Evidence map›Paper›PMID 42342668›Full record

ArticleNature communications2026

Structural mechanism of SAM-AMP and SAM-AMP

Yoshihisa Mitsuda, Maki Sugaya, Junichiro Ishikawa, Naoto Nagahata, Sae Okazaki, Masahiro Hiraizumi, Kazuki Kato, Jonathan S Gootenberg, Omar O Abudayyeh, Tsuyoshi Osawa and 2 more

Abstract read
In one paragraph

Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing 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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

12 authors.

Yoshihisa MitsudaDepartment of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan.
Maki SugayaResearch Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, Japan.
Junichiro IshikawaDepartment of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan.ORCID 0000-0003-4112-4168
Naoto NagahataDepartment of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan.
Sae OkazakiResearch Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, Japan.
Masahiro HiraizumiDepartment of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan.ORCID 0000-0002-4340-2937
Kazuki KatoMechanistic Immunology Research Unit, Institute of Integrated Research, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo, Japan.ORCID 0000-0003-1141-0059
Jonathan S GootenbergDepartment of Medicine, Division of Engineering in Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, USA.
Omar O AbudayyehDepartment of Medicine, Division of Engineering in Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, USA.
Tsuyoshi OsawaDepartment of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan.ORCID 0000-0002-9479-6665
Keitaro YamashitaResearch Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, Japan.ORCID 0000-0002-5442-7582
Hiroshi NishimasuDepartment of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan. nisimasu@g.ecc.u-tokyo.ac.jp.ORCID 0000-0002-2505-1416

Funding

MEXT | Japan Society for the Promotion of Science (JSPS) 25H00436
6 · The paper itself

Abstract

The type III-D2 CRISPR-Cas system comprises multiple Cas subunits and a CRISPR RNA, and is likely an evolutionary intermediate between the well-studied type III-A and III-E systems. Here we show that the type III-D2 complex synthesizes two distinct second messengers, SAM-AMP and SAM-AMP

Indexed as

CRISPR-Associated ProteinsCRISPR-Cas SystemsS-AdenosylmethionineAdenosine TriphosphateCryoelectron MicroscopyEscherichia coliEscherichia coli ProteinsAdenosine TriphosphateCRISPR-Associated ProteinsEscherichia coli ProteinsS-Adenosylmethionine

Identifiers

PMID42342668
PMCPMC13294483

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.