Sequence alignment between 1c6y(A) and UniProt seq O09893 (O09893_9HIV1):

O09893 (O09893_9HIV1): Protease (Fragment) from Human immunodeficiency virus 1
                 10        20        30        40        50        60        70        80        90         
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------
UniProt: PQITLWQRPVVTIKIGGQLMEALIDTGADDTVLEEMDLPGRWKPKIIGGIGGFVKVRQYDQIPIEICGHKVIGTVLVGPTPTNIIGRNLLTQIGCTLNF
PDB seq: PQITLWQRPVVTIKIGGQLMEALIDTGADDTVLEEMDLPGRWKPKIIGGIGGFVKVRQYDQIPIEICGHKVIGTVLVGPTPTNIIGRNLLTQIGCTLNF
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------
                 10        20        30        40        50        60        70        80        90