Order of the 102 array phosphosubstrates, listed from highest to lowest difference in phosphorylation level (top to bottom in Figure 2) between Cluster-Group 1 and Cluster-Group 2 tumors from 62 patients with locally advanced rectal cancer.

Peptides representing phosphatidylinositol-3-kinase-dependent factors are indicated in bold, whereas peptides related to signaling mediated by the KRAS/BRAF-encoded effector pathway are italicized. The EGFR peptides are highlighted in bold and italics.
aRetrieved from UniProtKB/SwissProt (http://au.expasy.org/sprot).
bPosition(s) of the tyrosine phosphorylation site(s) within the protein.