78 results found
    1. Chromosomes and Gene Expression

    DNA deaminases induce break-associated mutation showers with implication of APOBEC3B and 3A in breast cancer kataegis

    Benjamin JM Taylor, Serena Nik-Zainal ... Michael S Neuberger
    Enzymes that remove amine groups from cytosine bases in DNA are likely involved in generating the clusters of mutations (kataegis) seen in breast cancer.
    1. Microbiology and Infectious Disease

    Antagonism of PP2A is an independent and conserved function of HIV-1 Vif and causes cell cycle arrest

    Sara Marelli, James C Williamson ... Nicholas J Matheson
    Systematic screen of HIV-1 Vif mutants identifies synthetic and naturally occurring amino acid polymorphisms separating PPP2R5 and APOBEC3 family protein depletion and uncovers the mechanism of Vif-dependent cell cycle arrest.
    1. Cancer Biology
    2. Chromosomes and Gene Expression

    Characterization of the mechanism by which the RB/E2F pathway controls expression of the cancer genomic DNA deaminase APOBEC3B

    Pieter A Roelofs, Chai Yeen Goh ... Reuben S Harris
    The antiviral and genomic DNA deaminase APOBEC3B is repressed in normal cells by PRC1.6/E2F6 and DREAM/E2F4 complexes and deregulation of this axis provides a unifying mechanism for overexpression in cancer.
    1. Chromosomes and Gene Expression
    2. Immunology and Inflammation

    Active RNAP pre-initiation sites are highly mutated by cytidine deaminases in yeast, with AID targeting small RNA genes

    Benjamin JM Taylor, Yee Ling Wu, Cristina Rada
    Transcribed promoters are highly susceptible to mutation by cytidine deaminases, implicating stable exposure of single stranded DNA structures, rather than cofactors, in localising mutation during tumourigenesis and antibody maturation.
    1. Genetics and Genomics

    APOBEC3A deaminates transiently exposed single-strand DNA during LINE-1 retrotransposition

    Sandra R Richardson, Iñigo Narvaiza ... John V Moran
    Combining in vitro and in vivo assays demonstrates that the cytidine deaminase APOBEC3A can inhibit LINE-1 retrotransposition by deaminating transiently exposed single-strand DNA that arises during the process of LINE-1 integration.
    1. Microbiology and Infectious Disease

    Temporal proteomic analysis of HIV infection reveals remodelling of the host phosphoproteome by lentiviral Vif variants

    Edward JD Greenwood, Nicholas J Matheson ... Paul J Lehner
    A comprehensive whole cell proteomic map describing expression time courses of >6,500 viral and cellular proteins during HIV infection identifies Vif-dependent antagonism of key cellular phosphatase PP2A.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Repair of naturally occurring mismatches can induce mutations in flanking DNA

    Jia Chen, Brendan F Miller, Anthony V Furano
    The repair of spontaneous DNA damage can introduce mutators that lead to further genetic changes, which could underlie evolutionary change, disease and aging.
    1. Microbiology and Infectious Disease

    USP49 potently stabilizes APOBEC3G protein by removing ubiquitin and inhibits HIV-1 replication

    Ting Pan, Zheng Song ... Hui Zhang
    USP49 can increase A3G protein expression and enhance its anti-HIV-1 activity, which is also correlated with hypermutations and affects the HIV-1 latent reservoir.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    A genome-phenome association study in native microbiomes identifies a mechanism for cytosine modification in DNA and RNA

    Weiwei Yang, Yu-Cheng Lin ... Laurence Ettwiller
    A novel DNA/RNA modifying enzyme catalyzing a previously unknown 5-carbamoyloxymethylcytosine modification has been discovered using a novel framework called Metagenomics Genome-Phenome Association.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Evidence linking APOBEC3B genesis and evolution of innate immune antagonism by gamma-herpesvirus ribonucleotide reductases

    Sofia N Moraes, Jordan T Becker ... Reuben S Harris
    The birth of the antiviral gene APOBEC3B in ancient primates is linked to the evolution of a potent counterdefense by herpesviruses, a host-pathogen interaction maintained to present day.

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