263 results found
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Coordination between nucleotide excision repair and specialized polymerase DnaE2 action enables DNA damage survival in non-replicating bacteria

    Asha Mary Joseph, Saheli Daw ... Anjana Badrinarayanan
    Live-cell imaging shows that replication-independent specialized polymerase action is a consequence of lesion processing via NER and impacts cellular survival under stress outside replicative phases of the cell cycle.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Single-molecule studies contrast ordered DNA replication with stochastic translesion synthesis

    Gengjing Zhao, Emma S Gleave, Meindert Hugo Lamers
    Competing DNA polymerases at the DNA sliding clamp are revealed by single-molecule co-localization studies.
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    Mechanism for priming DNA synthesis by yeast DNA Polymerase α

    Rajika L Perera, Rubben Torella ... Luca Pellegrini
    The details of how the enzyme DNA polymerase α initiates the polymerization of nucleotides in DNA replication, a critical step in the synthesis of new chromosomal DNA, have been revealed in atomic detail.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Universally high transcript error rates in bacteria

    Weiyi Li, Michael Lynch
    Fundamental details of the rate and molecular spectrum of transcript errors were revealed in four bacterial species, providing novel insights into transcriptional fidelity and RNA quality-control in prokaryotes.
    1. Biochemistry and Chemical Biology

    DNA polymerase V activity is autoregulated by a novel intrinsic DNA-dependent ATPase

    Aysen L Erdem, Malgorzata Jaszczur ... Myron F Goodman
    DNA synthesis by DNA polymerase V is regulated by an intrinsic DNA-dependent ATPase activity which has not been observed for any other polymerase.
    1. Biochemistry and Chemical Biology

    A robust method for measuring aminoacylation through tRNA-Seq

    Kristian Davidsen, Lucas B Sullivan
    Improved chemical, molecular biology, and computational approaches establish an optimized method for accurate and precise quantification of tRNA expression, modifications, and aminoacylation.
    1. Computational and Systems Biology

    RNA polymerase errors cause splicing defects and can be regulated by differential expression of RNA polymerase subunits

    Lucas B Carey
    A single human cell makes 10-100 transcriptional errors per second; these errors affect splicing and may influence the evolution of coding sequences.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Asynchrony between virus diversity and antibody selection limits influenza virus evolution

    Dylan H Morris, Velislava N Petrova ... Colin A Russell
    Despite the virus' error prone polymerase, influenza virus antigenic evolution is rare, even in previously immune hosts, virus replication occurs before producing new antibodies.
    1. Microbiology and Infectious Disease

    Roles for mycobacterial DinB2 in frameshift and substitution mutagenesis

    Pierre Dupuy, Shreya Ghosh ... Michael S Glickman
    Genetic and biochemical analyses reveal an important role for the translesion DNA polymerase DinB2 in mycobacterial mutagenesis, including in the insertion/deletion events that are an increasingly recognized type of diversity in Mycobacterium tuberculosis genomes.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Polymerase θ is a robust terminal transferase that oscillates between three different mechanisms during end-joining

    Tatiana Kent, Pedro A Mateos-Gomez ... Richard T Pomerantz
    Polymerase θ is among the most proficient terminal transferases known and switches between three different mechanisms of terminal transferase activity.

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