Protein Domain : Inclusion membrane protein E IPR035118

Type	Family
Description	The chlamydial inclusion membrane is extensively modified by the insertion of type III secreted effector proteins [ ]. These inclusion membrane proteins (Incs) have two major characteristics: an N-terminal type III secretion signal that is necessary for their secretion out of the bacterium and a hydrophobic region consisting of at least two trans-membrane helices that allows insertion into the inclusion membrane. Generally, both the N- and C-terminal regions of the Inc are exposed to the host cell cytosol [].This family has members such as the IncE (also known as CT116) proteins found in Chlamydia trachomatis. IncE Interacts with Retromer-Associated Sorting Nexins (SNXs) directly binding the PX-domains of SNX5/6. It is expressed within the first 2 hours of C. trachomatis infection. IncE region 101-132 is the binding site for SNX5/6 causing re-localization of SNX5/6 from endosomes to the inclusion membrane. IncE101-132 expression was shown to be sufficient to maintain CI-MPR (Cation-Independent Mannose-6-Phosphate Receptor) in retromer-containing compartments, thereby disrupting efficient CI-MPR trafficking to the trans-Golgi. It has been suggested that SNX5/6 bind directly to IncE independently of phosphoinositides and that the predicted IncE C-terminal β-hairpin is required. IncE-mediated sequestration of retromer SNX-BAR proteins may promote Golgi fragmentation, a process that facilitates lipid acquisition by C. trachomatis and enhances progeny production [].
Short Name	IncE