Sequence alignment between 3pse(B) and UniProt seq P05161 (ISG15_HUMAN):

P05161 (ISG15_HUMAN): Ubiquitin-like protein ISG15 from Homo sapiens
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160     
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+-----
UniProt: MGWDLTVKMLAGNEFQVSLSSSMSVSELKAQITQKIGVHAFQQRLAVHPSGVALQDRVPLASQGLGPGSTVLLVVDKCDEPLSILVRNNKGRSSTYEVRLTQTVAHLKQQVSGLEGVQDDLFWLTFEGKPLEDQLPLGEYGLKPLSTVFMNLRLRGGGTEPGGRS
         ...................XXX.......................................................X....X..................................................................................
PDB seq: ---DLTVKMLAGNEFQVSL---MSVSELKAQITQKIGVHAFQQRLAVHPSGVALQDRVPLASQGLGPGSTVLLVVDKSDEPLNILVRNNKGRSSTYEVRLTQTVAHLKQQVSGLEGVQDDLFWLTFEGKPLEDQLPLGEYGLKPLSTVFMNLRLRG---------
            ------+---------   -------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+------         
                 10                  30        40        50        60        70        80        90       100       110       120       130       140       150