(1)蛋白质是人体组织的主要成分。人体蛋白质含量约占人体总固体含量的45%,人体的一切组织都由蛋白质组成,有许多具有重要生理作用的物质如果没有蛋白质的参与就不能起作用。如酶类、激素、免疫蛋白、肌肉收缩的肌动蛋白、构成机体组织支架的胶原蛋白等。另外,体内酸碱平衡的维 (1) Proteins are the main components of human tissues. Human protein content accounts for about 45% of the total human body solids, all tissues of the body are composed of proteins, there are many important physiological role of substances without the participation of the protein can not play a role. Such as enzymes, hormones, immune proteins, muscle contracting actin, constituting the body tissue scaffold collagen. In addition, the body acid-base balance of Victoria