Molecular evidence for new mutation at the hprt locus in Lesch-Nyhan patients.
Molecular evidence for new mutation at the hprt locus in Lesch-Nyhan patients.
复制标题
Lesch-Nyhan 患者 hprt 位点新突变的分子证据。
作者:
Yang,TP;Patel,PI;Chinault,AC;Stout,JT;Jackson,LG;Hildebrand,BM;Caskey,CT
Hypoxanthine-guanine phosphoribosyltransferase (HPRT; EC2.4.2.8), which functions in the metabolic salvage of purines, is encoded by an X-linked gene in man. Partial HPRT deficiencies are associated with gouty arthritis, while absence of activity results in Lesch-Nyhan syndrome (L-N). L-N patients fail to reproduce and the heterozygous state appears to confer no selective advantage1. Thus, Haldane's principle2predicts that new mutations at thehprtlocus must occur frequently in order for L-N syndrome to be maintained in the population. This constant introduction of new mutations would be expected to result in a heterogeneous collection of genetic lesions, some of which may be novel1. As we report here, the mutations in thehprtgene of seven L-N patients, selected from an initial survey of 28 patients, have been characterized and all were found to be distinctly different, as predicted. The origin of one unusual mutation has been identified by analysis of DNA from four generations of family members. Further molecular analysis of the origin of new mutations at thehprtlocus should aid in resolving the issue of an apparent difference in the frequency ofhprtmutations in males and females3–5.
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影响因子:
6.1
作者:
Eiji Takeda;George Weber
通讯作者:
Eiji Takeda;George Weber
DOI:
10.1016/0006-291x(84)90481-9
发表时间:
1984
影响因子:
3.1
作者:
Liepnieks,JJ;Faderan,MA;Lui,MS;Weber,G
通讯作者:
Weber,G
DOI:
10.1016/s0006-291x(83)80148-x
发表时间:
1983
影响因子:
3.1
作者:
Lai,MH;Weber,G
通讯作者:
Weber,G
DOI:
--
发表时间:
1982
期刊:
Cancer biochemistry biophysics
影响因子:
--
作者:
Ross,DA;Jackson,RC;Weber,G;Morris,HP
通讯作者:
Morris,HP
影响因子:
11.2
作者:
G. Weber
通讯作者:
G. Weber