1,711 results found
    1. Microbiology and Infectious Disease

    Experimentally guided models reveal replication principles that shape the mutation distribution of RNA viruses

    Michael B Schulte et al.
    A mathematical model that combines stochasticity and spatial structure describes the dynamics of the viral population during an infection cycle, and fitting the model to RNA and virus abundances over time shows that poliovirus follows a geometric replication mode.
    1. Structural Biology and Molecular Biophysics
    2. Microbiology and Infectious Disease

    Nucleocapsid assembly in pneumoviruses is regulated by conformational switching of the N protein

    Max Renner et al.
    A structural comparison of different states of the protein responsible for encapsidation of the viral RNA genome provides mechanistic insights into this process.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Viral RNA switch mediates the dynamic control of flavivirus replicase recruitment by genome cyclization

    Zhong-Yu Liu et al.
    A conserved element in the flavivirus genomic 5′ terminus switches its conformation in response to long-range RNA interactions, and thereby regulates the dynamic recruitment of viral replicase for efficient viral RNA replication.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    RNA-directed remodeling of the HIV-1 protein Rev orchestrates assembly of the Rev–Rev response element complex

    Bhargavi Jayaraman et al.
    A pliable hydrophobic interface in the HIV-1 Rev protein enables assembly of diverse oligomeric structures, guided by the RRE scaffold present in HIV-1 mRNAs.
    1. Structural Biology and Molecular Biophysics

    Viral genome structures are optimal for capsid assembly

    Jason D Perlmutter et al.
    Computer simulations reveal that viral nucleic acids have an ideal structure for being packaged into outer protein shells called capsids.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    RNA-guided assembly of Rev-RRE nuclear export complexes

    Yun Bai et al.
    Tertiary folding of the Rev-response element (RRE) in HIV RNA ensures the rapid formation of the Rev-RRE viral ribonucleoprotein particle via a two-step process.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Ensemble cryo-EM uncovers inchworm-like translocation of a viral IRES through the ribosome

    Priyanka D Abeyrathne et al.
    An ensemble of cryo-EM structures reveals how eukaryotic elongation factor 2 positions the first codon of a viral mRNA for translation.
    1. Structural Biology and Molecular Biophysics

    Structural basis of transcription inhibition by the DNA mimic protein Ocr of bacteriophage T7

    Fuzhou Ye et al.
    DNA mimicry Ocr protein, a well-studied T7 phage protein that inhibits host restriction enzymes, can also inhibit host transcription through competing with sigma factors in binding to RNA polymerase.
    1. Structural Biology and Molecular Biophysics

    Slowly folding surface extension in the prototypic avian hepatitis B virus capsid governs stability

    Cihan Makbul et al.
    Duck Hepatitis B core protein forms capsids with a slowly folding extension domain which folding competence is important for viral replication.
    1. Structural Biology and Molecular Biophysics

    High resolution cryo-EM structure of the helical RNA-bound Hantaan virus nucleocapsid reveals its assembly mechanisms

    Benoît Arragain et al.
    Hantaan virus nucleocapsid cryo-EM structure determined at 3.3 Å resolution reveals how nucleoproteins assemble into a metastable helix containing a continuous RNA-binding groove compatible with genome encapsidation and compaction.

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