Macrophage-expressed gene 1 protein (Q2M385)

Uniprot ID Q2M385
Protein Name Macrophage-expressed gene 1 protein
Gene Name MPEG1
Species Homo sapiens (Human)
Signal peptide(a) Y Secretome P(b)
Function Plays a key role in the innate immune response following bacterial infection by inserting into the bacterial surface to form pores (By similarity). By breaching the surface of phagocytosed bacteria, allows antimicrobial effectors to enter the bacterial periplasmic space and degrade bacterial proteins such as superoxide dismutase sodC which contributes to bacterial virulence (By similarity). Shows antibacterial activity against a wide spectrum of Gram-positive, Gram-negative and acid-fast bacteria (PubMed:23753625, PubMed:26402460, PubMed:30609079). Reduces the viability of the intracytosolic pathogen L.monocytogenes by inhibiting acidification of the phagocytic vacuole of host cells which restricts bacterial translocation from the vacuole to the cytosol (By similarity). Required for the antibacterial activity of reactive oxygen species and nitric oxide (By similarity). .
GO - Molecular function
GO - Biological process
  • defense response to bacterium : IMP:UniProtKB
  • defense response to Gram-negative bacterium : IMP:UniProtKB
  • defense response to Gram-positive bacterium : IDA:UniProtKB
  • innate immune response : IEA:UniProtKB-KW
  • pore formation in membrane of other organism : ISS:UniProtKB
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(a) The Signal peptide D-score cutoff for "YES"(having signal peptide) is 0.45.
(b) Non-classically secreted proteins should obtain an NN-score(Neural Networks score) exceeding the normal threshold of 0.5, but not at the same time be predicted to contain a signal peptide.