Title

Thickness and Surface Density of Extracellular Polymer on Acidithiobacillus ferrooxidans

Publication Title

Applied and Environmental Microbiology

Publication Date

1-2008

Document Type

Article

DOI

10.1128/AEM.01904-07

Disciplines

Microbiology

Abstract

In vivo force microscopy measurements of Acidithiobacillus ferrooxidans revealed a repulsive force that was due to the presence of extracellular polymers on the bacterium's surface. Measured force-distance profiles were fit to steric force theory to estimate the density and thickness values of these exopolymers. The polymer densities were 3.4 × 1016 to 7.1 × 1016 molecules m−2, and the equilibrium thickness was 29 nm.

Publisher

American Society for Microbiology

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