Sequence alignment between 5e4e(A) and UniProt seq P35225 (IL13_HUMAN):

P35225 (IL13_HUMAN): Interleukin-13 from Homo sapiens
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140      
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+------
UniProt: MHPLLNPLLLALGLMALLLTTVIALTCLGGFASPGPVPPSTALRELIEELVNITQNQKAPLCNGSMVWSINLTAGMYCAALESLINVSGCSAIEKTQRMLSGFCPHKVSAGQFSSLHVRDTKIEVAQFVKDLLLHLKKLFREGQFN
         ..........................................X.......X.....XX.............X...............................................XX............X..XX........
PDB seq: ---------------------------------PGPVPPSTAVRELIEELINITQN--APLCNGSMVWSINRTAGMYCAALESLINVSGCSAIEKTQRMLSGFCPHKVSAGQFSSLHVRSSKIEVAQFVKDLLFHLRTLFREGQFN
                                          ---------+---------+---  ----+---------+---------+---------+---------+---------+---------+---------+---------+---
                                                  10        20        30        40        50        60        70        80        90       100       110