l-alanine is a neutral, genetically coded amino acid . it is a crystalline amino acid, that is a constituent of many proteins 丙氨酸是一種晶體狀的中性氨基酸,是許多蛋白質的組成成份。
l-cysteine is a non-essential ( or semi-essential ), neutral, genetically coded amino acid, derived from cystine and found in most proteins 半胱氨酸是一種中性氨基酸,從胱氨酸中提取,并存在于大多數(shù)蛋白質中。
l-aspartic acid is a non-essential, acidic, genetically coded amino acid . found especially in young sugar cane and sugar-beet molasses 天冬氨酸是一種非必需的酸性氨基酸,尤指從小的甘蔗和甜菜的糖蜜中提取的。
l-histidine is a basic, genetically coded amino acid . it is essential for human development ( " semi-essential " ), and important for the growth and repair of tissues 組氨酸是一種堿性氨基酸,對于組織的生成和修復具有很重要的作用。
l-asparagine is a non-essential, neutrall, genetically coded amino acid . it is a crystalline amino acid, found in many plants, that is easily hydrolyzed to aspartic acid 天冬酰胺是一種非必需的中性晶體氨基酸,許多植物里都有,易于水解為天門冬氨酸。