Sequence alignment between 4lve(A) and UniProt seq P06312 (KV401_HUMAN):

P06312 (KV401_HUMAN): Immunoglobulin kappa variable 4-1 from Homo sapiens
                 10        20        30        40        50        60        70        80        90       100       110       120              
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+-
UniProt: MVLQTQVFISLLLWISGAYGDIVMTQSPDSLAVSLGERATINCKSSQSVLYSSNNKNYLAWYQQKPGQPPKLLIYWASTRESGVPDRFSGSGSGTDFTLTISSLQAEDVAVYYCQQYYSTP-------------
         ......................................................XX..............................................................................
PDB seq: --------------------DIVMTQSPDSLAVSLGERATINCKSSQSVLYSSNSTNYLAWYQQKPGQPPKLLIYWASTRESGVPDRFSGSGSGTDFTLTISSLQAEDVAVYYCQQYYSTPYSFGQGTKLEIKR
                             ---------+---------+---------------+---------+---------+---------+---------+---------+---------+---------+--------
                                     10        20              30        40        50        60        70        80        90       100