Given physical protein protein interaction like String and KEGG pathway. I would like to know how many of KEGG pathways or signaling pathways exist in PPI network. Is there any tool to extract known pathways(either entire or partial) from PPI network ?
Your question is not clear. Are you asking if one can extract an ENTIRE pathway from a PPI network? Or are you looking for even PARTIAL pathways from a PPI network - if so, what threshold would you use for inclusion or exclusion? Please restate your question more clearly.
Either entire or partial is fine.