18 results found
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Light-induced depigmentation in planarians models the pathophysiology of acute porphyrias

    Bradford M Stubenhaus et al.
    Physiological porphyrin biosynthesis causes photosensitivity in fasted planarians, providing an experimentally tractable animal model of acute porphyrias.
    1. Developmental Biology

    Erythropoietin signaling regulates heme biosynthesis

    Jacky Chung et al.
    EPO/JAK2/PKA signaling cascade via AKAP10 relocalization to the outer mitochondrial membrane results in the phosphorylation of the terminal heme synthesis enzyme ferrochelatase, which contributes to heme production in red cells.
    1. Evolutionary Biology
    2. Plant Biology

    Evolution of alternative biosynthetic pathways for vitamin C following plastid acquisition in photosynthetic eukaryotes

    Glen Wheeler et al.
    Genomic evidence suggests that L-gulonolactone oxidase-the terminal enzyme in vitamin C synthesis, which has been repeatedly lost throughout animal evolution-was lost in plants and other photosynthetic eukaryotes following plastid acquisition.
    1. Computational and Systems Biology
    2. Evolutionary Biology

    Systematic bacterialization of yeast genes identifies a near-universally swappable pathway

    Aashiq H Kachroo et al.
    Despite billions of years of divergence, a majority of prokaryotic genes can functionally replace their essential eukaryotic counterparts, revealing broad preservation of ancestral functions and identifying heme biosynthesis as a near-universally swappable pathway.
    1. Cell Biology

    Nanobody-directed targeting of optogenetic tools to study signaling in the primary cilium

    Jan N Hansen et al.
    Trafficking of optogenetic tools to primary cilia using nanobodies allows to study cAMP signaling with spatial and temporal resolution independent of the cell body.
    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.
    1. Evolutionary Biology
    2. Plant Biology

    Ascorbate Biosynthesis: A cross-kingdom history

    Alisdair R Fernie, Takayuki Tohge
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    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    A mechanism for the extension and unfolding of parallel telomeric G-quadruplexes by human telomerase at single-molecule resolution

    Bishnu P Paudel et al.
    Human telomerase unfolds and extends parallel G-quadruplexes using a unique mechanism involving its RNA template.
    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. Biochemistry and Chemical Biology

    Mitochondrial ClpX activates an essential biosynthetic enzyme through partial unfolding

    Julia R Kardon et al.
    The mitochondrial protein unfoldase ClpX activates the first enzyme in heme biosynthesis, ALAS, by targeted unfolding that gates access of cofactor to the ALAS active site.

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