Evidence map›Paper›PMID 26901872›Full record

ArticleNature2016

Crystal structure of eukaryotic translation initiation factor 2B.

Kazuhiro Kashiwagi, Mari Takahashi, Madoka Nishimoto, Takuya B Hiyama, Toshiaki Higo, Takashi Umehara, Kensaku Sakamoto, Takuhiro Ito, Shigeyuki Yokoyama

Abstract read
PubMed Publisher
In one paragraph

Article in Nature, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed
9.7field-weighted citation impact, top 2% 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

66 citing papers in PubMed, 118 citations in OpenAlex.

  1. Article
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  3. Termination of the integrated stress response.Science (New York, N.Y.) · 2026
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6 more citing papers are in PubMed but not listed here.

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

9 authors at 2 institutions in 1 country.

Kazuhiro KashiwagiGraduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan.
Mari TakahashiRIKEN Center for Life Science Technologies, Tsurumi-ku, Yokohama 230-0045, Japan.
Madoka NishimotoRIKEN Center for Life Science Technologies, Tsurumi-ku, Yokohama 230-0045, Japan.
Takuya B HiyamaGraduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan.
Toshiaki HigoRIKEN Systems and Structural Biology Center, Tsurumi-ku, Yokohama 230-0045, Japan.
Takashi UmeharaRIKEN Systems and Structural Biology Center, Tsurumi-ku, Yokohama 230-0045, Japan.
Kensaku SakamotoRIKEN Systems and Structural Biology Center, Tsurumi-ku, Yokohama 230-0045, Japan.
Takuhiro ItoGraduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan.
Shigeyuki YokoyamaGraduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan.
Systems Biology Institute · JPThe University of Tokyo · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Eukaryotic cells restrict protein synthesis under various stress conditions, by inhibiting the eukaryotic translation initiation factor 2B (eIF2B). eIF2B is the guanine nucleotide exchange factor for eIF2, a heterotrimeric G protein consisting of α-, β- and γ-subunits. eIF2B exchanges GDP for GTP on the γ-subunit of eIF2 (eIF2γ), and is inhibited by stress-induced phosphorylation of eIF2α. eIF2B is a heterodecameric complex of two copies each of the α-, β-, γ-, δ- and ε-subunits; its α-, β- and δ-subunits constitute the regulatory subcomplex, while the γ- and ε-subunits form the catalytic subcomplex. The three-dimensional structure of the entire eIF2B complex has not been determined. Here we present the crystal structure of Schizosaccharomyces pombe eIF2B with an unprecedented subunit arrangement, in which the α2β2δ2 hexameric regulatory subcomplex binds two γε dimeric catalytic subcomplexes on its opposite sides. A structure-based in vitro analysis by a surface-scanning site-directed photo-cross-linking method identified the eIF2α-binding and eIF2γ-binding interfaces, located far apart on the regulatory and catalytic subcomplexes, respectively. The eIF2γ-binding interface is located close to the conserved 'NF motif', which is important for nucleotide exchange. A structural model was constructed for the complex of eIF2B with phosphorylated eIF2α, which binds to eIF2B more strongly than the unphosphorylated form. These results indicate that the eIF2α phosphorylation generates the 'nonproductive' eIF2-eIF2B complex, which prevents nucleotide exchange on eIF2γ, and thus provide a structural framework for the eIF2B-mediated mechanism of stress-induced translational control.

Indexed as

Amino Acid MotifsBinding SitesBiocatalysisCross-Linking ReagentsCrystallography, X-RayEukaryotic Initiation Factor-2BGuanosine DiphosphateGuanosine TriphosphateModels, MolecularPhosphorylationProtein BindingProtein BiosynthesisProtein Structure, QuaternaryProtein SubunitsSchizosaccharomycesCross-Linking ReagentsEukaryotic Initiation Factor-2BGuanosine DiphosphateGuanosine TriphosphateProtein Subunits

Identifiers

PMID26901872
OpenAlexW2283649807

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.