Sequence alignment between 1lk3(A) and UniProt seq P22301 (IL10_HUMAN):

P22301 (IL10_HUMAN): Interleukin-10 from Homo sapiens
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170        
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+--------
UniProt: MHSSALLCCLVLLTGVRASPGQGTQSENSCTHFPGNLPNMLRDLRDAFSRVKTFFQMKDQLDNLLLKESLLEDFKGYLGCQALSEMIQFYLEEVMPQAENQDPDIKAHVNSLGENLKTLRLRLRRCHRFLPCENKSKAVEQVKNAFNKLQEKGIYKAMSEFDIFINYIEAYMTMKIRN
         .....................................................................................................................................X............................................
PDB seq: --------------------------------------NMLRDLRDAFSRVKTFFQMKDQLDNLLLKESLLEDFKGYLGCQALSEMIQFYLEEVMPQAENQDPDIKAHVNSLGENLKTLRLRLRRCHRFLPCE-KSKAVEQVKNAFNKLQEKGIYKAMSEFDIFINYIEAYMTMK---
                                               ---------+---------+---------+---------+---------+---------+---------+---------+---------+----- ---+---------+---------+---------+-------   
                                                       30        40        50        60        70        80        90       100       110       120       130       140       150