>4YDG_1|Chains A, B|HTLV-1 protease|Human T-cell leukemia virus 1 (strain Japan ATK-1 subtype A) (11926) PVIPLDPARRPVIKAQVDTQTSHPKTIEALLDTGADMTVIPIALFSSNTPLKNTSVLGAGGQTQDHFKLTSLPVLIRLPFRTTPIVLTSCLVDTKNNWAIIGRDALQQCQGVLYLP