Sequence alignment between 3nif(E) and UniProt seq :

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