GENETIC-ANALYSIS OF REC-E ACTIVITIES IN BACILLUS-SUBTILIS

被引:33
作者
CEGLOWSKI, P [1 ]
LUDER, G [1 ]
ALONSO, JC [1 ]
机构
[1] MAX PLANCK INST MOLEC GENET,IHNESTR 73,W-1000 BERLIN 33,GERMANY
来源
MOLECULAR & GENERAL GENETICS | 1990年 / 222卷 / 2-3期
关键词
DNA repair; recE: :cat allele -rec[!sup]-[!/sup] mutant strains; Recombination;
D O I
10.1007/BF00633853
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
A recE mutant (recE6) of Bacillus subtilis was constructed by insertion of a selectable marker into the recE coding region. The insertional inactivation of the recE gene renders cells very sensitive to DNA damaging agents and severely impairs intermolecular recombination, but does not markedly affect plasmid interstrand annealing and intramolecular recombination. The recE6 allele was then introduced into a set of DNA repair-deficient strains of B. subtilis. The removal of DNA damage by the recF, addA addB, recH, recL and recP gene products is strictly dependent on an active recE gene product (recE-dependent pathway). On the other hand, the increased sensitization to purine adducts in the uvrA42 recE6 and polA5 recE6 strains suggests that such lethal lesions may be removed either by the recE-dependent or by the recE-independent pathway. © 1990 Springer-Verlag.
引用
收藏
页码:441 / 445
页数:5
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