4,063 results found
    1. Physics of Living Systems
    2. Computational and Systems Biology

    Overall energy conversion efficiency of a photosynthetic vesicle

    Melih Sener et al.
    The overall energy conversion efficiency is calculated for a bacterial vesicle that harvests solar energy for ATP production on the basis of an atomic-detail structural model.
    1. Neuroscience

    Maturation of metabolic connectivity of the adolescent rat brain

    Hongyoon Choi et al.
    Rat brains mature to increase metabolic connectivity between network components and establish energy efficiency in the midline structures from childhood to early adulthood.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Synergy between RecBCD subunits is essential for efficient DNA unwinding

    Rani Zananiri et al.
    A new optical tweezers assay sheds light on the mechanism of cooperation and force generation by the subunits of RecBCD, critical for the repair of double strand breaks in bacteria.
    1. Human Biology and Medicine

    Alleviation of neuronal energy deficiency by mTOR inhibition as a treatment for mitochondria-related neurodegeneration

    Xinde Zheng et al.
    Rapamycin treatment inhibits mTOR activity and preserves ATP levels in neurons derived from induced pluripotent stem cells from a maternally inherited Leigh syndrome patient.
    1. Neuroscience

    Energy efficient synaptic plasticity

    Ho Ling Li, Mark CW van Rossum
    The metabolic efficiency of learning in networks is improved by using forms of synaptic plasticity with different levels of persistence.
    1. Physics of Living Systems
    2. Structural Biology and Molecular Biophysics

    Efficient conversion of chemical energy into mechanical work by Hsp70 chaperones

    Salvatore Assenza et al.
    A multiscale modeling approach reveals how the energy from ATP hydrolysis is used by Hsp70 chaperones to remodel the conformation of their substrates through a novel force-generating mechanism.
    1. Neuroscience

    Cell-intrinsic mechanisms of temperature compensation in a grasshopper sensory receptor neuron

    Frederic A Roemschied et al.
    The firing rates of neurons in the grasshopper auditory system are surprisingly robust to changes in temperature, and cell-intrinsic mechanisms are sufficient to explain this temperature insensitivity.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Distinct RanBP1 nuclear export and cargo dissociation mechanisms between fungi and animals

    Yuling Li et al.
    Animal RanBP1 nuclear export and cargo dissociation mechanisms are surprisingly different from yeast, due to mutations of critical residues, leading to greater nuclear transport efficiency and higher energy cost.
    1. Human Biology and Medicine

    Effects of myosin variants on interacting-heads motif explain distinct hypertrophic and dilated cardiomyopathy phenotypes

    Lorenzo Alamo et al.
    Mapping the locations of hypertrophic cardiomyopathy gene variants onto the three-dimensional structures of contractile proteins revealed that these disrupt protein interactions are critical for normal cardiac relaxation and efficient energy usage.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Direct measurement of conformational strain energy in protofilaments curling outward from disassembling microtubule tips

    Jonathan W Driver et al.
    The protofilaments that curl outward from a disassembling microtubule tip carry a large amount of strain energy and they can drive movement with an efficiency similar to conventional motor proteins.

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