👉 Tautomerism is a phenomenon where two or more molecules of a substance exhibit different chemical properties due to the presence of identical atoms but with opposite charges. This can occur in a variety of contexts, including organic compounds, polymers, and biological systems. For example, a tautomer of an enzyme, such as the nicotinamide adenine dinucleotide phosphate (NADP+), is a different molecule because it has a slightly positive charge compared to its substrate. This difference
