Malic enzyme-based system for transhydrogenation between nicotinamide cofactors.

ABSTRACT: The nicotinamide cofactors including nicotinamide adenine dinucleotide (NAD) and its phosphate (NADP) play important roles in facilitating redox reactions for energy metabolism and biosynthesis. To expand the cofactor menu, a non-natural cofactor nicotinamide cytosine dinucleotide (NCD) has been introduced recently. The reduced forms of these cofactors carry reducing equivalents that are essential for cellular metabolism. However, there is a long standing challenge to rationally transfer reducing equivalent from one cofactor to another, albeit such process is highly demanding in metabolic engineering. This study develops a new approach based on malic enzyme (ME)-mediated transhydrogenation to enable reducing equivalents exchange among different cofactors. We used wild-type ME, MaeB and an

SUBMITTER: Xue H 

PROVIDER: S-EPMC12492669 | biostudies-literature | 2026 Mar

REPOSITORIES: biostudies-literature