Sequence alignment between 4x23(D) and UniProt seq P02283 (H2B_DROME):

P02283 (H2B_DROME): Histone H2B from Drosophila melanogaster
                 10        20        30        40        50        60        70        80        90       100       110       120   
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---
UniProt: MPPKTSGKAAKKAGKAQKNITKTDKKKKRKRKESYAIYIYKVLKQVHPDTGISSKAMSIMNSFVNDIFERIAAEASRLAHYNKRSTITSREIQTAVRLLLPGELAKHAVSEGTKAVTKYTSSK
PDB seq: --------------------------------ESYAIYIYKVLKQVHPDTGISSKAMSIMNSFVNDIFERIAAEASRLAHYNKRSTITSREIQTAVRLLLPGELAKHAVSEGTKAVTKYTSS-
                                         --------+---------+---------+---------+---------+---------+---------+---------+---------+- 
                                                40        50        60        70        80        90       100       110       120