105 results found
    1. Biochemistry and Chemical Biology
    2. Genetics and Genomics

    Evolution of substrate specificity in a retained enzyme driven by gene loss

    Ana Lilia Juárez-Vázquez et al.
    An integrated biochemical and evolutionary analysis shows how enzyme specificity evolves after gene loss during genome decay, implicating relaxation of purifying selection as a driving force for functional divergence.
    1. Computational and Systems Biology
    2. Microbiology and Infectious Disease

    Microbiome: Does disease start in the mouth, the gut or both?

    Andrei Prodan et al.
    Oral bacteria colonize the gut more frequently than previously thought.
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    1. Developmental Biology

    In vivo study of gene expression with an enhanced dual-color fluorescent transcriptional timer

    Li He et al.
    A simple and effective method facilitates the study of in vivo transcriptional dynamics using transcriptional enhancers and destabilized fluorescent protein, which is suitable for both live imaging and fixed studies.
    1. Neuroscience

    Molecular and anatomical organization of the dorsal raphe nucleus

    Kee Wui Huang et al.
    The dorsal raphe nucleus contains transcriptionally diverse cell classes that include subtypes of serotonergic neurons with distinct molecular and anatomical signatures.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Proteotoxicity from aberrant ribosome biogenesis compromises cell fitness

    Blake W Tye et al.
    Rapidly proliferating cells are at risk of compromised cell fitness due to proteostasis collapse from perturbations that interfere with ribosome biogenesis.
    1. Cancer Biology

    SPIN1 promotes tumorigenesis by blocking the uL18 (universal large ribosomal subunit protein 18)-MDM2-p53 pathway in human cancer

    Ziling Fang et al.
    SPIN1, a nucleolar protein, plays an oncogenic role by suppressing the tumor suppressor p53's function via regulation of the uL18-MDM2-p53 pathway.
    1. Neuroscience

    Physiological and pathophysiological control of synaptic GluN2B-NMDA receptors by the C-terminal domain of amyloid precursor protein

    Paula A Pousinha et al.
    The APP intracellular domain (AICD) physiologically regulates synaptic GluN2B-containing NMDA receptor current, a process that could contribute to pathological Alzheimer's disease-related synaptic failure upon increase of AICD levels in adult neurons.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    IRF4 haploinsufficiency in a family with Whipple’s disease

    Antoine Guérin et al.
    Autosomal dominant IRF4 deficiency is the first genetic etiology of Whipple's disease, a very rare chronic condition following a rather common infection by Tropheryma whipplei.
    1. Immunology and Inflammation

    Empty conformers of HLA-B preferentially bind CD8 and regulate CD8+ T cell function

    Jie Geng et al.
    HLA-B*35:01 molecules that are peptide-deficient are thermostable, bind CD8 with higher affinity than their peptide-filled versions, accumulate at immunological synapses and enhance antigen-specific CD8+ T cell immune responses.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Ribosomal mutations promote the evolution of antibiotic resistance in a multidrug environment

    James E Gomez et al.
    Mutations in several components of a bacterial ribosome are shown to broadly decrease antibiotic and stress sensitivity, and readily accessible reversion mutations allow these ribosomal mutations to serve as stepping stones to high level antibiotic resistance.

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