Sequence alignment between 1f9r(A) and UniProt seq P02776 (PLF4_HUMAN):

P02776 (PLF4_HUMAN): Platelet factor 4 from Homo sapiens
                 10        20        30        40        50        60        70        80        90       100 
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+-
UniProt: MSSAAGFCASRPGLLFLGLLLLPLVVAFASAEAEEDGDLQCLCVKTTSQVRPRHITSLEVIKAGPHCPTAQLIATLKNGRKICLDLQAPLYKKIIKKLLES
         ...................................................................XXX...............................
PDB seq: ------------------------------------GDLQCLCVKTTSQVRPRHITSLEVIKAGPHCAVPQLIATLKNGRKICLDLQAPLYKKIIKKLLES
                                             ----+---------+---------+---------+---------+---------+---------+
                                                10        20        30        40        50        60        70