4,242 results found
    1. Microbiology and Infectious Disease

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

    Michael B Schulte, Jeremy A Draghi ... Raul Andino
    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. Evolutionary Biology

    Stochastic parabolic growth promotes coexistence and a relaxed error threshold in RNA-like replicator populations

    Mátyás Paczkó, Eörs Szathmáry, András Szilágyi
    An individual-based model framework of sub-exponentially growing replicator systems suggests that parabolic dynamics could have been able to maintain genetic diversity and circumvent the error threshold problem during early evolution.
    1. Microbiology and Infectious Disease

    Cryo-electron tomography reveals novel features of a viral RNA replication compartment

    Kenneth J Ertel, Desirée Benefield ... Paul Ahlquist
    Cryo-electron tomography unveils striking new structural components of positive-strand virus RNA replication compartments, greatly advancing mechanistic insights into the structure, assembly, function and control of these critical complexes.
    1. Biochemistry and Chemical Biology

    Rolling circle RNA synthesis catalyzed by RNA

    Emil Laust Kristoffersen, Matthew Burman ... Philipp Holliger
    All steps of a viroid-like replication cycle can be catalyzed by RNA alone.
    1. Microbiology and Infectious Disease
    2. Plant Biology

    CCR4, a RNA decay factor, is hijacked by a plant cytorhabdovirus phosphoprotein to facilitate virus replication

    Zhen-Jia Zhang, Qiang Gao ... Xian-Bing Wang
    A cytorhabdovirus phosphoprotein hijacks host CCR4 to trigger turnover of viral nucleoprotein (N)-bound cellular RNAs, thereby releasing nascent RNA-free N protein molecules to bind viral genomic RNAs for optimal replication.
    1. Microbiology and Infectious Disease

    N6-methyladenosine of HIV-1 RNA regulates viral infection and HIV-1 Gag protein expression

    Nagaraja Tirumuru, Boxuan Simen Zhao ... Li Wu
    Human proteins that add or remove the methyladenosine modification of cellular RNA, or recognize methylated RNA significantly affect HIV-1 infection or viral protein synthesis in cells, suggesting an important role for HIV-1 RNA methylation in regulating viral replication.
    1. Biochemistry and Chemical Biology
    2. Evolutionary Biology

    Emergence and diversification of a host-parasite RNA ecosystem through Darwinian evolution

    Taro Furubayashi, Kensuke Ueda ... Norikazu Ichihashi
    In an in vitro RNA replication system, an RNA spontaneously diversifies and continuously evolves through coevolution with parasitic entities.
    1. Microbiology and Infectious Disease

    The Tudor SND1 protein is an m6A RNA reader essential for replication of Kaposi’s sarcoma-associated herpesvirus

    Belinda Baquero-Perez, Agne Antanaviciute ... Adrian Whitehouse
    SND1 has m6A-reading ability and is essential for Kaposi's sarcoma-associated lytic replication.
    1. Chromosomes and Gene Expression

    Human ORC/MCM density is low in active genes and correlates with replication time but does not delimit initiation zones

    Nina Kirstein, Alexander Buschle ... Aloys Schepers
    Replication origins are established throughout the genome with the exception of transcribed genes, and the local chromatin composition likely modulates the density of ORC and MCM as well as origin activation.
    1. Computational and Systems Biology
    2. Structural Biology and Molecular Biophysics

    tRNA sequences can assemble into a replicator

    Alexandra Kühnlein, Simon A Lanzmich, Dieter Braun
    Rudimentary cross-catalytic replication can be established by double-hairpins of tRNA-like sequences, implying that replication and translation could have emerged along a common evolutionary trajectory.

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