Protein Interactions and Properties Explorer [ P I P E ] is a web based program developed by IBI Biosolutions Pvt. Ltd., which can calculate protein properties and various interactions present in a specific protein. This interface has been created to analyse the atomic interactions in tertiary structures of proteins that contribute richly to our understanding of sequence-structure relationships, structural basis of protein stability and protein evolution.

This server accepts atomic coordinate set of a protein structure in the standard Protein Data Bank (PDB) format.