Spontaneous unstable unc-22 IV mutations in C. elegans var. Bergerac.
Spontaneous unstable unc-22 IV mutations in C. elegans var. Bergerac.
复制标题
线虫变种中自发不稳定的 unc-22 IV 突变。
DOI:
10.1093/genetics/108.4.859
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发表时间:
1984
期刊:
影响因子:
3.3
通讯作者:
Waterston,RH
中科院分区:
文献类型:
--
作者:
Moerman,DG;Waterston,RH
This paper describes a mutator system in the nematodeCaenorhabditis elegansvar. Bergerac for the geneunc-22. Of nineC. elegansand twoC. briggsaestrains tested only the Bergerac BO strain yielded mutant animals at a high frequency and theunc-22 IVgene is a preferred mutational target. The forward spontaneous mutation frequency at theunc-22locus in Bergerac BO is about 1 × 10-4, and most of these spontaneousunc-22mutations revert at frequencies between 2 × 10-3and 2 × 10-4. Both the forward mutation frequency and the reversion frequency are sensitive to genetic background. Spontaneousunc-22mutations derived in a Bergerac background and placed in a primarily Bristol background revert at frequencies of <10-6. When reintroduced into a Bergerac/Bristol hybrid background the mutations once again become unstable.The mutator activity could not be localized to a discrete site in the Bergerac genome. Nor did mutator activity require the Bergeracunc-22gene as a target since the Bristolunc-22homolog placed in a Bergerac background also showed high mutation frequency. Intragenic mapping of two spontaneousunc-22alleles,st136andst137, place both mutations in the central region of the knownunc-22map. However, these mutations probably recombine with one another, suggesting that the unstable mutations can occur in more than one site inunc-22. Examination of the phenotypic effect of these mutations on muscle structure indicates that they are less severe in their effect than a known amber allele. We suggest that this mutator system is polygenic and dispersed over the nematode genome and could represent activity of the transposable elementTc1.
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DOI:
--
发表时间:
1975
期刊:
影响因子:
--
作者:
L. Whitehouse;D. Ecobichon
通讯作者:
D. Ecobichon
DOI:
--
发表时间:
1986
期刊:
Drug metabolism and disposition: the biological fate of chemicals
影响因子:
--
作者:
Sultatos,LG;Minor,LD
通讯作者:
Minor,LD
DOI:
10.1016/s0272-0590(83)80167-5
发表时间:
1983
期刊:
Fundamental and applied toxicology : official journal of the Society of Toxicology
影响因子:
--
作者:
Sultatos,LG;Murphy,SD
通讯作者:
Murphy,SD
影响因子:
6.1
作者:
S. N. Lin;C. Y. Chen;S. D. Murphy;R. Caprioli
通讯作者:
R. Caprioli
DOI:
--
发表时间:
1968
期刊:
Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine
影响因子:
--
作者:
K. P. Dubois;F. Kinoshita
通讯作者:
F. Kinoshita