Evidence map›Paper›PMID 11157771›Full record

ArticleGenes & development2001

Functionally distinct, sequence-specific replicator and origin elements are required for Drosophila chorion gene amplification.

L Lu, H Zhang, J Tower

Open access · diamondAbstract read
In one paragraph

Article in Genes & development, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

33 citing papers in PubMed, 79 citations in OpenAlex.

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  12. Analysis of a Drosophila amplicon in follicle cells highlights the diversity of metazoan replication origins.Proceedings of the National Academy of Sciences of the United States of America · 2011
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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

3 authors at 1 institution in 1 country.

L LuDepartment of Biological Sciences, University of Southern California, Los Angeles, California 90089-1340, USA.
H Zhang
J Tower
University of Southern California · US

Funding

DROSOPHILA CHORION GENE AMPLIFICATIONR01GM048449 · NIGMS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI TOWER, JOHN GERARD · 1994 to 1996
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NIGMS NIH HHS GM48449
6 · The paper itself

Abstract

To meet the demand for the rapid synthesis of chorion (eggshell) proteins, Drosophila ovarian follicle cells amplify the chromosomal loci containing the chorion gene clusters up to 60-fold. Amplification occurs by repeated firing of one or more origins located within each gene cluster. Deletion analyses of transgenic constructs derived from the third chromosome cluster have identified a 320-bp amplification control element (ACE3) required for amplification, as well as several stimulatory amplification enhancing regions (AERs). Two-dimensional (2D) gel analyses have identified multiple DNA replication initiation sites (origins) that partially overlap in location with ACE3 and the AERs. To further study sequence requirements for amplification, a vector was used in which transgenic constructs are protected from chromosomal position effects by flanking insulator elements, the suppressor Hairy-wing protein binding site (SHWBS). Using the buffered vector, the 320-bp ACE3 and an 884-bp element designated ori-beta were found to be necessary and sufficient for amplification. Two-dimensional gels revealed that ori-beta was acting as the origin. In contrast, origin activity could not be detected for ACE3. An insulator placed between ACE3 and ori-beta inhibited amplification, indicating that ACE3 activates ori-beta in cis. The results suggest that ACE3 acts as a replicator and support and extend the replicator model for the organization of metazoan chromosomal replicons.

Indexed as

Gene AmplificationGenes, InsectAnimalsAnimals, Genetically ModifiedBase SequenceBinding SitesChorionDNA-Binding ProteinsDNA PrimersDNA ReplicationDrosophilaDrosophila ProteinsEgg ProteinsFemaleInsect ProteinsMultigene Familychorion proteinsDNA-Binding ProteinsDNA PrimersDrosophila ProteinsEgg ProteinsInsect ProteinsNuclear ProteinsRepressor Proteinssu(Hw) protein, Drosophila

Identifiers

PMID11157771
PMCPMC312611
OpenAlexW2099251866

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.