A cholera peptide inspires a glue that works underwater
A 57-amino-acid fragment of Vibrio cholerae’s Bap1 protein bonds wet surfaces at more than 80 kPa in salty water.
Conventional glues fail when water is present. Biofilm bacteria have solved that for eons; now one of their peptides moves into engineering.
A team led by Jing Yan at Yale published in Science Advances an adhesive inspired by Vibrio cholerae biofilms. The matrix protein Bap1 anchors the biofilm to abiotic surfaces through a 57-amino-acid loop (Bap1-57aa). The synthetic peptide spontaneously adsorbs to silica, polystyrene and other surface chemistries, and Nature highlighted the work on November 6, 2026.
Using microscopy, quartz crystal microbalance, AFM, SFG spectroscopy and simulations, they measured near-irreversible adsorption and pull-off forces; wet lap-shear tests at 8 mg/ml exceeded 80 kPa, higher in 400 mM NaCl than in deionized water and above a BSA control. Unlike mussel-inspired adhesives, it does not rely on DOPA, which is sensitive to oxygen and pH.
The same peptide flocculates microspheres in suspension, useful for clearing particles from water. Yale and Wesleyan have a patent application. Possible uses include wet wound closure, submarine repairs and priming coatings; fermentative scale-up and balancing adhesion with cohesion remain open.
Key facts
- Published in Science Advances (Huang et al., 2026); Nature highlight Nov 6.
- Bap1-57aa peptide; >80 kPa wet lap-shear strength, stronger in salty water.
- No DOPA; more chemically stable than many mussel-style adhesives.
- Also acts as a particle flocculant; patent pending.
That a pathogen inspires a medical or naval glue does not erase its danger—it only shows how much useful design microbial evolution already holds.
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