Sequence alignment between 3azk(F) and UniProt seq P62805 (H4_HUMAN):

P62805 (H4_HUMAN): Histone H4 from Homo sapiens
                 10        20        30        40        50        60        70        80        90       100   
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---
UniProt: MSGRGKGGKGLGKGGAKRHRKVLRDNIQGITKPAIRRLARRGGVKRISGLIYEETRGVLKVFLENVIRDAVTYTEHAKRKTVTAMDVVYALKRQGRTLYGFGG
         ...........................................................X...........................................
PDB seq: -------------------RKVLRDNIQGITKPAIRRLARRGGVKRISGLIYEETRGVLQVFLENVIRDAVTYTEHAKRKTVTAMDVVYALKRQGRTLYGFGG
                            -+---------+---------+---------+---------+---------+---------+---------+---------+--
                            20        30        40        50        60        70        80        90       100