PCR-directed formation of viral hybrids in vitro.
PCR-directed formation of viral hybrids in vitro.
复制标题
PCR 指导的体外病毒杂交体的形成。
DOI:
10.1006/viro.1996.8328
复制
发表时间:
1997
期刊:
影响因子:
--
通讯作者:
Serwer,P
中科院分区:
文献类型:
--
作者:
Khan,SA;Watson,RH;Hayes,SJ;Serwer,P
When constructing viruses that have desired hybrid phenotypes, anticipated difficulties include the nonviability of many, possibly most, of the hybrid genomes that can be constructed by incorporation of DNA fragments. Therefore, many different hybrid genomes may have to be constructed in order to find one that is viable. To perform this combinatorial work in a single experiment, we have used bacteriophage T7-infected cell extracts to transfer DNAin vitro.In an extract, we have incubated T7 DNA, together with DNA obtained by polymerase chain reaction (PCR) amplification of the gene (gene 17) for the tail fiber of the T7-related bacteriophage, T3. Afterin vitropackaging of DNA in the extract, hybrid progeny bacteriophage were detected by probing with a T3-specific oligonucleotide; hybrids are found at a frequency of 0.1%. By determination of the nucleotide sequence of the entire gene 17 of 14 independently isolated hybrids, both right and left ends of the PCR fragment are found to be truncated in all hybrids. For all 14 hybrids, the right end is in the same location; the left end is found at 3 different locations. The nonrandom location of the ends is explained by selection among different inserts for viability; that is, most of the hybrid genomes are nonviable. Some hybrids acquire from T3 the desirable phenotype of nonadherence to agarose gels during agarose gel electrophoresis.
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影响因子:
4.1
作者:
P. Serwer;S. Hayes
通讯作者:
S. Hayes
影响因子:
3.7
作者:
F. Studier
通讯作者:
F. Studier
DOI:
--
发表时间:
1990
期刊:
影响因子:
--
作者:
P. Serwer;F. Dunn
通讯作者:
F. Dunn
影响因子:
3.4
作者:
STROUD, RM;SERWER, P;ROSS, MJ
通讯作者:
ROSS, MJ
影响因子:
2.7
作者:
Carothers,AM;Urlaub,G;Mucha,J;Grunberger,D;Chasin,LA
通讯作者:
Chasin,LA