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

    Role of Tim17 in coupling the import motor to the translocation channel of the mitochondrial presequence translocase

    Keren Demishtein-Zohary et al.
    First two transmembrane segments of Tim17 are involved in interaction with the channel and the second two with the motor of the presequence translocase suggesting how proteins are handed over during their translocation into mitochondria.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structural insight into the activation of a class B G-protein-coupled receptor by peptide hormones in live human cells

    Lisa Seidel et al.
    Agonist and antagonist peptides of the corticotropin-releasing factor receptor type 1 adopt different folds and stabilize distinct conformations of the receptor transmembrane domain, which involves tilting of helices VI and VII around conserved glycine hinges.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Rapid and iterative genome editing in the malaria parasite Plasmodium knowlesi provides new tools for P. vivax research

    Franziska Mohring et al.
    Optimised genome editing in P. knowlesi enables transgenic expression of a lead P. vivax vaccine candidate, revealing roles in host cell tropisms and providing tools for scalable vaccine efficacy testing.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Protein translocation channel of mitochondrial inner membrane and matrix-exposed import motor communicate via two-domain coupling protein

    Rupa Banerjee et al.
    Two domains of the peripheral membrane protein Tim44 interact with two different sectors of a translocase to coordinate the translocation of proteins across the inner mitochondrial membrane.
    1. Biochemistry and Chemical Biology

    Nonenzymatic copying of RNA templates containing all four letters is catalyzed by activated oligonucleotides

    Noam Prywes et al.
    Nonenzymatic polymerization can copy templates containing all four RNA monomers, a prerequisite for the transition to the RNA world.
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    Structural snapshots of Xer recombination reveal activation by synaptic complex remodeling and DNA bending

    Aleksandra Bebel et al.
    DNA-bound crystal structures of an essential Xer site-specific recombinase from the bacterium Helicobacter pylori reveal how large conformational changes initiate the untangling of chromosomes upon cell division.
    1. Plant Biology

    A novel role for the root cap in phosphate uptake and homeostasis

    Satomi Kanno et al.
    Real-time 33P imaging combined with specific complementation of inorganic phosphate transport in the root cap reveals this tissue’s contribution to phosphate uptake.
    1. Cancer Biology

    Squamous trans-differentiation of pancreatic cancer cells promotes stromal inflammation

    Tim DD Somerville et al.
    A major consequence of ductal-to-squamous lineage transition in pancreatic cancer cells is to augment inflammation, which may explain the exceptionally poor clinical outcomes of squamous-subtype tumors.
    1. Developmental Biology

    Vg1-Nodal heterodimers are the endogenous inducers of mesendoderm

    Tessa G Montague, Alexander F Schier
    Nodal is assumed to be the sole inducer of mesendoderm, but the related signal Vg1 is as essential as Nodal in this process.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    An essential dual-function complex mediates erythrocyte invasion and channel-mediated nutrient uptake in malaria parasites

    Daisuke Ito et al.
    Gene knockdowns reveal that the conserved RhopH protein complex functions in both host cell invasion and channel-mediated nutrient uptake in malaria.

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