Articles in 2021

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  • Vaccination campaigns against COVID-19 are allowing the progressive release of physical distancing restrictions in many countries. Here, the authors assess the impact of the vaccination program in Italy and evaluate possible prospects for reopening the society while at the same time keeping COVID-19 under control.

    • Valentina Marziano
    • Giorgio Guzzetta
    • Stefano Merler
    ArticleOpen Access
  • Chemical heterogeneities in Apollo sample 76535 constrain the magmatic cooling history of the lunar Mg-suite to <~ 20 My. Such rapid cooling is inconsistent with a large intrusive magma body and suggests formation by reactive melt infiltration.

    • William S. Nelson
    • Julia E. Hammer
    • G. Jeffrey Taylor
    ArticleOpen Access
  • Fibroblast growth factors are involved in systemic glucose homeostasis and of interest for developing therapies for type 2 diabetes and associated metabolic diseases. Here the authors identify paracrine FGF4 as an anti-hyperglycemic FGF, which targets skeletal muscle to upregulate the glucose transporter GLUT4 cell surface abundance.

    • Lei Ying
    • Luyao Wang
    • Zhifeng Huang
    ArticleOpen Access
  • Double membrane vesicles (DMV) are used as replication organelles by several RNA viruses. Applying proteomics and lipidomics, Tabata and Prasad et al. find that two cellular acyltransferases (AGPAT1/2), responsible for synthesis of phosphatidic acid, play a role in the DMV-biogenesis of HCV and SARS-CoV-2, highlighting a common biogenesis mechanism for evolutionary distant positive-strand RNA viruses.

    • Keisuke Tabata
    • Vibhu Prasad
    • Ralf Bartenschlager
    ArticleOpen Access
  • The amphiphilic low-molecular-weight protein hydrophobin (HFBI) can self-assemble into a crystalline monolayer film. Here, the authors present a cryo-EM support film using such 2D crystals of hydrophobin HFBI and show that it protects specimen from the air-water interface and can help to overcome the preferred orientation problem of particles in cryo-EM.

    • Hongcheng Fan
    • Bo Wang
    • Fei Sun
    ArticleOpen Access
  • RNA therapeutics have benefited significantly from decades of research on lipid nanoparticles, specifically its key component—the ionizable lipid. This comment discusses the major ionizable lipid types, and provides perspectives for future development.

    • Xuexiang Han
    • Hanwen Zhang
    • Michael J. Mitchell
    CommentOpen Access
  • A solid hitting a liquid surface normally creates a region of high pressure at the solid-liquid contact area. Now, it is shown that for a flat-bottomed cylinder hitting a liquid at low-enough impact speed, the local pressure is sufficiently low to cause the liquid to cavitate.

    • Nathan B. Speirs
    • Kenneth R. Langley
    • Sigurdur T. Thoroddsen
    ArticleOpen Access
  • Mechanical logic, while slower than its electronic counterpart, has the potential to be integrated into mechanical devices and a robustness in extreme environments. In this manuscript, Mei et al demonstrate reprogrammable mechanical logic which can perform combinatorial and sequential logic.

    • Tie Mei
    • Zhiqiang Meng
    • Chang Qing Chen
    ArticleOpen Access
  • EF-G drives ribosomal translocation along mRNA. Time-resolved cryo-EM captured translocation with EF-G•GTP—without inhibitors—revealing how EF-G uses ribosome fluctuations to drive translocation and GTP hydrolysis to leave at the right moment.

    • Christine E. Carbone
    • Anna B. Loveland
    • Andrei A. Korostelev
    ArticleOpen Access
  • Individual studies have been underpowered to draw clear associations between clonal heterogeneity and response to therapy in acute myeloid leukemia (AML). Here, the authors aggregate multiple AML cohorts and are able to correlate the clonal abundance of somatic mutations with clinical outcomes and drug sensitivity.

    • Brooks A. Benard
    • Logan B. Leak
    • Ravindra Majeti
    ArticleOpen Access
  • Climate change does not only increase mean temperatures, but also the magnitude of year-to-year temperature variability. Here, the authors use large model ensembles to show that these changes can be statistically distinguished from the baseline variability in most regions of the world during the 21st century.

    • Dirk Olonscheck
    • Andrew P. Schurer
    • Gabriele C. Hegerl
    ArticleOpen Access