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
Condit,RC
中科院分区:
医学3区
文献类型:
--
作者:
Sridhar,P;Condit,RC

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对膦酰乙酸(PAA)抗性的痘苗病毒进行了预选,分离出7株温度敏感突变株。在所有7个突变体中,PAA抗性(帕尔)和IS病变代表单独的突变。在一个突变体NG 26中,帕尔(NG 26-帕尔)和ts(NG 26-ts)突变非常紧密地连锁。NG 26-ts和NG 26-PAArMap均在HindIII E DNA片段中。NG 26在40°下具有DNA阴性表型。NG 26-ts与另一个定位于HindIII E DNA片段(R. C. Condit,A. Motyczka和G. Spizz,Virology 128,000-000,1983)。突变的顺序是(NG 26-ts)-(NG 26-PAAr-ts 2.病毒编码的DNA聚合酶已部分纯化野生型和NG 26感染的细胞。与野生型酶相比,NG 26编码的DNA聚合酶在体外具有温度敏感性和PAA抗性。
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.
痘苗病毒编码的 DNA 聚合酶的遗传证据:从感染突变病毒的细胞质中分离出抗膦酰乙酸酶
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发表时间: 1982
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DOI: 10.1016/0042-6822(78)90258-1
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