- BP000983-C289: Recombinant Human Ubiquitin Conjugating Enzyme E2S (UBE2S) 
 
 Source: E. coli-derived.
 Purity: > 95% by SEC-HPLC and reducing SDS-PAGE.
 Endotoxin: < 0.1 ng/ug (1 IEU/ug).
- BP000983-ENZ-444: Recombinant Human Ubiquitin Conjugating Enzyme E2S (UBE2S) 
 
 Source: E. coli-derived.
 A single, non-glycosylated, polypeptide chain containing 258 amino acids (1-222 a.a.) and having a molecular mass of 27.9 kDa.
 Purity: > 90% by SDS-PAGE.