10,417 results found
    1. Genetics and Genomics

    Fast turnover of genome transcription across evolutionary time exposes entire non-coding DNA to de novo gene emergence

    Rafik Neme, Diethard Tautz
    Deep sequencing of transcriptomes from closely related taxa shows that the whole genome can become subject to evolutionary testing within a short time frame via de novo evolution of genes.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Organisms with alternative genetic codes resolve unassigned codons via mistranslation and ribosomal rescue

    Natalie Jing Ma et al.
    Cells resolve unassigned codons with near-cognate suppression, frameshifting, and ribosomal rescue mechanisms, demonstrating that unassigned codons are permissible in both natural and engineered genetic codes as barriers to horizontal gene transfer.
    1. Microbiology and Infectious Disease

    An ECF-type transporter scavenges heme to overcome iron-limitation in Staphylococcus lugdunensis

    Angelika Jochim et al.
    An ECF-type transporter serves as broad-spectrum heme iron scavenger and allows an opportunistic pathogen to use multiple eukaryotic hemoproteins to overcome nutritional iron-limitation.
    1. Cell Biology

    Stress-mediated exit to quiescence restricted by increasing persistence in CDK4/6 activation

    Hee Won Yang et al.
    Application of a live-cell reporter for CDK4/6 activity reveals rapid activity changes and reversibility in the cell-cycle entry signaling program.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Hemozoin produced by mammals confers heme tolerance

    Rini H Pek et al.
    Heme accumulation is toxic, but deficiency of the heme transporter HRG1/SLC48A1 causes heme sequestration and crystallization into hemozoin within enlarged lysosomes of macrophages, thereby conferring heme tolerance to mammals.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    HRI coordinates translation necessary for protein homeostasis and mitochondrial function in erythropoiesis

    Shuping Zhang et al.
    The heme and HRI-mediated eIF2aP–ATF4 integrated stress response in erythropoiesis has a major global impact, especially under the stress condition of iron deficiency.
    1. Neuroscience

    Therapeutic effects of anodal transcranial direct current stimulation in a rat model of ADHD

    Da Hee Jung et al.
    High-definition anodal transcranial stimulation alleviated cognitive deficits, affected dopaminergic neurotransmission factors, increased expression of several neurotrophic factors involving brain-derived neurotrophic factor (BDNF), and activated hippocampal neurogenesis.
    1. Cell Biology
    2. Plant Biology

    The GluTR-binding protein is the heme-binding factor for feedback control of glutamyl-tRNA reductase

    Andreas S Richter et al.
    Heme-dependent feedback inhibition of rate-limiting ALA-synthesis of plant tetrapyrrole biosynthesis depends on binding of heme to glutamyl-tRNA reductase-binding protein.
    1. Neuroscience

    The switch-like expression of heme-regulated kinase 1 mediates neuronal proteostasis following proteasome inhibition

    Beatriz Alvarez-Castelao et al.
    In neurons, inhibition of the proteasome results in feedback inhibition of protein synthesis, mediated by heme-regulated kinase 1, which is optimized to act as both a sensor and an effector.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Deconvoluting heme biosynthesis to target blood-stage malaria parasites

    Paul A Sigala et al.
    Insights into the basic metabolic architecture and adaptations of malaria parasites for growth within human erythrocytes exemplify how incisive knowledge of biochemical pathways and mechanisms may be leveraged to develop new therapies.

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