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.
American Society for Microbiology
Taylor, Eric S; Lower, Steven K (2008). Thickness and Surface Density of Extracellular Polymer on Acidithiobacillus ferrooxidans. American Society for Microbiology 74(1) 309-311. doi: 10.1128/AEM.01904-07. Retrieved from https://oaks.kent.edu/article/thickness-and-surface-density-extracellular-polymer-acidithiobacillus-ferrooxidans