Sequence alignment between 1zgu(A) and UniProt seq Q15819 (UB2V2_HUMAN):

Q15819 (UB2V2_HUMAN): Ubiquitin-conjugating enzyme E2 variant 2 from Homo sapiens
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140     
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+-----
UniProt: MAVSTGVKVPRNFRLLEELEEGQKGVGDGTVSWGLEDDEDMTLTRWTGMIIGPPRTNYENRIYSLKVECGPKYPEAPPSVRFVTKINMNGINNSSGMVDARSIPVLAKWQNSYSIKVVLQELRRLMMSKENMKLPQPPEGQTYNN
PDB seq: ------VKVPRNFRLLEELEEGQKGVGDGTVSWGLEDDEDMTLTRWTGMIIGPPRTNYENRIYSLKVECGPKYPEAPPSVRFVTKINMNGINNSSGMVDARSIPVLAKWQNSYSIKVVLQELRRLMMSKENMKLPQPPEGQTYNN
               --------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+
                      20        30        40        50        60        70        80        90       100       110       120       130       140       150