BioPAX (Biological Pathway Exchange) is a RDF/OWL-basedstandard language to represent biological pathwaysat the molecular and cellular level. Its major use is to facilitate the exchange of pathway data.Pathway data captures our understanding of biological processes, butits rapid growth necessitates development of databases and computational tools to aidinterpretation. However, the current fragmentation of pathway information across manydatabases with incompatible formats presents barriers to its effective use. BioPAX solves thisproblem by making pathway data substantially easier to collect, index, interpret and share.BioPAX can represent metabolic and signaling pathways, molecular and genetic interactions andgene regulation networks. BioPAX was created through a community process. Through