7,611 results found
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Sec17/Sec18 act twice, enhancing membrane fusion and then disassembling cis-SNARE complexes

    Hongki Song et al.
    Sec17 (αSNAP) and Sec18 (NSF) are shown to act twice, to promote fusion per se and to recycle SNAREs after fusion.
    1. Neuroscience

    The Na+/Ca2+, K+ exchanger NCKX4 is required for efficient cone-mediated vision

    Frans Vinberg et al.
    Molecular, genetic, and functional analysis is used to show that the olfactory Na+/Ca2+, K+ exchanger NCKX4 is expressed in cone photoreceptors and is critical for the wide operating range and high temporal resolution of cone-mediated vision.
    1. Cell Biology
    2. Developmental Biology

    Cytokine receptor-Eb1 interaction couples cell polarity and fate during asymmetric cell division

    Cuie Chen et al.
    A separation-of-function mutation reveals that a niche ligand receptor Dome functions in spindle orientation during asymmetric stem cell division by directly binding to Eb1, independent of its role in downstream JAK-STAT signaling.
    1. Microbiology and infectious disease

    Asymmetric division triggers cell-specific gene expression through coupled capture and stabilization of a phosphatase

    Niels Bradshaw, Richard Losick
    Asymmetric cell division is linked to cell-specific transcription by handoff of a key developmental regulator from the cytokinetic machinery to the adjacent cell pole where it oligomerizes to become stabilized and activated.
    1. Biochemistry and Chemical Biology

    HOPS recognizes each SNARE, assembling ternary trans-complexes for rapid fusion upon engagement with the 4th SNARE

    Hongki Song et al.
    The tethering complex HOPS employs affinity for each of the 4 SNAREs to catalyze assembly of 3-SNARE intermediates, supporting an immediate burst of membrane fusion triggered by the 4th SNARE.
    1. Cell Biology
    2. Neuroscience

    Neurotrophins induce fission of mitochondria along embryonic sensory axons

    Lorena Armijo-Weingart et al.
    Induction of the fission of mitochondria-populating sensory axons is shown to be a novel biological action of neurotrophins.
    1. Cell Biology
    2. Developmental Biology

    Mitochondrial fusion is required for spermatogonial differentiation and meiosis

    Grigor Varuzhanyan et al.
    Mitochondrial fusion enables a metabolic transition during spermatogenesis.
    1. Microbiology and Infectious Disease

    Shed EBA-175 mediates red blood cell clustering that enhances malaria parasite growth and enables immune evasion

    May M Paing et al.
    Plasmodium falciparum invasion protein EBA-175, once shed from the parasite surface post invasion, facilitates RBC clustering and enhances parasite growth while simultaneously enabling parasite immune evasion of host neutralizing antibodies.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Fusion surface structure, function, and dynamics of gamete fusogen HAP2

    Juan Feng et al.
    Structure, dynamics, and mutation of a gamete fusion protein and comparisons to viral homologues suggest that after trimerization the domain bearing the membrane-inserting fusion loops can pivot with respect to the trimer 3-fold axis.
    1. Neuroscience

    v-SNARE transmembrane domains function as catalysts for vesicle fusion

    Madhurima Dhara et al.
    Structural flexibility of the synaptobrevin-2 transmembrane domain promotes membrane fusion.

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