13 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
    2. Human Biology and Medicine

    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. 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. 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. Plant Biology

    Phosphoprotein SAK1 is a regulator of acclimation to singlet oxygen in Chlamydomonas reinhardtii

    Setsuko Wakao et al.
    SAK1, a novel cytoplasmic phosphoprotein, is a key intermediate component of the retrograde signaling pathway controlling nuclear gene expression during acclimation of Chlamydomonas cells to singlet oxygen stress.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Functional and structural characterization of an ECF-type ABC transporter for vitamin B12

    Joana A Santos et al.
    ECF-CbrT is a bacterial vitamin B12 transporter that is structurally different from the well-characterized transporter BtuCDF, yet has similar functional properties.
    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. Evolutionary Biology

    The genomes of polyextremophilic cyanidiales contain 1% horizontally transferred genes with diverse adaptive functions

    Alessandro W Rossoni et al.
    Horizontal gene transfer (HGT) analysis in polyextremophile red algae (Cyanidiales) provides explanations for the nonexistence of cumulative effects and eukaryotic pangenomes, and highlights differences between HGT and native genes.
    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.

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