Members of this family share C-terminal homology to the choline-binding form of the pneumococcal surface antigen PspC, but not to its allelic LPXTG-anchored forms because they lack the choline-binding repeat region. Members of this family should not be confused with PspC itself, whose identity and function reflect regions N-terminal to the choline-binding region. See Iannelli, et al. (PMID: 11891047) for information about the different allelic forms of PspC.
Jiyao W et al.(2023). "The conserved domain database in 2023.",