Sequence alignment between 1u3h(B) and UniProt seq P04213 (TVB5_MOUSE):

P04213 (TVB5_MOUSE): T-cell receptor beta chain V region C5 (Fragment) from Mus musculus
                 10        20        30        40        50        60        70        80        90       100       110       120  
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+--
UniProt: ILLCAKHMEAAVTQSPRSKVAVTGGKVTLSCHQTNNHDYMYWYRQDTGHGLRLIHYSYVADSTEKGDIPDGYKASRPSQENFSLILELASLSQTAVYFCASSGTGGALDTQYFGPGTRLLVL
         .................X......X......X.....XX...............X...X.X.......................X..X.XX...X......XXX..XXXX.........X..
PDB seq: ----------AVTQSPRNKVAVTGEKVTLSCNQTNNHNNMYWYRQDTGHGLRLIYYSYGAGSTEKGDIPDGYKASRPSQENFSLTLESATPSQTSVYFCASGDAGGGYE-QYFGPGTRLTVL
                   -------+---------+---------+---------+---------+---------+--------+---------+---------+---------+-- ----+-------
                         10        20        30        40        50        60       70        80        90       100     110