Directed genomic integration in Actinobacillus actinomycetemcomitans: generation of defined leukotoxin-negative mutants.
Directed genomic integration in Actinobacillus actinomycetemcomitans: generation of defined leukotoxin-negative mutants.
复制标题
伴放线放线杆菌中的定向基因组整合:产生确定的白细胞毒素阴性突变体。
DOI:
10.1128/iai.63.7.2780-2784.1995
复制
发表时间:
1995
影响因子:
3.1
通讯作者:
Kraig,E
中科院分区:
文献类型:
--
作者:
Kolodrubetz,D;Phillips,LH;Ezzo,PJ;Kraig,E
To develop targeted gene integration in the periodontal pathogen Actinobacillus actinomycetemcomitans, a ColE1-based, spectinomycin-resistant plasmid containing a segment of the leukotoxin gene was electroporated into strain JP2. In all of the stable spectinomycin-resistant transformants that arose, the plasmid had recombined into the genomic leukotoxin locus since ColE1-based vectors cannot replicate extrachromosomally in A. actinomycetemcomitans. Directed genomic integration was then used to construct a leukotoxin-negative strain by transforming the leukotoxin-producing strain JP2 with a ColE1-based plasmid containing an internal fragment of the leukotoxin gene. Cytotoxicity assays proved that these transformants had < 0.1% of the leukotoxin activity of the parental strain. These results demonstrate that integration-based approaches can be used for generating isogenic mutants in specific virulence genes in A. actinomycetemcomitans.
登录
查看更多内容
DOI:
10.1126/science.7046050
发表时间:
1982
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Shortle,D;Haber,JE;Botstein,D
通讯作者:
Botstein,D
影响因子:
--
作者:
Kolodrubetz,D;Kraig,E
通讯作者:
Kraig,E
影响因子:
3.2
作者:
B. Mollet;J. Knol;B. Poolman;Olivier Marciset;MICHkLE DELLEY1
通讯作者:
MICHkLE DELLEY1
影响因子:
3.1
作者:
C. Tsai;W. McArthur;P. Baehni;B. F. Hammond;N. Taichman
通讯作者:
N. Taichman
影响因子:
14.9
作者:
Guthmiller,JM;Kolodrubetz,D;Cagle,MP;Kraig,E
通讯作者:
Kraig,E