2.9 | 合法醫療器材資訊網

2021年3月24日—Biuretreagentisanalkalinesolutionof1%CuSO4,coppersulfate.Thevioletcolorisapositivetestforthepresenceofprotein,andthe ...

Proteins provide much of the structural and functional capacity of cells. Proteins are composed of monomers called amino acids. Amino Acids are hydrocarbons that have an amino group (-NH2) and an acidic carboxyl group (-COOH). The R group represents a hydrocarbon chain with a modification that alters the properties of the amino acid. 20 universal amino acids are used to construct proteins. The variation in functional groups along the amino acid chain gives rise to the functional diversity of proteins.

20 amino acids and their properties. A 21st amino acid on this table represents the non-universally found selenocysteine.

Monomers bond together through a dehydration synthesis reaction between adjacent amino and carboxyl groups to yield a peptide bond.