Sequence alignment between 1a6t(B) and UniProt seq :

UniProt: 
PDB seq: EVQLQQSGPDLVKPGASVKISCKASGYSFSTYYMHWVKQSHGKSLEWIGRVDPDNGGTSFNQKFKGKAILTVDKSSSTAYMELGSLTSEDSAVYYCARRDDYYFDFWGQGTSLTVSSAKTTPPSVYPLAPVCGGTTGSSVTLGCLVKGYFPEPVTLTWNSGSLSSGVHTFPAVLQSGLYTLSSSVTVTSSTWPSQTITCNVAHPASSTKVDKKIEPR
         ---------+---------+---------+---------+---------+----------+---------+---------+------------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---
                 10        20        30        40        50         60        70        80           90       100       110       120       130       140       150       160       170       180       190       200       210