GO analysis showed that AM5 genes are mainly associated with immune response (Staphylococcus aureus infection, complement and coagulation cascades, phagosome, B-cell receptor signaling pathway, and NF-kappa B signaling pathway, etc.), heterocycle catabolic process (organic cyclic compound catabolic process), and regulation of the actin cytoskeleton. Here, PPIB is linked to staphylococcus aureus infection.