3,718 results found
    1. Neuroscience

    Controlling gain one photon at a time

    Gregory W Schwartz, Fred Rieke
    Single absorbed photons trigger adaptational mechanisms that help the retina maintain sensitivity across a wide range of background illumination.
    1. Neuroscience

    Three-dimensional multi-site random access photostimulation (3D-MAP)

    Yi Xue, Laura Waller ... Nicolas Pégard
    A one-photon three-dimensional light sculpture technique has been developed and demonstrated for high spatio-temporal resolution photostimulation and imaging of dozens of neurons in the intact mouse brain in vivo.
    1. Neuroscience

    CaImAn an open source tool for scalable calcium imaging data analysis

    Andrea Giovannucci, Johannes Friedrich ... Eftychios A Pnevmatikakis
    CaImAn is an open-software package that equips the neuroscience community with a set of turnkey, fast and scalable solutions to pre-processing problems arising in single cell calcium imaging data analysis.
    1. Plant Biology
    2. Structural Biology and Molecular Biophysics

    Identification of distinct pH- and zeaxanthin-dependent quenching in LHCSR3 from Chlamydomonas reinhardtii

    Julianne M Troiano, Federico Perozeni ... Gabriela S Schlau-Cohen
    Light-harvesting complex stress-related is a protein from photosynthetic green algae that prevents damage from sunlight via two distinct conformational processes, which protect against different timescales of solar fluctuations.
    1. Structural Biology and Molecular Biophysics

    The primary structural photoresponse of phytochrome proteins captured by a femtosecond X-ray laser

    Elin Claesson, Weixiao Yuan Wahlgren ... Sebastian Westenhoff
    Time-resolved crystallography provides insight into the photochemical reactions in photoreceptor proteins, explaining the earliest steps of how plants, fungi and bacteria sense red light.
    1. Neuroscience

    Sources of widefield fluorescence from the brain

    Jack Waters
    Widefield fluorescence from the brain arises from greater depth and area than typically appreciated and is usually a weighted average across cortical columns and often more than one cortical area.
    1. Physics of Living Systems

    Label-free imaging of M1 and M2 macrophage phenotypes in the human dermis in vivo using two-photon excited FLIM

    Marius Kröger, Jörg Scheffel ... Maxim E Darvin
    The noninvasive visualization of dermal M1 and M2 macrophage phenotypes is shown for the first time in vivo.
    1. Physics of Living Systems
    2. Computational and Systems Biology

    Overall energy conversion efficiency of a photosynthetic vesicle

    Melih Sener, Johan Strumpfer ... Klaus Schulten
    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. Computational and Systems Biology
    2. Neuroscience

    Microsaccadic sampling of moving image information provides Drosophila hyperacute vision

    Mikko Juusola, An Dau ... Jouni Takalo
    New experiments and theory reveal how the ability to see image details depends upon photoreceptor function and eye movements, and how fruit flies (Drosophila) see spatial details beyond the optical limit of their compound eyes.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Coupling of remote alternating-access transport mechanisms for protons and substrates in the multidrug efflux pump AcrB

    Thomas Eicher, Markus A Seeger ... Klaas M Pos
    A transport mechanism is uncovered in the major drug-efflux system in E. coli involving two remote alternating-access conformational cycles, which could provide the basis for the development of allosteric inhibitors against multidrug resistance.

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