Aldo-Keto Reductase Family 1 Member A1 (AKR1A1) catalyzes the NADPH-dependent reduction of a wide variety of carbonyl-containing compounds to their corresponding alcohols. AKR1A1 Human Recombinant produced in E. Coli is a single, non-glycosylated, polypeptide chain containing 325 amino acids (1-325 aa) and having a molecular mass of 36.5 kDa.