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概述氨基酸是组成蛋白质的基本单位.组成蛋白质的氨基酸有20多种,按其极性可分成三大类:含有二羧基一氨基的氨基酸为酸性氨基酸(如谷氨酸、天门冬氦酸);含有二氨基一羧基的氨基酸为硷性氨基酸(如赖氨酸、精氨酸等);含有一羧基一氨基的氨基酸为中性氨基酸(如甘氨酸、丙氨酸等).蛋白质是生命现象的主要物质基础,研究蛋白质中氨基酸的组成和蛋白质的构象为了解生命现象所必需.此外,游离氨基酸也具有各种重要生理功能,如神经传递介质等多属氨基酸
Overview Amino acids are the basic units of proteins that make up more than 20 amino acids that make up a protein, which can be divided into three major categories according to their polarity: amino acids that contain dicarboxyamino groups are acidic (eg, glutamic acid, aspartate) Amino-containing amino acids are basic amino acids (such as lysine, arginine, etc.); contains a carboxyl-amino amino acids are neutral amino acids (such as glycine, alanine, etc.) Protein is the main phenomenon of life Material basis to study the protein amino acid composition and protein conformation necessary to understand the phenomenon of life.In addition, free amino acids also have a variety of important physiological functions, such as neurotransmitters and other polyvalent amino acids