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Selective NNMT inhibitor substrate site-targeting mechanism with IC50 of 1.2 M in reference assay conditions Selectivity over related methyltransferases does not significantly affect other enzymes in the NAD salvage pathway at research concentrations Reduces intracellular 1-methylnicotinamide (1-MNA) formation in cell-based assay models Studied in adipocyte, liver, and skeletal muscle cell-based research models examining NNMT-dependent methylation pathway dynamics Referenced at Sigma-Aldrich (SML2832) and in peer-reviewed literature on NNMT enzyme biology Membrane-permeable quaternary quinolinium scaffold studied for intracellular NNMT target engagement in cell-based models Batch and lot identifiers on all labeling for full laboratory documentation compliance Research Background 5-Amino-1MQ was first characterized as a selective NNMT inhibitor in published research literature in 2018

PMID 32053765

Adv Nutr

37 C in a CO 2 incubator) hECs (P6) were seeded (2 10 4 cells/insert) to the upper (blood) side of the membranes

These publications help frame GHK-Cu as a biologically active copper-binding peptide rather than as an established treatment for every claimed use