Sequence alignment between 1fa4(A) and UniProt seq Q3M9H8 (PLAS_TRIV2):

Q3M9H8 (PLAS_TRIV2): Plastocyanin from Trichormus variabilis (strain ATCC 29413 / PCC 7937)
                 10        20        30        40        50        60        70        80        90       100       110       120       130         
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------
UniProt: MKLIAASLRRLSLAVLTVLLVVSSFAVFTPSAAAETYTVKLGSDKGLLVFEPAKLTIKPGDTVEFLNNKVPPHNVVFDATLNPAKSADLAKSLSHKQLLMSPGQSTSTTFPADAPAGDYSFYCEPHRGAGMVGKITVAS
         ...............................................................................X.....................................X.X..................X
PDB seq: ----------------------------------ETYTVKLGSDKGLLVFEPAKLTIKPGDTVEFLNNKVPPHNVVFDAALNPAKSADLAKSLSHKQLLMSPGQSTSTTFPADAPAGEYTFYCEPHRGAGMVGKITVAG
                                           ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+-----
                                                   10        20        30        40        50        60        70        80        90       100