STRING protein interaction network
Network nodes represent proteins
splice isoforms or post-translational modifications are collapsed, i.e. each node represents all the proteins produced by a single, protein-coding gene locus.
Node Color
colored nodes:
query proteins and first shell of interactors
white nodes:
second shell of interactors
Node Content
empty nodes:
proteins of unknown 3D structure
filled nodes:
some 3D structure is known or predicted
Edges represent protein-protein associations
associations are meant to be specific and meaningful, i.e. proteins jointly contribute to a shared function; this does not necessarily mean they are physically binding each other.
Known Interactions
from curated databases
experimentally determined
Predicted Interactions
gene neighborhood
gene fusions
gene co-occurrence
protein homology
Your Input:
Gene Fusion
espRNucleoid-associated 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 (132 aa)    
Predicted Functional Partners:
ESX-1 secretion-associated protein 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
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 [...]
ESX-1 secretion-associated protein EspB; 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
6 kDa early secretory antigenic target; 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 protective immune resp [...]
ESX-1 secretion-associated protein EspC; Required for ESX-1 function. Required for either stability or expression of EspA
Nucleoid-associated protein Lsr2; DNA-bridging protein that has both architectural and regulatory roles. Influences the organization of chromatin and gene expression by binding non-specifically to DNA, with a preference for AT-rich sequences, and bridging distant DNA segments. Binds in the minor groove of AT-rich DNA. Represses expression of multiple genes involved in a broad range of cellular processes, including major virulence factors or antibiotic-induced genes, such as iniBAC or efpA, and genes important for adaptation of changing O(2) levels. May also activate expression of some [...]
ESAT-6-like protein EsxB; 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- dependent manner, monocytes and [...]
ESX-1 secretion system protein EccCa1; Part of the ESX-1 specialized secretion system, which delivers several virulence factors to host cells during infection, including the key virulence factors EsxA (ESAT-6) and EsxB (CFP- 10)
Conserved protein; Rv3850, (MTCY01A6.18c), len: 218 aa. Conserved protein, equivalent to Q9CDD0|ML0068 hypothetical protein from Mycobacterium leprae (238 aa) FASTA scores: opt: 1071,E(): 7.2e-55, (78.35% identity in 217 aa overlap). A core mycobacterial gene; conserved in mycobacterial strains (See Marmiesse et al., 2004)
ESX-1 secretion-associated protein EspD; Required for ESX-1 function. Required for the maintenance of adequate cellular levels of both EspA and EspC. Facilitates EsxA secretion
Your Current Organism:
Mycobacterium tuberculosis H37Rv
NCBI taxonomy Id: 83332
Other names: M. tuberculosis H37Rv, Mycobacterium sp. H37Rv, Mycobacterium tuberculosis H37Rv, Mycobacterium tuberculosis str. H37Rv, Mycobacterium tuberculosis strain H37Rv
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