ESX-1 secretion-associated protein A, EspA; Required for secretion of EsxA (ESAT-6) and EsxB (CFP-10) and for virulence. Involved in translocation of bacteria from the host (human) phagolysosome to the host cytoplasm.

Rv3612c, (MTCY07H7B.10), len: 109 aa. Conserved hypothetical protein. Residues 58 to 81 highly similar to N-terminal part of AAK46718|MT2424 hypothetical 3.9 KDA protein from Mycobacterium tuberculosis strain CDC1551 (36 aa), FASTA scores: opt: 108, E(): 0.38, (69.25% identity in 26 aa overlap).

Hypothetical protein; Rv3613c, (MTCY07H7B.09), len: 53 aa. Hypothetical unknown protein.

6 kDa early secretory antigenic target EsxA (ESAT-6); A secreted protein that plays a number of roles in modulating the host's immune response to infection as well as being responsible for bacterial escape into the host cytoplasm. Acts as a strong host (human) T-cell antigen. Inhibits IL- 12 p40 (IL12B) and TNF-alpha expression by infected host (mouse) macrophages, reduces the nitric oxide response by about 75%. In mice previously exposed to the bacterium, elicits high level of IFN-gamma production by T-cells upon subsequent challenge by M.tuberculosis, in the first phase of a protecti [...]

10 kDa culture filtrate antigen EsxB (LHP) (CFP10); A secreted protein. Acts as a strong host (human) T-cell antigen. Involved in translocation of bacteria from the host (human) phagolysosome to the host cytoplasm. Might serve as a chaperone to prevent uncontrolled membrane lysis by its partner EsxA; native protein binds poorly to artificial liposomes in the absence or presence of EsxA. EsxA and EsxA-EsxB are cytotoxic to pneumocytes. EsxB (and EsxA-EsxB but not EsxA alone) activates human neutrophils; EsxB transiently induces host (human) intracellular Ca(2+) mobility in a dose-depend [...]

Rv3864, (MTCY01A6.04c), len: 402 aa. EspE, ESX-1 secretion-associated protein, similar to Q49722|ML0405|B1620_C2_213|MLCL383.01 hypothetical 40.8 KDA protein from Mycobacterium leprae (394 aa) FASTA scores: opt: 397, E(): 1.2e-12, (31.0% identity in 410 aa overlap). Also similar to various proteins from several organisms e.g. Q9VYF9|CG12723 hypothetical protein from Drosophila melanogaster (Fruit fly) (450 aa), FASTA scores: opt: 291,E(): 2.3e-07, (34.6% identity in 130 aa overlap); Q98UE3 procollagen ALPHA1(III) (fragment) from Xenopus laevis (African clawed frog) (117 aa) FASTA score [...]

ESX-1 secretion-associated protein EspL; Probably plays a role in host phagosome maturation arrest.

ESX-1 transcriptional regulatory protein EspR; Virulence regulator that has both architectural and regulatory roles. Impacts cell wall functions and pathogenesis through regulation of multiple genes, including the espACD operon, which is a key ESX-1 component. Influences target gene expression positively or negatively, depending on its binding position relative to the genes it controls. Acts by binding directly to the DNA. May play a central role in regulating virulence gene expression.

Secreted ESX-1 substrate protein B, EspB. Conserved alanine and glycine rich protein; Required for host-cell death and may support an EsxA- independent virulence function. Secreted processed form of EspB binds to phosphatidic acid and phosphatidylserine. Inhibits IFN-gamma-induced autophagy in murine macrophages.