蛋白质是生命的物质基础,所有的生命活动都离不开蛋白质。正常人体内约含16%～19%的蛋白质,这些蛋白质始终处于不断地分解合成的动态平衡中,以达到组织蛋白不断更新和修复的目的。一、生理功能构成人体组织成分、调节生理功能、供给能量是蛋白质重要的生理功能。除具有以上功能外,某些氨基酸及其代谢产物还具有特殊的生理功能,如蛋氨酸是体内最重要的甲基供体,很多含 Protein is the material basis of life, all life activities are inseparable from the protein. Normal human body contains about 16% to 19% of the protein, the protein is always in the decomposition of the synthesis of dynamic equilibrium, in order to achieve the purpose of continuous renewal and repair of tissue proteins. First, the physiological function of human tissue composition, regulating physiological functions, energy supply is an important protein physiological function. In addition to these features, some amino acids and their metabolites also have special physiological functions, such as methionine is the body’s most important methyl donor, many containing