Evidence map›Paper›PMID 15185094›Full record

ArticleChromosoma2004

Molecular mapping of deletion breakpoints on chromosome 4 of Drosophila melanogaster.

Lynn Podemski, Rui Sousa-Neves, J Lawrence Marsh, John Locke

Abstract read
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Article in Chromosoma, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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3 · Its place in the literature

Who cites it

4 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Lynn PodemskiDepartment of Biological Sciences, University of Alberta, T6G 2E9, Edmonton, AB, Canada.
Rui Sousa-Neves
J Lawrence Marsh
John Locke

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

As part of our effort to induce and identify mutations in all genes on chromosome 4 of Drosophila melanogaster, we have mapped the breakpoints of eight chromosome 4 deficiencies relative to the predicted genes along this chromosome. Although the approximate locations of Df(4)G, Df(4)C3, Df(4)M101-62f, Df(4)M101-63a, Df(4)J2, Df(4)O2, Df(4)C1-10AT, and Df(4)B2-2D are known (some from cytological observations and others predicted from P element locations), the extents of these deletions have not been mapped with respect to the predicted genes identified by the Drosophila Genome Project. Polymerase chain reaction primers were designed to amplify the predicted exons of all chromosome 4 genes, and homozygous embryos for each deficiency were identified and their DNA used to test for the presence or absence of these exons. By testing for the inability to amplify various exons along the length of the chromosome, we were able to determine which predicted genes are missing in each deficiency. The five deficiencies, Df(4)G, Df(4)C3, Df(4)C1-10AT, and Df(4)B2-20 (all terminal deletions), and Df(4)M101-62f (a proximal interstitial deletion), enabled us to partition the gene-containing, right arm of chromosome 4 into five regions. Region A [uncovered by Df(4)M101-62f] contains the proximal-most 21 genes; region B [uncovered by Df(4)B2-2D] contains the next 12 genes; region C [uncovered by Df(4)B2-2D and Df(4)C1-10AT] contains the next 17 genes; region D [uncovered by Df(4)B2-2D, Df(4)C1-10AT, and Df(4)C3] contains the next 21 genes; and region E [uncovered by Df(4)B2-2D, Df(4)C1-10AT, Df(4)C3, and Df(4)G] contains the distal-most ten genes. By using Df(4)M101-62f, Df(4)B2-2D, Df(4)C1-10AT, Df(4)C3, and Df(4)G in complementation tests, we can assign newly induced recessive lethal mutations to one of the five regions on chromosome 4. This will substantially reduce the amount of DHPLC analysis required to match each mutation to a predicted transcript on chromosome 4.

Indexed as

Chromosome BreakageChromosome DeletionAnimalsChromatography, High Pressure LiquidChromosome MappingDrosophila melanogasterFemaleGenes, InsectGenes, LethalGenes, RecessiveGenetic Complementation TestHomozygoteMaleMutation

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.