Evidence map›Paper›PMID 26647184›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2015

period-1 encodes an ATP-dependent RNA helicase that influences nutritional compensation of the Neurospora circadian clock.

Jillian M Emerson, Bradley M Bartholomai, Carol S Ringelberg, Scott E Baker, Jennifer J Loros, Jay C Dunlap

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
1.5field-weighted citation impact, top 20% 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

25 citing papers in PubMed, 35 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. A Compensated Clock: Temperature and Nutritional Compensation Mechanisms Across Circadian Systems.BioEssays : news and reviews in molecular, cellular and developmental biology · 2025
    Review
  7. Article
  8. Circadian regulation of metabolism across photosynthetic organisms.The Plant journal : for cell and molecular biology · 2023
    Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Article
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 1 country.

Jillian M EmersonDepartment of Genetics, Geisel School of Medicine at Dartmouth, Hanover, NH 03755;
Bradley M BartholomaiDepartment of Genetics, Geisel School of Medicine at Dartmouth, Hanover, NH 03755;
Carol S RingelbergDepartment of Genetics, Geisel School of Medicine at Dartmouth, Hanover, NH 03755;
Scott E BakerEnvironmental Molecular Sciences Laboratory, Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354;
Jennifer J LorosDepartment of Genetics, Geisel School of Medicine at Dartmouth, Hanover, NH 03755; Department of Biochemistry, Geisel School of Medicine at Dartmouth, Hanover, NH 03755.
Jay C DunlapDepartment of Genetics, Geisel School of Medicine at Dartmouth, Hanover, NH 03755; jay.c.dunlap@dartmouth.edu.
Dartmouth College · USPacific Northwest National Laboratory · US

Funding

Genetic and Molecular Dissection of the Neurospora ClockR35GM118021 · NIGMS · DARTMOUTH COLLEGE · PI Jay C. Dunlap · 2016 to 2026
$7.3M
Identification and Analysis of Circadian Clock-Controlled GenesR01GM083336 · NIGMS · DARTMOUTH COLLEGE · PI LOROS, JENNIFER J. · 2008 to 2015
$5.7M
GENETIC AND MOLECULAR DISSECTION OF THE NEUROSPORA CLOCKR01GM034985 · NIGMS · DARTMOUTH COLLEGE · PI DUNLAP, JAY C. · 1986 to 2015
$5.7M
GENETIC AND MOLECULAR DISSECTION OF THE NEUSPORA CLOCKR37GM034985 · NIGMS · DARTMOUTH COLLEGE · PI DUNLAP, JAY C · 1998 to 2007
$4.4M
NIGMS NIH HHS GM083336NIGMS NIH HHS GM34985NIGMS NIH HHS R01 GM034985NIGMS NIH HHS R01 GM083336NIGMS NIH HHS R35 GM118021NIGMS NIH HHS R37 GM034985
6 · The paper itself

Abstract

Mutants in the period-1 (prd-1) gene, characterized by a recessive allele, display a reduced growth rate and period lengthening of the developmental cycle controlled by the circadian clock. We refined the genetic location of prd-1 and used whole genome sequencing to find the mutation defining it, confirming the identity of prd-1 by rescuing the mutant circadian phenotype via transformation. PRD-1 is an RNA helicase whose orthologs, DDX5 [DEAD (Asp-Glu-Ala-Asp) Box Helicase 5] and DDX17 in humans and DBP2 (Dead Box Protein 2) in yeast, are implicated in various processes, including transcriptional regulation, elongation, and termination, ribosome biogenesis, and mRNA decay. Although prd-1 mutants display a long period (∼25 h) circadian developmental cycle, they interestingly display a WT period when the core circadian oscillator is tracked using a frq-luciferase transcriptional fusion under conditions of limiting nutritional carbon; the core oscillator in the prd-1 mutant strain runs with a long period under glucose-sufficient conditions. Thus, PRD-1 clearly impacts the circadian oscillator and is not only part of a metabolic oscillator ancillary to the core clock. PRD-1 is an essential protein, and its expression is neither light-regulated nor clock-regulated. However, it is transiently induced by glucose; in the presence of sufficient glucose, PRD-1 is in the nucleus until glucose runs out, which elicits its disappearance from the nucleus. Because circadian period length is carbon concentration-dependent, prd-1 may be formally viewed as a clock mutant with defective nutritional compensation of circadian period length.

Indexed as

Adenosine TriphosphateAmino Acid SequenceCarbonCircadian ClocksGlucoseMolecular Sequence DataNeurospora crassaPeriod Circadian ProteinsRNA HelicasesAdenosine TriphosphateCarbonGlucosePeriod Circadian ProteinsRNA HelicasescircadianDbp2pDDX5FRQRNA helicase

Identifiers

PMID26647184
PMCPMC4697410
OpenAlexW2199628131

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.