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Updated: Oct 15, 2026

Genome-wide Protein-protein Interaction Screening by Protein-fragment Complementation Assay (PCA) in Living Cells
Published on: March 3, 2015
Functional genomics with protein-protein interactions
1Xerion Pharmaceuticals GmbH, Martinsried/Munich, Germany. f.rudert@xerion-pharma.com
Abstract:
Knowing the sequence of a gene does not mean knowing its function. Although, information stored at the DNA level can be used to predict biological processes, proteins are the final executors of the various response programs of a cell. Transient information, like posttranslational modifications or interactions among proteins, cannot be deduced from DNA sequences. The rapid accumulation of large amounts of DNA sequence data in genomics projects has led to an increasing demand for powerful tools to analyze proteins and their behaviour at a large scale. This review aims to compare different technologies used for identification of interacting proteins and discusses recent developments in the field of high-throughput protein-protein interaction mapping.
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