367 results found
    1. Cell Biology

    Bax and Bak function as the outer membrane component of the mitochondrial permeability pore in regulating necrotic cell death in mice

    Jason Karch et al.
    The proteins Bax and Bak, which increase the permeability of the mitochondrial membrane during apoptosis, are also crucial for generating a mitochondrial membrane pore that is specifically involved in necrosis.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Acyl chain asymmetry and polyunsaturation of brain phospholipids facilitate membrane vesiculation without leakage

    Marco M Manni et al.
    The asymmetric combination of saturated and polyunsaturated acyl chains in phospholipids as typically observed in synapses makes membranes prone to deformation and fission without compromising their impermeability.
    1. Developmental Biology

    Autophagic cell death is dependent on lysosomal membrane permeability through Bax and Bak

    Jason Karch et al.
    Molecular pathways controlling autophagic cell death are regulated at the level of the lysosome through the activity of the pro-death Bcl-2 family member Bax/Bak.
    1. Cell Biology

    Magnetic resonance measurements of cellular and sub-cellular membrane structures in live and fixed neural tissue

    Nathan H Williamson et al.
    Low-field single-sided magnetic resonance diffusion methods detect and measure permeability of sub-micron compartments which likely include cell processes, organelles, and cellular vesicles within ex vivo mouse spinal cords.
    1. Structural Biology and Molecular Biophysics

    Atomistic simulations indicate the c-subunit ring of the F1Fo ATP synthase is not the mitochondrial permeability transition pore

    Wenchang Zhou et al.
    The notion that the lumen of the ATP synthase membrane rotor is the long-sought megachannel that triggers the onset of the mitochondrial permeability transition is found to be inconsistent with its actual structural and functional properties.
    1. Microbiology and Infectious Disease

    Two-component Signaling Pathways: A bacterial Goldilocks mechanism

    Irene M Kim, Hendrik Szurmant
    Bacillus subtilis can measure the activity of the enzymes that remodel the cell wall to ensure that the levels of activity are ‘just right’.
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    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Ion Channels: Taking a close look at a large-pore channel

    Pablo S Gaete, Jorge E Contreras
    The structure of pannexin 1, a channel protein with a large pore, has been determined for the first time.
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    1. Structural Biology and Molecular Biophysics

    Structural basis for ion selectivity in TMEM175 K+ channels

    Janine D Brunner et al.
    Structural and functional analysis of a recently discovered non-canonical potassium channel family reveals a unique selectivity filter that is exposed to permeating ions only in the conductive state.

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