Sequence alignment between 4x0s(A) and UniProt seq P61769 (B2MG_HUMAN):

P61769 (B2MG_HUMAN): Beta-2-microglobulin from Homo sapiens
                 10        20        30        40        50        60        70        80        90       100       110         
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------
UniProt: MSRSVALAVLALLSLSGLEAIQRTPKIQVYSRHPAENGKSNFLNCYVSGFHPSDIEVDLLKNGERIEKVEHSDLSFSKDWSFYLLYYTEFTPTEKDEYACRVNHVTLSQPKIVKWDRDM
         .................................................................................X...X.X.XXXXXXXX......................
PDB seq: ---------------------------------------------------------------------------------XYLLXYVEXKVAXAVK----------------------
                                                                                          ---------+------                      
                                                                                                  10