Differential protein expression in Sp7 and Sp7-flcAΔ analyzed by 2-DE.

<p>The left section shows the normalized expression volume of the spot in wild type (Sp7) and <i>flcA</i> knock out strain (Sp7-flcAΔ) under flocculation conditions; the relative fold change is shown above each column (Nx indicates that relative fold change could not be calculated as the protein was only detected in either Sp7 or Sp7-flcAΔ). The right section is a 3D representation of the area of interest as provided by PDquest software. Arrows indicate spots with relatively higher expression.