Thaumatin is another sweet protein derived from the African plant Thaumatococcus daniellii. Both Monellin and Thaumatin are intensely sweet proteins, yet they differ in their structures and properties. While Monellin is composed of two polypeptide chains, Thaumatin consists of a single polypeptide chain. Additionally, Thaumatin is approximately 100,000 times sweeter than sucrose, while Monellin is about 90,000 times sweeter on a molar basis.