Selection for temperature-sensitive mutations in specific vaccinia virus genes: isolation and characterization of a virus mutant which encodes a phosphonoacetic acid-resistant, temperature-sensitive DNA polymerase.
Selection for temperature-sensitive mutations in specific vaccinia virus genes: isolation and characterization of a virus mutant which encodes a phosphonoacetic acid-resistant, temperature-sensitive DNA polymerase.
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选择特定痘苗病毒基因中的温度敏感突变:编码抗膦酰乙酸、温度敏感 DNA 聚合酶的病毒突变体的分离和表征。
DOI:
10.1016/0042-6822(83)90269-6
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发表时间:
1983
期刊:
影响因子:
3.7
通讯作者:
Condit,RC
中科院分区:
文献类型:
--
作者:
Sridhar,P;Condit,RC
Seven temperature-sensitive mutants of vaccinia virus have been isolated after preselection for virus resistant to phosphonoacetic acid (PAA). In all seven mutants, the PAA-resistant (PAAr) and is lesions represent separate mutations. In one mutant, NG26, the PAAr(NG26-PAAr) and ts (NG26-ts) mutations are very closely linked. Both NG26-ts and NG26-PAArMap in theHindIII E DNA fragment. NG26 has a DNA-negative phenotype at 40°. NG26-ts is in the same complementation group as ts42, another DNA-negative mutant which maps in theHindIII E DNA fragment (R. C. Condit, A. Motyczka, and G. Spizz,Virology128, 000-000, 1983). The order of the mutations is (NG26-ts)-(NG26-PAAr-ts2. The virus-coded DNA polymerase has been partially purified from wt- and NG26-infected cells. The DNA polymerase encoded by NG26 is temperature sensitive and PAA resistantin vitroas compared to the wt enzyme.
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