PRDX5 and infection: Pmp21, like its C. trachomatis homologue PmpD, is processed during infection, and processed forms of Pmp6 and Pmp20 have been identified in purified EBs (Vandahl et al., 2002; Wehrl et al., 2004; Kiselev et al., 2009; Swanson et al., 2009).