>sp|A1L3K1|UB2SA_XENLA Ubiquitin-conjugating enzyme E2 S-A OS=Xenopus laevis GN=ube2s-a MNSNVENLPPHIIRLVYKEVTTLTADPPDGIKVFPNEEDLTDLQVTIEGPEGTPYAGGLF RMKLLLGKDFPASPPKGYFLTKIFHPNVGPNGEICVNVLKRDWTAELGIRHVLLTIKCLL IHPNPESALNEEAGRLLLENYEEYAARARLLTEIHGGACSTSSGRAEATQDLASGASASS ADPMIPGVLGGAEGPMAKKHAGERDKKLAAKKKLDKKRALRRL