Sequence alignment between 4ui9(D) and UniProt seq P60006 (APC15_HUMAN):

P60006 (APC15_HUMAN): Anaphase-promoting complex subunit 15 from Homo sapiens
                 10        20        30        40        50        60        70        80        90       100       110       120 
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+-
UniProt: MSTLFPSLFPRVTETLWFNLDRPCVEETELQQQEQQHQAWLQSIAEKDNNLVPIGKPASEHYDDEEEEDDEDDEDSEEDSEDDEDMQDMDEMNDYNESPDDGEVNEVDMEGNEQDQDQWMI
         ....X....................................................................................................................
PDB seq: -STLYPSLFPRVTETLWFNLDRPCVEETELQQQEQQHQAWLQSIAEKDNNLVPIGK-----------------------------------------------------------------
          --------+---------+---------+---------+---------+------                                                                 
                 10        20        30        40        50