11,249 results found
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    Molecular determinants of large cargo transport into the nucleus

    Giulia Paci et al.
    Efficient nuclear transport of very large biomolecules, relevant for viral transport, scales non-linearly with size and its kinetics can be explained by a simple two-parameter energetic model.
    1. Biochemistry and Chemical Biology

    Mechanisms of iron- and O2-sensing by the [4Fe-4S] cluster of the global iron regulator RirA

    Ma Teresa Pellicer Martinez et al.
    Molecular details of how the iron–sulfur cluster cofactor of a bacterial global iron regulatory protein simultaneously senses iron and O2 are revealed by mass spectrometry and spectroscopy.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Large protein organelles form a new iron sequestration system with high storage capacity

    Tobias W Giessen et al.
    An alternative iron storage system based on a 9.6 megadalton microbial protein compartment is able to sequester and store large amounts of iron.
    1. Chromosomes and Gene Expression
    2. Microbiology and Infectious Disease

    A bipartite iron-dependent transcriptional regulation of the tryptophan salvage pathway in Chlamydia trachomatis

    Nick D Pokorzynski et al.
    Analysis of the atypical tryptophan biosynthetic operon of Chlamydia trachomatis revealed the simultaneous regulation of transcriptional initiation and termination by an iron-dependent repressor, expanding known regulatory mechanisms of this pathway.
    1. Microbiology and Infectious Disease
    2. Plant Biology

    Proximity proteomics in a marine diatom reveals a putative cell surface-to-chloroplast iron trafficking pathway

    Jernej Turnšek et al.
    An iron-sensitive gene cluster encodes proteins that co-localize with phytotransferrin endosomes and are involved in key intracellular iron transformation and trafficking processes in a model marine diatom.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    An essential cell-autonomous role for hepcidin in cardiac iron homeostasis

    Samira Lakhal-Littleton et al.
    The novel role of hepcidin in cell-autonomous iron regulation changes our understanding of tissue-specific iron control, and of its interplay with systemic iron homeostasis.
    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
    2. Neuroscience

    Free circular introns with an unusual branchpoint in neuronal projections

    Harleen Saini et al.
    A systematic study of RNA localization unexpectedly finds a set of free circular introns with a non-canonical C branchpoint enriched in neuronal projections.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Integron activity accelerates the evolution of antibiotic resistance

    Célia Souque et al.
    Integrons deploy a variety of adaptive strategies including excision, shuffling, and duplication of cassettes that foster rapid bacterial adaptation and resistance evolution while protecting the genomic integrity of the host.
    1. Cell Biology
    2. Genetics and Genomics

    NHR-14 loss of function couples intestinal iron uptake with innate immunity in C. elegans through PQM-1 signaling

    Malini Rajan et al.
    Nuclear receptor NHR-14 regulates the subcellular localization of the zinc transcription factor PQM-1 to coordinate innate immunity with iron sequestration during pathogen infection in C. elegans..

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