Sequence alignment between 1hio(B) and UniProt seq P0C1H5 (H2B7_CHICK):

P0C1H5 (H2B7_CHICK): Histone H2B 7 from Gallus gallus
                 10        20        30        40        50        60        70        80        90       100       110       120      
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+------
UniProt: MPEPAKSAPAPKKGSKKAVTKTQKKGDKKRKRARKESYSIYVYKVLKQVHPDTGISSKAMSIMNSFVNDIFERIAGEASRLAHYNKRSTITSREIQTAVRLLLPGELAKHAVSEGTKAVTKYTSSK
         ............................................................XX..............X............................................X....
PDB seq: ------------------------------------SYSIYVYKVLKQVHPDTGISSKAMGSMNSFVNDIFERIAGLASRLAHYNKRSTITSREIQTAVRLLLPGELAKHAVSEGTKAVTKHTSSK
                                             ----+---------+---------+---------+---------+---------+---------+---------+---------+-----
                                                40        50        60        70        80        90       100       110       120