Sequence alignment between 5u3l(H) and UniProt seq :

UniProt: 
PDB seq: QVQLVQSGGGLVKPGGSLTLSCSASGFFFDNSWMGWVRQAPGKGLEWVGRIRRLKDGATGEYGAAVKDRFTISRDDSRNMLYLHMRTLKTEDSGTYYCTMDEGTPVTRFLEWGYFYYYMAVWGRGTTVIVSSASTKGPSVFPLAPSSSTSTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSYICNVNHKPSNTKVDKRVEP
         ---------+---------+---------+---------+---------+------------+---------+---------+------------+---------+----+----+------------+---------+--------+-------+---------+---------+---------+---------+-------------+---------+---
                 10        20        30        40        50           60        70        80           90       100 100E 100J          110       120      130     140       150       160       170       180           200       210