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  • Elucidating the interactions between serum protein-bound nanoparticles and cell-surface receptors typically operates on a per protein–receptor interaction basis. Integration of omic approaches for testing thousands of interactions unbiasedly reveals important interactions that drive cellular uptake of nanoparticles.

    • Cecilia Ka Wing Chan
    • Sze Ho Gwyneth Lau
    • Chung Hang Jonathan Choi
    News & Views
  • Merging the generalized extracellular molecule sensor (GEMS) system with screening designed ankyrin repeat proteins (DARPins) identifies an advanced modular bispecific extracellular receptor (AMBER) for detection of fibrinogen degradation products.

    • Tobias Strittmatter
    • Yidan Wang
    • Martin Fussenegger
    Article Open Access
  • Transposon-associated transposase B (TnpB) is the putative ancestor of Cas nucleases. A TnpB-based adenine base editor has now been developed that is small enough to be loaded into a single AAV vector without compromising editing activity.

    • Beomjong Song
    • Sangsu Bae
    News & Views
  • A hypercompact adenine base editor termed TaRGET-ABE was developed by fusing a catalytically inactive transposon-associated transposase B guided by an engineered RNA to deaminases, which achieves efficient A-to-G conversions via adeno-associated viral delivery in mammalian genomes.

    • Do Yon Kim
    • Yuhee Chung
    • Yong-Sam Kim
  • Emerging evidence shows that ubiquitination can occur on nonlysine residues and nonproteinaceous substrates. This perspective summarizes the recent discoveries in noncanonical ubiquitination and advocates the development of chemical biology tools for new substrate identification and mechanistic dissection.

    • Daniel R. Squair
    • Satpal Virdee
  • In the post-genomic era, many genes and regulatory elements remain uncharacterized, including riboswitches — RNA structures that control gene expression by directly binding metabolites. Here, a new type of metal-responsive riboswitch that senses sodium cations expands the bacterial Na+ metabolic repertoire.

    • Lauren Waters
    News & Views
  • Only one protein factor is known that senses Na+ and controls gene expression. The Breaker Laboratory describes a bacterial riboswitch class selective for Na+ that regulates genes important for Na+ homeostasis, pH maintenance, osmotic stress response and ATP synthesis.

    • Neil White
    • Harini Sadeeshkumar
    • Ronald R. Breaker
    Article Open Access
  • Biomolecular condensates form and dissolve in response to a wide range of signals. A new study reports a solubility-based phosphoproteome-profiling approach, which uncovers the extensive role of phosphorylation in regulating protein partitioning into condensates across the human proteome.

    • Kamran Rizzolo
    • Diana M. Mitrea
    News & Views