TABLE 1.

Measurements of structures and compartments of S. aureus D2Ca

Structure or compartment measurementCellsCell wall fragmentsTeichoic acid-extracted wall fragmentsProtein-and-teichoic acid-extracted wallsPlasmolyzed cells
Cell or cylinder diam (μm)b1.05 ± 0.07NAcNANA0.98 ± 0.15
Protoplast diam (μm)0.97 ± 0.07NANANA0.85 ± 0.14
Plasma membrane thickness (nm)5.4 ± 0.4NANANA5.5 ± 1.5
Inner wall zone thickness (nm)15.8 ± 2.5NANANANAd
Outer wall zone thickness (nm)19.0 ± 4.332.8 ± 4.132.5 ± 5.533.8 ± 5.430.3 ± 5.1
  • a Values are the averages ± standard deviations of 12 measurements.

  • b Taken across the cell from the outer face to the outer face of the wall.

  • c NA, not applicable.

  • d The uneven spacing of the inner wall zone made measurement impossible.