Evidence map›Paper›PMID 9215899›Full record

ArticleGenetics1997

A new enhancer of position-effect variegation in Drosophila melanogaster encodes a putative RNA helicase that binds chromosomes and is regulated by the cell cycle.

D F Eberl, L J Lorenz, M B Melnick, V Sood, P Lasko, N Perrimon

Open access · bronzeAbstract read
In one paragraph

Article in Genetics, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
0.7field-weighted citation impact, top 31% of its field
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

13 citing papers in PubMed, 39 citations in OpenAlex.

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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

6 authors at 2 institutions in 2 countries.

D F EberlDepartment of Genetics, Harvard Medical School, Boston, Massachusetts 02115, USA. eberl@rascal.med.harvard.edu
L J Lorenz
M B Melnick
V Sood
P Lasko
N Perrimon
Harvard University · USMcGill University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In Drosophila melanogaster, position-effect variegation of the white gene has been a useful phenomenon by which to study chromosome structure and the genes that modify it. We have identified a new enhancer of variegation locus, Dmrnahel (hel). Deletion of mutation of hel enhances white variegation, and this can be reversed by a transformed copy of hel+. In the presence of two endogenous copies, the transformed hel+ behaves as a suppressor of variegation. hel is an essential gene and functions both maternally and zygotically. The HEL protein is similar to known RNA helicases, but contains an unusual variant (DECD) of the DEAD motif common to these proteins. Potential HEL homologues have been found in mammals, yeast and worms. HEL protein associates with salivary gland chromosomes and locates to nuclei of embryos and ovaries, but disappears in mitotic domains of embryos as chromosomes condense. We propose that the HEL protein promotes an open chromatin structure that favors transcription during development by regulating the spread of heterochromatin, and that HEL is regulated by, and may have a role in, the mitotic cell cycle during embryogenesis.

Indexed as

Enhancer Elements, GeneticAmino Acid SequenceAnimalsBase SequenceCell CycleCell NucleusChromosomesCloning, MolecularDEAD-box RNA HelicasesDrosophila melanogasterDrosophila ProteinsFemaleGene Expression Regulation, EnzymologicGenes, InsectMaleMitosisDEAD-box RNA HelicasesDrosophila ProteinsHel25E protein, DrosophilaRNA HelicasesRNA Nucleotidyltransferases

Identifiers

PMID9215899
PMCPMC1208063
OpenAlexW1846842297

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.