Sequence alignment between 1s4z(A) and UniProt seq P83917 (CBX1_MOUSE):

P83917 (CBX1_MOUSE): Chromobox protein homolog 1 from Mus musculus
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180     
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+-----
UniProt: MGKKQNKKKVEEVLEEEEEEYVVEKVLDRRVVKGKVEYLLKWKGFSDEDNTWEPEENLDCPDLIAEFLQSQKTAHETDKSEGGKRKADSDSEDKGEESKPKKKKEESEKPRGFARGLEPERIIGATDSSGELMFLMKWKNSDEADLVPAKEANVKCPQVVISFYEERLTWHSYPSEDDDKKDDKN
         .....................................................................................................XX........................................................................X.........
PDB seq: -----------------------------------------------------------------------------------------------------HMKEESEKPRGFARGLEPERIIGATDSSGELMFLMKWKNSDEADLVPAKEANVKCPQVVISFYEERLTWHSYPSD---------
                                                                                                              --------+---------+---------+---------+---------+---------+---------+------         
                                                                                                                    110       120       130       140       150       160       170