Sequence alignment between 8g6h(B) and UniProt seq P62799 (H4_XENLA):

P62799 (H4_XENLA): Histone H4 from Xenopus laevis
                 10        20        30        40        50        60        70        80        90       100   
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---
UniProt: MSGRGKGGKGLGKGGAKRHRKVLRDNIQGITKPAIRRLARRGGVKRISGLIYEETRGVLKVFLENVIRDAVTYTEHAKRKTVTAMDVVYALKRQGRTLYGFGG
PDB seq: --------------------KVLRDNIQGITKPAIRRLARRGGVKRISGLIYEETRGVLKVFLENVIRDAVTYTEHAKRKTVTAMDVVYALKRQGRTLYGFGG
                             +---------+---------+---------+---------+---------+---------+---------+---------+--
                            20        30        40        50        60        70        80        90       100