Cloning and molecular characterization of a metabolic gene with development functions in Drosophila. I. Analysis of the head function of Punch.

Cloning and molecular characterization of a metabolic gene with development functions in Drosophila. I. Analysis of the head function of Punch.
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果蝇中具有发育功能的代谢基因的克隆和分子表征。

DOI:
10.1093/genetics/126.4.1007
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发表时间:
1990
期刊:
影响因子:
3.3
通讯作者:
O'Donnell,J
O'Donnell,J
中科院分区:
生物学2区
文献类型:
--
作者:
McLean,JR;Boswell,R;O'Donnell,J

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为了了解翼素在整个发育过程中的功能,我们研究了黑腹果蝇GTP环水解酶的结构基因Punch (Pu)。这种酶催化了蝶呤生物合成途径的第一步。Pu基因产物在胚胎发生的两个不同阶段的重要功能和年轻成人眼睛的色素沉着功能中都是必需的。我们通过分析Pu突变体中存在的病变,将Pu区域定位在29 kb的DNA上。由于绘制的所有突变都影响了Pu的眼睛色素沉着功能,并且由于这种功能是最好的生化定义,因此我们在克隆区域的初步检查中集中于识别和表征眼睛色素沉着所需的Pu产物。来自该区域的四种不同的转录本在成人头部中表达。通过对突变转录本的分析和体外翻译试验,我们发现其中一个1.7 kb的转录本负责色素沉着功能。位于基因座内的2kb区域是这种眼睛色素沉着功能所特别需要的。
In an effort to understand the functions of pterins throughout development we have been studying Punch (Pu), the structural gene for the enzyme GTP cyclohydrolase in Drosophila melanogaster. This enzyme catalyzes the first step in the pterin biosynthetic pathway. The Pu gene product is required for vital functions at two distinct stages in embryogenesis, and a pigmentation function in the eye of the young adult. We have localized the Pu region to 29 kb of DNA through the analysis of lesions present in Pu mutants. Since all of the mutations that were mapped affect the eye pigmentation function of Pu, and since this function is the best defined biochemically, we have concentrated on identifying and characterizing Pu products required for eye pigmentation in our initial examination of the cloned region. Four different transcripts from this region are expressed in the adult head. We show that one of these transcripts, the 1.7-kb species, is responsible for the pigmentation function through the analysis of mutant transcripts and the use of an in vitro translation assay. A 2-kb region lying within the locus is specifically required for this eye pigmentation function.
DOI: 10.1093/genetics/105.1.35
发表时间: 1983-09
期刊: Genetics
影响因子: 3.3
作者:
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通讯作者: W. Mackay;J. O'donnell
DOI: 10.1016/0012-1606(87)90401-5
发表时间: 1987
影响因子: 2.7
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发表时间: 1987
期刊: Genetics
影响因子: 3.3
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DOI: --
发表时间: 1981
期刊: Cell
影响因子: 64.5
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