KEGG, GO and Reactome pathway analysis for PAD4, highlighting pathways relating to viral infections (A) Immune related GO biological pathways (B) Immune related Reactome pathways (C) and UniProt keywords (D) Colour code for the different pathways is shown within the figure. Individual coloured lines represent specific protein interactions that have been identified through interactions that are known (referring to experimentally determined connections and curated databases), through interactions that are predicted (referring to gene fusion, gene neighbourhood, gene co-occurrence) or through interactions identified via text mining, co-expression or protein homology (please refer to the colour key provided in the figure for the different connective lines) (PPI enrichment p-value: 1.21 × 10−5).