Sequence alignment between 1p3b(F) 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
         .............................................X.........................................................
PDB seq: ----------------------LRDNIQGITKPAIRRLARRGGVKAISGLIYEETRGVLKVFLENVIRDAVTYTEHAKRKTVTAMDVVYALKRQGRTLYGFGG
                               --------+---------+---------+---------+---------+---------+---------+---------+--
                                     230       240       250       260       270       280       290       300