## Abstract Nitrosoguanidine mutagenesis of the Group A streptococcal strain K56 known as a good recipient in phageβmediated transduction led to the isolation of two recombination deficient mutants showing transduction frequencies of chromosomal markers about 100βfold lower than those of the parent
Complementation between uvr mutants of Streptococcus pyogenes
β Scribed by Malke, Horst
- Publisher
- Springer
- Year
- 1970
- Tongue
- English
- Weight
- 421 KB
- Volume
- 109
- Category
- Article
- ISSN
- 0026-8925
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
The polA gene of Streptococcus pneumoniae cloned in the recombinant plasmid pSM22 is expressed in Bacillus subtilis. Extracts of B. subtilis polA mutants containing pSM22 showed 6 times more DNA polymerase activity than extracts of wild-type cells without the plasmid. Complete complementation of the
White and red mutants of Phycomyces, derived from two independent wild types (yellow) by mutagenesis using nitrosoguanidine, either in a single step (26 whi~, 5 red mutants), or in two steps (10 white mutants, from one of the red mutants) were studied with respect to complementation in heterokaryons
Complementation experiments with temperature sensitive (ts) and suppressor sensitive (sus) mutants of bacteriophage 0X174 unambiguously revealed five cistrons on the basis of a clear bipartition of burst sizes. A new group of sus mutants (emeralds) was found, defective in a function essential for g