627 results found
    1. Microbiology and Infectious Disease

    A single regulator NrtR controls bacterial NAD+ homeostasis via its acetylation

    Rongsui Gao et al.
    Functional definition of NrtR and the discovery of its acetylation represents a first paradigm for linking protein acetylation to bacterial central NAD+ metabolism.
    1. Computational and Systems Biology
    2. Evolutionary Biology

    ASPEN, a methodology for reconstructing protein evolution with improved accuracy using ensemble models

    Roman Sloutsky, Kristen M Naegle
    Using different sets of input sequences to evolutionary reconstruction algorithms results in the exploration of many possible models, the intergration over which produces significantly more accurate models.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    Control of RNA viruses in mosquito cells through the acquisition of vDNA and endogenous viral elements

    Michel Tassetto et al.
    Virus infection in mosquitoes initiates a highly discriminatory process in which fragments of viral RNA are reverse transcribed to create DNA copies that serve as templates of small antiviral RNAs.
    1. Chromosomes and Gene Expression
    2. Evolutionary Biology

    Dynamic turnover of centromeres drives karyotype evolution in Drosophila

    Ryan Bracewell et al.
    De novo formation of centromeres creates diverse karyotypes in flies and is accompanied by rapid turnover of centromere-associated satellite repeats.
    1. Evolutionary Biology

    Fog signaling has diverse roles in epithelial morphogenesis in insects

    Matthew Alan Benton et al.
    Fog signaling with a narrow morphogenetic role in Drosophila has a deeply conserved function in epithelial morphogenesis across insects.
    1. Biochemistry and Chemical Biology

    Evolution of (p)ppGpp-HPRT regulation through diversification of an allosteric oligomeric interaction

    Brent W Anderson et al.
    The signaling ligand (p)ppGpp regulates the enzyme HPRT across species by binding to a novel class of conserved motif, yet its specificity is allosterically altered through evolution of enzyme oligomerization.
    1. Computational and Systems Biology
    2. Physics of Living Systems

    Epistasis and entrenchment of drug resistance in HIV-1 subtype B

    Avik Biswas et al.
    Drug resistance in HIV is the result of mutations, which affect fitness depending on epistatic interactions with the entire sequence background that varies within and between patient populations.
    1. Developmental Biology
    2. Evolutionary Biology

    Embryo polarity in moth flies and mosquitoes relies on distinct old genes with localized transcript isoforms

    Yoseop Yoon et al.
    Isoform-specific transcript localization underlies the evolutionary diversity of anterior axis determinants in embryos of dipteran insects.
    1. Developmental Biology
    2. Evolutionary Biology

    Evolutionary emergence of Hairless as a novel component of the Notch signaling pathway

    Steven W Miller et al.
    Hairless emerged as an evolutionarily novel regulatory protein that replaced an ancestral paradigm of direct co-repressor recruitment by Suppressor of Hairless, its partner transcription factor in the Notch signaling pathway.
    1. Ecology
    2. Evolutionary Biology

    Diverse deep-sea anglerfishes share a genetically reduced luminous symbiont that is acquired from the environment

    Lydia J Baker et al.
    Environmental transmission is atypical of symbionts that have undergone genome degradation, yet genetically reduced deep-sea anglerfish symbionts likely persist in the deep sea biome in search of a new host.

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