AUTHOR=Prischi Filippo , Filippakopoulos Panagis TITLE=Editorial: Structural Studies of Protein Complexes in Signaling Pathways JOURNAL=Frontiers in Molecular Biosciences VOLUME=8 YEAR=2021 URL=https://www.frontiersin.org/journals/molecular-biosciences/articles/10.3389/fmolb.2021.641932 DOI=10.3389/fmolb.2021.641932 ISSN=2296-889X