Evidence map›Paper›PMID 19620394›Full record

ArticleGenetics2009

Distinctive responses to nitrogen starvation in the dominant active mutants of the fission yeast Rheb GTPase.

Tomoka Murai, Yukiko Nakase, Keiko Fukuda, Yuji Chikashige, Chihiro Tsutsumi, Yasushi Hiraoka, Tomohiro Matsumoto

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In one paragraph

Article in Genetics, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
0.9field-weighted citation impact, top 26% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 30 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

7 authors at 3 institutions in 1 country.

Tomoka MuraiDepartment of Biostudies, Kyoto University, Kyoto, Japan.
Yukiko Nakase
Keiko Fukuda
Yuji Chikashige
Chihiro Tsutsumi
Yasushi Hiraoka
Tomohiro Matsumoto
Kyoto University · JPNational Institute of Information and Communications Technology · JPOsaka University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Rheb, a Ras-like small GTPase conserved from human to yeast, controls Tor kinase and plays a central role in the regulation of cell growth depending on extracellular conditions. Rhb1 (a fission yeast homolog of Rheb) regulates amino acid uptake as well as response to nitrogen starvation. In this study, we generated two mutants, rhb1-DA4 and rhb1-DA8, and characterized them genetically. The V17A mutation within the G1 box defined for the Ras-like GTPases was responsible for rhb1-DA4 and Q52R I76F within the switch II domain for rhb1-DA8. In fission yeast, two events--the induction of the meiosis-initiating gene mei2+ and cell division without cell growth--are a typical response to nitrogen starvation. Under nitrogen-rich conditions, Rheb stimulates Tor kinase, which, in turn, suppresses the response to nitrogen starvation. While amino acid uptake was prevented by both rhb1-DA4 and rhb1-DA8 in a dominant fashion, the response to nitrogen starvation was prevented only by rhb1-DA4. rhb1-DA8 thereby allowed genetic dissection of the Rheb-dependent signaling cascade. We postulate that the signaling cascade may branch below Rhb1 or Tor2 and regulate the amino acid uptake and response to nitrogen starvation independently.

Indexed as

MutationAmino Acid SequenceBlotting, WesternCell DivisionGenes, DominantMolecular Sequence DataMonomeric GTP-Binding ProteinsNitrogenPhosphatidylinositol 3-KinasesSchizosaccharomycesSchizosaccharomyces pombe ProteinsSequence Homology, Amino AcidSignal TransductionSuppression, GeneticMonomeric GTP-Binding ProteinsNitrogenPhosphatidylinositol 3-KinasesRheb protein, S pombeSchizosaccharomyces pombe Proteinstor2 protein, S pombeTsc2 protein, S pombe

Identifiers

PMID19620394
PMCPMC2766313
OpenAlexW2065700634

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.