Putting the brakes on dynein

Lis1 slows force-induced detachment of cytoplasmic dynein from microtubules

  • Emre Kusakci
  • Zaw Min Htet
  • Ahmet Yildiz
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  • Cryo-electron microscopy (cryo-EM), kinetic analysis and single-molecule biochemistry reveal how the tubulin tyrosine ligase-like 6 (TTLL6) glutamylase binds reads microtubule geometry and modification state of neighboring tubulins, enabling a spatial positive feedback loop for microtubule modification.

    • Kishore K. Mahalingan
    • Danielle A. Grotjahn
    • Antonina Roll-Mecak
    Article
  • Calcium signals are typically traced through electrophysical, optical and genetic methods. Here the authors report the development of Cal-ID, a calcium-dependent protein proximity labeling tool that can be used to record elevated calcium levels in cells.

    • J. Wren Kim
    • Adeline J. H. Yong
    • Nicholas T. Ingolia
    Article
  • Developing disease-modifying drugs for neurodegenerative diseases has been very challenging. Now a machine learning approach has been used to identify small molecule inhibitors of α-synuclein aggregation, a process implicated in Parkinson’s disease and other synucleinopathies. Compounds that bind to the catalytic sites on the surface of the aggregates were identified and then progressively optimized into secondary nucleation inhibitors.

    • Robert I. Horne
    • Ewa A. Andrzejewska
    • Michele Vendruscolo
    ArticleOpen Access
    • Ribosomally synthesized and post-translationally modified peptide (RiPP) natural products typically rely on substrate recognition through remote protein–protein interaction sites. Now, an atypical dehydratase, whose activity is directed by neighboring azole modifications, has been shown to produce a highly modified peptide hybrid bearing dehydroamino acids, enabling the synthesis of members of the dehydrazole family of RiPPs.

      • Daniel Richter
      • Anna Lisa Vagstad
      News & Views
    • Reprogramming intercellular mechanotransduction and signaling pathways is still challenging. A recent advance uses a plug-and-play DNA nanodevice to allow non-mechanosensitive receptor tyrosine kinase (RTK) to transmit force-induced cellular signals.

      • Ahsan Ausaf Ali
      • Mahmoud Amouzadeh Tabrizi
      • Mingxu You
      News & Views
    • Chemical approaches, such as those that leverage induced proximity, targeted degradation, synthetic gene regulators or protein design offer opportunities to therapeutically target cellular processes that have long been thought of as undruggable. We report on the progress and the potential for transformative collaborations between fields discussed at the 2023 Bringing Chemistry to Medicine symposium at St. Jude Children’s Research Hospital.

      • Caitlin D. Deane
      • Marcus Fischer
      • Anang A. Shelat
      Meeting Report
    • Peptide vaccines use antigenic peptide fragments to induce an immune response but are problematic because of the short half-life of peptides. A study now reports thioamide substitution in the peptide backbone as a strategy to enhance resistance to proteolysis and promote binding to the MHC I complex for T cell activation.

      • Martin Zacharias
      • Sebastian Springer
      News & Views
    • Detection of intracellular lipolysaccharide (LPS) activates an immune response initiated by the non-canonical inflammasome. ATGL has now been identified as a negative regulator of this pathway that dampens inflammation by removing LPS’ acyl chains, preventing the activation of inflammatory caspases and cytokines.

      • Gemma Banister
      • Dave Boucher
      News & Views

Chemical Biology of Microbiomes

Interspecies communication in complex microbiome environments occurs through the small molecules, peptides, and proteins produced by both the host and the microbial residents, as highlighted in this collection of recent articles from Nature Portfolio.
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