👉 In physics, an excitation nucleotide is a type of nucleotide that can be excited by a photon. Excitons are quantum states in which electrons and positrons have opposite spin but same energy. They are often used to describe transitions between electronic states in molecules or atoms. Excitonutrients are other types of excitation nucleotides, such as the amino acid glutamine (Glu) that has two excitonutrients: GluO2- and GluO3
