This model represents the N-terminal domain or EccCa subunit of the type VII secretion protein EccC as found in the Actinobacteria. Type VII secretion is defined more broadly as including secretion systems for ESAT-6-like proteins in the Firmicutes as well as in the Actinobacteria, but this family does not show close homologs in the Firmicutes. [Protein fate, Protein and peptide secretion and trafficking]
Jiyao W et al.(2023). "The conserved domain database in 2023.",