Tissue-specific and complex complementation patterns in the Punch locus of Drosophila melanogaster.

Tissue-specific and complex complementation patterns in the Punch locus of Drosophila melanogaster.
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果蝇 Punch 基因座的组织特异性和复杂的互补模式。

DOI:
10.1093/genetics/111.4.885
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发表时间:
1985
期刊:
影响因子:
3.3
通讯作者:
O'Donnell,JM
O'Donnell,JM
中科院分区:
生物学2区
文献类型:
--
作者:
Mackay,WJ;Reynolds,ER;O'Donnell,JM

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Punch 位点的突变会导致 GTP 环化水解酶活性丧失,但所有突变不会以相同的方式影响该酶。 Punch 突变至少分为三类。一类导致显性眼睛颜色、隐性致死表型。第二类突变也会导致隐性致死表型,但杂合突变体具有正常的眼睛颜色。它们显示出所有可测量活性的组织中 GTP 环水解酶功能的丧失。构成第三类的等位基因是纯合可行的隐性眼睛颜色突变。具有第三种突变的个体在眼睛中表现出酶活性丧失,但在其他部位表现出正常或接近正常的活性。为了进一步检查该位点的组织和功能,我们对 25 个 Punch 突变进行了等位基因间互补测试,监测预蛹和成虫的活力和酶活性。大多数等位基因组合都是致命的。那些互补的方式以组织或阶段特异性且不可预测的方式进行。对具有组织特异性表型的突变体和补充 Punch 致死等位基因的个体突变体的测试使我们得出结论,Punch 是一个复杂的基因座,无论是就其组织还是其产物而言。
Mutations in the Punch locus result in loss of GTP cyclohydrolase activity, but all mutations do not affect the enzyme in the same way. There are at least three classes of Punch mutations. One class results in a dominant eye color, recessive lethal phenotype. A second class of mutations also causes a recessive lethal phenotype, but heterozygous mutants have normal eye color. They show loss of GTP cyclohydrolase function in all tissues where activity can be measured. Alleles comprising a third class are recessive eye color mutations that are homozygous viable. Individuals with this third type of mutation show loss of enzyme activity in the eye, but show normal or near-normal activity elsewhere. In order to examine the organization and function of this locus further, we have performed interallelic complementation tests on 25 Punch mutations, monitoring viability and enzyme activity in prepupae and adults. Most allele combinations are lethal. Those that complement do so in ways that are tissue-or stage-specific and unpredictable. Tests of mutants with tissue-specific phenotypes and of individuals mutant for complementing Punch lethal alleles lead us to conclude that Punch is a complex locus, both with respect to its organization and to its products.
DOI: --
发表时间: 1973
期刊:
影响因子: --
作者:
C. Ragan;E. Racker
通讯作者: E. Racker
DOI: 10.1073/pnas.63.2.384
发表时间: 1969-01-01
影响因子: 11.1
作者:
GUTHRIE, C;NASHIMOTO, H;NOMURA, M
通讯作者: NOMURA, M
蝶啶的生物合成。
DOI: 10.1002/9780470122808.ch2
发表时间: 1971
期刊: Advances in enzymology and related areas of molecular biology
影响因子: --
作者:
G. M. Brown
通讯作者: G. M. Brown
DOI: 10.1016/0092-8674(85)90061-3
发表时间: 1985-01-01
期刊: CELL
影响因子: 64.5
作者:
KARLIK, CC;FYRBERG, EA
通讯作者: FYRBERG, EA
DOI: 10.1093/genetics/106.3.423
发表时间: 1984
期刊: Genetics
影响因子: 3.3
作者:
T. W. Lyttle
通讯作者: T. W. Lyttle