Figure 2. Transport proteins detected in the lens membrane proteome. A: Mip, a lens-specific aquaporin protein, and Gja8, a connexin protein, together dominate this category of proteins. B: To better visualize the results, Mip and Gja8 have been removed from the data set. Three classes of membrane transport protein
were detected: connexins, ATPases and Slc transporters. The numbers in parentheses indicate the lens preferred expression
index (LPEI, see text for details). Occasionally, it was not possible to calculate the LPEI because of inadequate hybridization
signals, these instances are indicated by an asterisk.