coimmunoprecipitation protein in situ array miniaturized immunoprecipitation Combines on-chip in-vitro protein synthesis with an in situ microfluidic affinity assay. Co-spotted DNA microarray containing a linear template encoding the proteins is aligned and bonded with a microfluidic device that creates chambers in the array chip. The experiment consists of three main stages: (i) an antibody that recognizes the bait protein or a specific tag is deposited on a circular area inside each individual chamber; (ii) proteins are expressed in vitro by transcription and translation of DNA spotted on the chip; (iii) the bait is immobilized on the chamber surface by the antibody and the chamber is washed, retaining only interacting bait-prey pairs. PSI-MI mIP MI:0946 MITOMI ping protein interaction network generator