The biosynthesis of amino acids in beer yeast is mainly adjusted by DAHP synthetase, chorismate synthetase, chorismate mutase, anthranilate synthetase, prephenic acid dehydrase and prephenic acid dehydrogenase. 在啤酒酵母中芳香族氨基酸生物合成主要受DAHP合成酶、分支酸合成酶、分支酸变位酶、邻氨基苯甲酸合成酶、预苯酸脱水酶和预苯酸脱氢酶的调节;