3,258 results found
    1. Computational and Systems Biology
    2. Developmental Biology

    Rapid changes in morphogen concentration control self-organized patterning in human embryonic stem cells

    Idse Heemskerk et al.
    Live cell imaging demonstrates that the dynamics of ligand presentation influence signaling through two closely related morphogen signaling pathways in dramatically different ways.
    1. Structural Biology and Molecular Biophysics

    Real time dynamics of Gating-Related conformational changes in CorA

    Martina Rangl et al.
    High-speed atomic force microscopy reveals that the open state of the divalent ion channel CorA is highly dynamic and defined by the fast exchange between conformations.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Pausing guides RNA folding to populate transiently stable RNA structures for riboswitch-based transcription regulation

    Hannah Steinert et al.
    The discontinuous speed of transcription enables riboswitch molecules to adopt meta-stable structures in response to the presence of their cognate ligand, thereby gene-regulation by means of structure induced transcription termination can occur.
    1. Structural Biology and Molecular Biophysics

    Symmetry transitions during gating of the TRPV2 ion channel in lipid membranes

    Lejla Zubcevic et al.
    Ligand-induced two-fold symmetric arrangement in TRPV2 is observed in the native-like nanodisc-reconstituted condition using cryo-electron microscopy.
    1. Biochemistry and Chemical Biology

    Rational design of aptazyme riboswitches for efficient control of gene expression in mammalian cells

    Guocai Zhong et al.
    An empirically derived scoring system for identifying optimal communication modules of aptazymes accelerates the development of ligand-responsive RNA genetic switches functional in mammalian cells.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Measuring ligand efficacy at the mu-opioid receptor using a conformational biosensor

    Kathryn E Livingston et al.
    Opioid drug efficacy and allosteric modulation is measured using an active state sensor of the mu-opioid receptor.
    1. Structural Biology and Molecular Biophysics

    Activation mechanism of ATP-sensitive K+ channels explored with real-time nucleotide binding

    Michael Puljung et al.
    A combined FRET- and electrophysiology-based approach is used to study ATP/ADP ADP binding to the stimulatory nucleotide binding site of ATP-sensitive K+ channels and investigate their activation mechanism.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Positively selected modifications in the pore of TbAQP2 allow pentamidine to enter Trypanosoma brucei

    Ali H Alghamdi et al.
    Study of TbAQP2 adaptations and substrate interactions shows how this aquaglyceroporin enables cellular entry of large antimicrobial agents in Trypanosoma brucei.
    1. Plant Biology

    The manifold actions of signaling peptides on subcellular dynamics of a receptor specify stomatal cell fate

    Xingyun Qi et al.
    A binary cell fate decision to be or not to be stomata is regulated by multiple peptide ligands, each triggering a unique subcellular dynamics of their shared receptor.
    1. Cell Biology

    Complementary α-arrestin-ubiquitin ligase complexes control nutrient transporter endocytosis in response to amino acids

    Vasyl Ivashov et al.
    Metabolic cues enlist ubiquitin ligase adaptors for the selective control of cellular nutrient acquisition strategies.

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