This family consists of a number of 29 residue repeats which seem to be specific to the Ehrlichia chaffeensis variable length PCR target (VLPT) protein. Ehrlichia chaffeensis is a tick-transmitted rickettsial agent and is responsible for human monocytic ehrlichiosis (HME). The function of this family is unknown.
Jiyao W et al.(2023). "The conserved domain database in 2023.",