Christian Freund

Freie Universität Berlin, Leibniz-Forschungsinstitut für Molekulare Pharmakologie

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About

Christian Freund is a structural and molecular biologist whose research has made significant contributions to our understanding of protein-protein interactions, particularly through the study of specialized adaptor domains involved in cellular signaling and RNA processing. His work has focused prominently on GYF domains — conserved eukaryotic modules that recognize proline-rich sequences — shedding light on how these domains mediate critical interactions within the cell. Freund's landmark 2005 proteomics study (54 citations) provided a comprehensive mapping of GYF domain interaction networks, revealing novel target proteins beyond previously characterized binding partners and expanding our understanding of how these adaptors function across species. Complementing this, his investigation into novel interaction partners of the CD2BP2-GYF domain (27 citations) uncovered new molecular connections linking T cell signaling to core splicing machinery, highlighting an unexpected interface between immune function and RNA processing. Together, these contributions have helped establish a molecular framework for understanding how proline-rich sequence recognition drives diverse biological processes. Freund's research appeals to scientists interested in structural biology, cell signaling, and RNA biology, offering foundational insights into the molecular logic governing protein interaction networks in eukaryotic cells.