M.tuberculosis in the granulomatous microenvironment. Belongs to the nitroreductase family.

Universal stress protein family protein TB31.7; May play a role in the establishment of a persistent infection (latency) in the host, as strains without this gene are hypervirulent. Overexpression of the protein retards growth in culture; Glu-15 and Ala-117 mutant proteins which bind less ATP do not show this retardation, suggesting growth may be regulated through an ATP- dependent function.