auxotrophy

auxotrophy

1

Results : A DAP auxotrophy recombinant bacterium strain was obtained .

结果：建立了一株二氨基庚二酸（DAP）营养缺陷型重组大肠杆菌DH10BΔasd。
2

The panD mutant of E. coli is β - alanine auxotrophy .

大肠杆菌panD基因突变体为β-丙氨酸营养缺陷型。
3

With high transformation frequency and easy to obtain transformants , the uridine auxotrophy is widely used in the genetic transformation systems of filamentous fungus .

尿嘧啶营养缺陷型标记具有转化效率高、容易得到转化子等优点，在丝状真菌遗传转化中受到青睐。
4

Methionine synthase is a key enzyme in homocysteine metabolism . The defects of methionine synthase activity could result in hyperhomocysteinemia and methionine auxotrophy .

甲硫氨酸合酶是同型半胱氨酸代谢的关键酶，其活性缺失可能会导致同型半胱氨酸蓄积及甲硫氨酸缺陷。