Weichenhan D, Wackernagel W
Fachbereich Biologie, Universität Oldenburg, Federal Republic of Germany.
J Bacteriol. 1988 Mar;170(3):1412-4. doi: 10.1128/jb.170.3.1412-1414.1988.
We cloned chromosomal DNA fragments from Proteus mirabilis which complement recBCD deletion mutants of Escherichia coli by restoring (i) recombination proficiency in conjugation, (ii) normal resistance to UV irradiation, and (iii) ATP-dependent exonuclease activity for duplex DNA. The data indicate that the order of the genes thyA, recC, recB, recD, and argA is similar in both P. mirabilis and E. coli. Hybrid enzymes formed in vivo were active in repair and recombination.
我们从奇异变形杆菌中克隆了染色体DNA片段,这些片段通过恢复(i)接合中的重组能力、(ii)对紫外线照射的正常抗性以及(iii)双链DNA的ATP依赖性核酸外切酶活性,来互补大肠杆菌的recBCD缺失突变体。数据表明,thyA、recC、recB、recD和argA基因在奇异变形杆菌和大肠杆菌中的顺序相似。体内形成的杂合酶在修复和重组中具有活性。