EccE is a family of largely Gram-positive bacterial transmembrane componenets of the type VII secretion system characterised in Mycobacterium tuberculosis, systems ESX1-5. Translocation of virulent peptides through the membranes is thought to be mediated via a complex that includes EccB, EccC, EccD, EccE, and MycP [1,2]. EccB, EccC, EccD, and EccE form a stable complex in the mycobacterial cell envelope [3].

1: Computational analysis of the ESX-1 region of Mycobacterium tuberculosis: insights into the mechanism of type VII secretion system. Das C, Ghosh TS, Mande SS; PLoS One. 2011;6:e27980. PMID:22140496

2: Protein secretion and surface display in Gram-positive bacteria. Schneewind O, Missiakas DM; Philos Trans R Soc Lond B Biol Sci. 2012;367:1123-1139. PMID:22411983

3: Leaving home ain't easy: protein export systems in Gram-positive bacteria. Freudl R; Res Microbiol. 2013;164:664-674. PMID:23541477