An E. coli B mutation, rpoB5081, that prevents growth of phage T4 strains defective in host DNA degradation.
An E. coli B mutation, rpoB5081, that prevents growth of phage T4 strains defective in host DNA degradation.
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大肠杆菌 B 突变 rpoB5081 可阻止宿主 DNA 降解缺陷的噬菌体 T4 菌株的生长。
DOI:
10.1111/j.1574-6968.1997.tb12760.x
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发表时间:
1997
影响因子:
2.1
通讯作者:
Ballard,DN
中科院分区:
文献类型:
--
作者:
Miller,ES;Shih,GC;Chang,SK;Ballard,DN
AnE. coliB Tab strain, EM121, was isolated that restricts T4denA(DNA endonuclease II) mutants at 37°C and above, but is permissive for wild-type T4 at all temperatures examined. At 42°C, other mutants affected in nucleic acid metabolism (T4dexA,regAanduvsWstrains) are also restricted. Genetic analysis revealed that one mutation (rpoB5081) in the RNA polymerase β subunit gene is sufficient for restricting alldenAmutants.rpoB5081, together with a second linked mutation, is also required for restricting the other T4 mutants.rpoB5081(P806S), previously shown to increase transcription termination inE. coliK-12, causes delayed synthesis of T4 late proteins and reduced DNA synthesis indenAinfections. Thus, T4 DNA synthesis and gene expression are impaired by therpoB5081β subunit when degradation of host DNA is reduced. Because the restricted T4 mutants are not readily distinguished from wild-type phage under typical plating conditions, EM121 is an important host for screening and mapping T4denAmutations.
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DOI:
10.1016/s0021-9258(19)44348-2
发表时间:
1973
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
D. Garbers;N. First;H. Lardy
通讯作者:
H. Lardy
DOI:
10.1042/bj2130281
发表时间:
1983
期刊:
The Biochemical journal
影响因子:
--
作者:
Qi,DF;Schatzman,RC;Mazzei,GJ;Turner,RS;Raynor,RL;Liao,S;Kuo,JF
通讯作者:
Kuo,JF
影响因子:
11.4
作者:
T. Mann
通讯作者:
T. Mann
影响因子:
3.9
作者:
Hathaway,GM;Traugh,JA
通讯作者:
Traugh,JA
影响因子:
3.6
作者:
Noland,TD;Olson,GE;Garbers,DL
通讯作者:
Garbers,DL