Figure 4.
Protein–protein interaction (PPI) analysis of N-glycoprotein. The protein interaction network diagram drawn by Cytoscape software (http://www.cytoscape.org/, version 3.2.1) is based on the N-glycoproteins corresponding to the differentially expressed N-glycosylated peptides fragments. The nodes indicated the differentially expressed N-glycoprotein and the connecting lines indicated the interactions between proteins. Down-regulated proteins are shown in blue while upregulated genes are shown in red. Proteins possessing multiple N-glycopeptides which were oppositely regulated are marked in gray. The size of the circle indicates the number of proteins directly interacting with a protein.