Gene Network Biological Validity Based on Gene-Gene Interaction Relevance

Table 1

Possible interactions presented in KEGG are classified into two groups, gene relationships and others relationships. First the four types of gene relationships are presented.

KEGG relationships	Description
Gene relationships
ECrel	Enzyme-enzyme relation
PPrel	Protein-protein interaction
GErel	Gene expression interaction
PCrel	Protein-compound interaction
Others
compound-compound	Compound-compound interaction