X ORF protein vpx VPX_HV2EH MDPRERVPPGNSGEETVGEAFEWLETTLEHLNRVAVNHLPRELIFQVWQKSWAYWREEQGMSISYTKYRYLCLMQKAMFIHFAKGCGCLREGHGPGGWRSGPPPPPPPGLA Protein Vpx Viral protein X 111 Plays a role in nuclear translocation of the viral pre- integration complex (PIC), thus is required for the virus to infect non-dividing cells. May be necessary for virus replication (By similarity).