Sequence alignment between 4zd3(H) and UniProt seq :

UniProt: 
PDB seq: EVQLVQSGAEVKKPGESLKISCKGSGYSFTSYWIGWVRQMPGKGLEWMGIIYPGDSDTRYSPSFQGQVTISADKSISTAYLQWSSLKASDTAMYYCARPHYYDSLDAFDIWGQGTMVTVSSASTKGPSVFPLAPTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTYICNVNHKPSNTKVDK
         ------------------+---------+-----+---------+-----------------+--------+---------+---------+---------+----------+---------+---------+-----------+---------+---------+---------+---------+---------+----
                          20        30    40        50                70       80        90       100       110        120       130       140         160       170       180       190       210       220