L-phenylalanine producing microorganisms, which have been constructed by introducing a recombinant plasmid DNA inserted with a chromosomal DNA fragment controlling the resistance to a phenylalanine-antagonist obtained from a mutant of the genus Bacillus resistant to the phenylalanine antagonist, into a recipient strain of the genus Bacillus, produce L-phenylalanine in higher yield than the mutants used as the DNA-donor or the recipient strain.
通过将插入了控制对苯丙
氨酸拮抗剂的抗性的染色体 DNA 片段的
重组质粒 DNA 导入芽孢杆菌属的受体菌株,构建了生产
L-苯丙氨酸的微
生物,与用作 DNA 供体或受体菌株的突变体相比,这些微
生物生产
L-苯丙氨酸的产量更高。