>tr|A0A3Q7QBH6|A0A3Q7QBH6_CALUR E2 ubiquitin-conjugating enzyme OS=Callorhinus ursinus GN=UBE2K MANIAVQRIKREFKEVLKSEETSKNQIKVDLVDENFTELRGEIAGPPDTPYEGGRYQLEI KIPETYPFNPPKVRFITKIWHPNISSVTGAICLDILKDQWAAAMTLRTVLLSLQALLAAA EPDDPQDAVVANQYKQNPEMFKQTARLWAHVYAGAPVSSPEYTKKIENLCAMGFDRNAVI VALSSKSWDVETATELLLSN