AN IMPROVED BETA-GALACTOSIDASE ALPHA-COMPLEMENTATION SYSTEM FOR MOLECULAR-CLONING IN BACILLUS-SUBTILIS

被引:28
作者
HAIMA, P
VANSINDEREN, D
BRON, S
VENEMA, G
机构
[1] CTR BIOL SCI,DEPT GENET,KERKLAAN 30,9751 NN HAREN,NETHERLANDS
[2] CTR BIOL SCI,DEPT MICROBIOL,9751 NN HAREN,NETHERLANDS
关键词
chromosomal integration; lacZ gene; Recombinant DNA; structural plasmid stability; translation efficiency;
D O I
10.1016/0378-1119(90)90133-C
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
The recently described β-galactosidase α-complementation system for molecular cloning in Bacillus subtilis [Haima et al., Gene 86 (1990) 63-69] was optimized in several ways. First, the efficiency of translation of the lacZΔM15 gene was improved. Second, the plasmid-borne lacZΔM15 gene was segregationally stabilized by integration into the B. subtilis chromosome. Third, a new lacZα complementing cloning vector was constructed, containing more unique target sites. It was shown that large heterologous DNA fragments (up to at least 29 kb) could be cloned with lacZα-complementing vectors carrying the replication functions of the cryptic B. subtilis plasmid pTA1060, and that these inserts were structurally stably maintained for at least 100 generations of growth. © 1990.
引用
收藏
页码:41 / 47
页数:7
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