18 results found
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Structure of a pore-blocking toxin in complex with a eukaryotic voltage-dependent K+ channel

    Anirban Banerjee et al.
    Charybdotoxin, a toxin produced by scorpions, blocks a K+ channel by binding in a lock-and-key fashion to the mouth of the channel and presenting a lysine amino group, which serves as a K+ mimic in the selectivity filter.
    1. Structural Biology and Molecular Biophysics

    Tarantula toxins use common surfaces for interacting with Kv and ASIC ion channels

    Kanchan Gupta et al.
    The tarantula toxins psalmotoxin and guangxitoxin have a similar concave surface for interacting with α-helices in voltage-gated and acid-sensing ion channels.
    1. Structural Biology and Molecular Biophysics

    Molecular structures of the human Slo1 K+ channel in complex with β4

    Xiao Tao, Roderick MacKinnon
    The structures of Slo1 in complex with b4 imply that the auxiliary beta subunits modulate the channel's gating properties through stabilizing ‘pre-existing’ conformations rather than creating new ones.
    1. Ecology
    2. Evolutionary Biology

    Dynamics of venom composition across a complex life cycle

    Yaara Y Columbus-Shenkar et al.
    Different developmental stages of a venomous animal (e.g. Nematostella vectensis) with a complex life cycle produce vastly different venoms that can serve in different antagonistic interactions with other species.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Trans-toxin ion-sensitivity of charybdotoxin-blocked potassium-channels reveals unbinding transitional states

    Hans Moldenhauer et al.
    Detection of unbinding transitional states in the charybdotoxin first-order dissociation from a Kv-channel reveals that the bound neurotoxin wobbles, suggesting diverse intermediates and dissociation pathways in this protein–protein interaction.
    1. Cell Biology
    2. Plant Biology

    Parallel global profiling of plant TOR dynamics reveals a conserved role for LARP1 in translation

    M Regina Scarpin et al.
    Plants and humans use a shared mechanism, the eukaryotic metabolic sensor TARGET OF RAPAMYCIN protein kinase and its substrate, an RNA-binding protein called LARP1, to coordinate post-transcriptional gene expression.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Slo1 is the principal potassium channel of human spermatozoa

    Nadja Mannowetz et al.
    Potassium ions enter and leave human sperm cells via a calcium-dependent ion channel that is also pH-independent.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Genome streamlining in a minute herbivore that manipulates its host plant

    Robert Greenhalgh et al.
    The genome of a tiny tomato pest reveals mechanisms that underlie metazoan genome reduction.
    1. Neuroscience

    IK1 channels do not contribute to the slow afterhyperpolarization in pyramidal neurons

    Kang Wang et al.
    The slow afterhyperpolarization that follows a burst of action potentials is a powerful regulator of neuronal excitability and is not due to IK1 (KCNN4), a member of the SK channel family.

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