This model represents the transmembrane protein EccB of the actinobacterial flavor of type VII secretion systems. Species such as Mycobacterium tuberculosis have several instances of this system per genome, designated EccE1, EccE2, etc. This model represents a conserved core region, and many members have 200 or more additional C-terminal residues. [Protein fate, Protein and peptide secretion and trafficking]
Jiyao W et al.(2023). "The conserved domain database in 2023.",