Adhesion of single bacterial cells in the micronewton range | Zendy

Peter H. Tsang | Zendy; Guanglai Li | Zendy; Yves V. Brun | Zendy; L. B. Freund | Zendy; Jay X. Tang | Zendy

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Adhesion of single bacterial cells in the micronewton range

Author(s) -

Peter H. Tsang,

Guanglai Li,

Yves V. Brun,

L. B. Freund,

Jay X. Tang

Publication year - 2006

Publication title -

proceedings of the national academy of sciences

Language(s) - English

Resource type - Journals

eISSN - 1091-6490

pISSN - 0027-8424

DOI - 10.1073/pnas.0601705103

Subject(s) - caulobacter crescentus , holdfast , adhesion , adhesive , substrate (aquarium) , bacteria , biophysics , materials science , chemistry , nanotechnology , microbiology and biotechnology , biology , composite material , bacterial protein , ecology , genetics , layer (electronics)

The adhesion of bacteria to surfaces plays critical roles in the environment, disease, and industry. In aquatic environments,Caulobacter crescentus is one of the first colonizers of submerged surfaces. Using a micromanipulation technique, we measured the adhesion force of singleC. crescentus cells attached to borosilicate substrates through their adhesive holdfast. The detachment forces measured for 14 cells ranged over 0.11 to 2.26 μN, averaging 0.59 ± 0.62 μN. Based on the calculation of stress distribution with the finite element analysis method (dividing an object into small grids and calculating relevant parameters for all of the elements), the adhesion strength between the holdfast and the substrate is >68 N/mm2 in the central region of contact. To our knowledge, this strength of adhesion is the strongest ever measured for biological adhesives.

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