Figure 5 Modular analysis of the protein–protein interaction (PPI) network complex. In the STRING database, 21 proteins were filtered in the network complex. The PPI module consisted of 21 nodes and 108 edges. The average local clustering coefficient was 0.78. The PPI enrichment P-value was less than 1.0e-16. The top 5 predicted functional partners were MS4A6A (score: 0.801), FGB (score: 0.781), FGG (score: 0.776), FGA (score: 0.768), and FGL1 (score: 0.748). The blue and purple edges are considered known interactions. Green, red, and deep blue edges are predicted interactions. Orange, black, and light blue represent text mining, coexpression, and protein homology, respectively.