>sp|P0C205-2|REX_HTL1A Isoform p21Rex of Protein Rex OS=Human T-cell leukemia virus 1 (strain Japan ATK-1 subtype A) OX=11926 MDALSAQLYSSLSLDSPPSPPREPLRPSRSLPRQSLIQPPTFHPPSSRPCANTPPSEMDT WNPPLGSTSQPCLFQTPDSGPKTCTPSGEAPLSACTSTSFPPPSPGPSCPT