This model describes protein translations of a family, RPE5, of Rickettsia palindromic elements (RPE). The elements spread within a genome as selfish genetic elements, inserting into genes additional coding region that does not disrupt the reading frame. This model finds RPE-encoded regions in several Rickettsial species and, so far, no where else.
Lu S et al.(2020). "CDD/SPARCLE: the conserved domain database in 2020.",