Evidence map›Paper›PMID 34312234›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2021

Multicomponent nature underlies the extraordinary mechanical properties of spider dragline silk.

Nobuaki Kono, Hiroyuki Nakamura, Masaru Mori, Yuki Yoshida, Rintaro Ohtoshi, Ali D Malay, Daniel A Pedrazzoli Moran, Masaru Tomita, Keiji Numata, Kazuharu Arakawa

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
5.6field-weighted citation impact, top 3% 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

38 citing papers in PubMed, 93 citations in OpenAlex.

  1. Toughening Artificial Spider Silk via Glue-Like Nanoparticle Crosslinks.Advanced materials (Deerfield Beach, Fla.) · 2026
    Article
  2. Article
  3. Spider silk-based structural proteins as tough, biodegradable, and sustainable polymers.Proceedings of the Japan Academy. Series B, Physical and biological sciences · 2026
    Review
  4. Nanostructured Protein Surfaces Inspired by Spider Silk.Advanced materials (Deerfield Beach, Fla.) · 2025
    Review
  5. Article
  6. Article
  7. Spider Eye Development Editing and Silk Fiber Engineering Using CRISPR-Cas.Angewandte Chemie (International ed. in English) · 2025
    Article
  8. Article
  9. Review
  10. Review
  11. Article
  12. Review
  13. Review
  14. Article
  15. Review
  16. Review
  17. Article
  18. Overview and Evolution of Insect Fibroin Heavy Chain (FibH).International journal of molecular sciences · 2024
    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

10 authors at 4 institutions in 1 country.

Nobuaki KonoInstitute for Advanced Biosciences, Keio University, 403-1 Nihonkoku, Daihouji, Tsuruoka, Yamagata 997-0017, Japan.ORCID 0000-0001-5960-7956
Hiroyuki NakamuraSpiber Inc., 234-1 Mizukami, Kakuganji, Tsuruoka, Yamagata 997-0052, Japan.
Masaru MoriInstitute for Advanced Biosciences, Keio University, 403-1 Nihonkoku, Daihouji, Tsuruoka, Yamagata 997-0017, Japan.ORCID 0000-0002-7687-7429
Yuki YoshidaInstitute for Advanced Biosciences, Keio University, 403-1 Nihonkoku, Daihouji, Tsuruoka, Yamagata 997-0017, Japan.ORCID 0000-0003-2749-8171
Rintaro OhtoshiCenter for Sustainable Resource Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
Ali D MalayCenter for Sustainable Resource Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.ORCID 0000-0003-0885-5524
Daniel A Pedrazzoli MoranSpiber Inc., 234-1 Mizukami, Kakuganji, Tsuruoka, Yamagata 997-0052, Japan.ORCID 0000-0002-5596-972X
Masaru TomitaInstitute for Advanced Biosciences, Keio University, 403-1 Nihonkoku, Daihouji, Tsuruoka, Yamagata 997-0017, Japan.
Keiji NumataCenter for Sustainable Resource Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
Kazuharu ArakawaInstitute for Advanced Biosciences, Keio University, 403-1 Nihonkoku, Daihouji, Tsuruoka, Yamagata 997-0017, Japan; gaou@sfc.keio.ac.jp.ORCID 0000-0002-2893-4919
Keio University · JPRIKEN Center for Sustainable Resource Science · JPSpiber (Japan) · JPKyoto University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Dragline silk of golden orb-weaver spiders (Nephilinae) is noted for its unsurpassed toughness, combining extraordinary extensibility and tensile strength, suggesting industrial application as a sustainable biopolymer material. To pinpoint the molecular composition of dragline silk and the roles of its constituents in achieving its mechanical properties, we report a multiomics approach, combining high-quality genome sequencing and assembly, silk gland transcriptomics, and dragline silk proteomics of four Nephilinae spiders. We observed the consistent presence of the MaSp3B spidroin unique to this subfamily as well as several nonspidroin SpiCE proteins. Artificial synthesis and the combination of these components in vitro showed that the multicomponent nature of dragline silk, including MaSp3B and SpiCE, along with MaSp1 and MaSp2, is essential to realize the mechanical properties of spider dragline silk.

Indexed as

AnimalsFibroinsGenomeSilkSpidersTranscriptomeFibroinsSilkgenomemechanical propertyorb-weaving spiderspider silk

Identifiers

PMID34312234
PMCPMC8346794
OpenAlexW3183671013

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.