Evidence map›Paper›PMID 26053298›Full record

ArticleNature chemical biology2015

Infiltration of chitin by protein coacervates defines the squid beak mechanical gradient.

YerPeng Tan, Shawn Hoon, Paul A Guerette, Wei Wei, Ali Ghadban, Cai Hao, Ali Miserez, J Herbert Waite

Abstract read
PubMed Publisher
In one paragraph

Article in Nature chemical biology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed
6.1field-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

60 citing papers in PubMed, 210 citations in OpenAlex.

  1. Coacervates as bio-inspired intermediates for materials processing.Chemical communications (Cambridge, England) · 2026
    Review
  2. Article
  3. Article
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  5. Coacervate-Mediated Lysosome-Targeting Antibody Delivery for Protein Degradation.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Article
  6. Nanocondensate bioadhesive delivery via metal-halogenated catechol coordination in tunicate rhizoid holdfasts.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  7. Article
  8. Article
  9. Review
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  11. Review
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  14. Review
  15. Article
  16. Article
  17. Cellular Uptake of Phase-Separating Peptide Coacervates.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024
    Article
  18. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

YerPeng TanBiomolecular Science and Engineering Program, University of California, Santa Barbara, California, USA.
Shawn Hoon1] Molecular Engineering Lab, Biomedical Sciences Institutes, Agency for Science, Technology and Research (A*STAR), Singapore. [2] School of Biological Sciences, Nanyang Technological University, Singapore.
Paul A Guerette1] Energy Research Institute at Nanyang Technological University (ERI@N), Nanyang Technological University, Singapore. [2] Biological &Biomimetic Material Laboratory, School of Materials Science &Engineering, Nanyang Technological University, Singapore.
Wei WeiMaterials Research Laboratory, University of California, Santa Barbara, California, USA.
Ali GhadbanBiological &Biomimetic Material Laboratory, School of Materials Science &Engineering, Nanyang Technological University, Singapore.
Cai HaoBiological &Biomimetic Material Laboratory, School of Materials Science &Engineering, Nanyang Technological University, Singapore.
Ali Miserez1] School of Biological Sciences, Nanyang Technological University, Singapore. [2] Biological &Biomimetic Material Laboratory, School of Materials Science &Engineering, Nanyang Technological University, Singapore.
J Herbert Waite1] Biomolecular Science and Engineering Program, University of California, Santa Barbara, California, USA. [2] Materials Research Laboratory, University of California, Santa Barbara, California, USA. [3] Department of Molecular Cellular and Developmental Biology, University of California, Santa Barbara, California, USA.
University of California, Santa Barbara · US

Funding

Translating Mussel AdhesionR01DE018468 · NIDCR · UNIVERSITY OF CALIFORNIA SANTA BARBARA · PI WAITE, JOHN HERBERT · 2008 to 2017
$4.2M
NIDCR NIH HHS R01-DE018468
6 · The paper itself

Abstract

The beak of the jumbo squid Dosidicus gigas is a fascinating example of how seamlessly nature builds with mechanically mismatched materials. A 200-fold stiffness gradient begins in the hydrated chitin of the soft beak base and gradually increases to maximum stiffness in the dehydrated distal rostrum. Here, we combined RNA-Seq and proteomics to show that the beak contains two protein families. One family consists of chitin-binding proteins (DgCBPs) that physically join chitin chains, whereas the other family comprises highly modular histidine-rich proteins (DgHBPs). We propose that DgHBPs play multiple key roles during beak bioprocessing, first by forming concentrated coacervate solutions that diffuse into the DgCBP-chitin scaffold, and second by inducing crosslinking via an abundant GHG sequence motif. These processes generate spatially controlled desolvation, resulting in the impressive biomechanical gradient. Our findings provide novel molecular-scale strategies for designing functional gradient materials.

Indexed as

Amino Acid SequenceAnimalsBeakBiomechanical PhenomenaCatecholsChitinCross-Linking ReagentsDecapodiformesHardnessHistidine-Rich GlycoproteinMolecular Sequence DataPeriodic AcidProtein BindingProteinsProtein Structure, TertiaryProteomics4-methylcatecholCatecholsChitinCross-Linking ReagentsHistidine-Rich GlycoproteinmetaperiodatePeriodic AcidProteinsWater

Identifiers

PMID26053298
OpenAlexW1913602352

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.