Metformin Is a Pyridoxal-5′-phosphate (PLP)-Competitive Inhibitor of SHMT2
Cancers (Basel). 2021 Aug 9;13(16):4009. doi: 10.3390/cancers13164009. ABSTRACT The anticancer actions of the biguanide metformin involve the functioning of the serine/glycine one-carbon metabolic network. We report that metformin directly and specifically targets the enzymatic activity of mitochondrial serine hydroxymethyltransferase (SHMT2). In vitro competitive binding assays with human recombinant SHMT1 and SHMT2 isoforms revealed that metformin […]






