a crystalline substance, CHNO, present in muscle tissue, usually in the form of phosphocreatine
Origin of creatinefrom Classical Greek kreas, flesh (see crude) + -ine
A compound, C4H9N3O2, that is found in the muscle tissue of vertebrates mainly in the form of phosphocreatine and that is involved in the storing and supplying energy for muscle contraction.
Origin of creatineFrench créatine from Greek kreas kreat- flesh ; see kreuə- in Indo-European roots.
- Not an α-amino acid