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MADS: MCM1, Agamous, Deficiens, and SRF (serum response factor) box family of eukaryotic transcriptonal regulators. Binds DNA and exists as hetero and homo-dimers. Composed of 2 main subgroups: SRF-like/Type I and MEF2-like (myocyte enhancer factor 2)/ Type II. These subgroups differ mainly in position of the alpha 2 helix responsible for the dimerization interface; Important in homeotic regulation in plants and in immediate-early development in animals. Also found in fungi.
Jiyao W et al.(2023). "The conserved domain database in 2023.",