Fig. 2
Analysis of differentially phosphorylated proteins. A The histogram of differentially expressed phosphorylated proteins (DEPPs). B, C Volcano plots of differentially phosphorylation sites. The horizontal axis is the log2-transformed value of the differential expression change ratio of the comparison group; the vertical axis is the −log10-transformed value of the statistical test t-test P value; where red points indicate significant upregulation of differential modifier loci (P < 0.05), blue points indicate significant downregulation (P < 0.05), and gray points indicate no significant difference (P > 0.05). The top five (absolute log2 ratio from largest to smallest) differentially modified loci are also marked on the graph. D, E Cluster heat map of differentially phosphorylation sites. One differentially modified site per row, one sample per column. Red represents high expression, blue represents low expression. F Venn diagram showing the distribution of the differentially phosphorylated sites in two comparison groups