Human Ubiquitin-Conjugating Enzyme E2 Variant 2 Protein is a recombinant protein from Human produced in E. coli. Recombinant Human Ubiquitin-Conjugating Enzyme E2 Variant 2 is produced by our E.coli expression system and the target gene encoding Met1-Asn145 is expressed with a 6His tag at the N-terminus.