2,333 results found
    1. Neuroscience

    ON selectivity in the Drosophila visual system is a multisynaptic process involving both glutamatergic and GABAergic inhibition

    Sebastian Molina-Obando et al.
    A fundamental visual computation, the establishment of ON selectivity, is established across distributed circuits, allowing for more robust and flexible coding than suggested by core circuit motifs.
    1. Neuroscience

    A common directional tuning mechanism of Drosophila motion-sensing neurons in the ON and in the OFF pathway

    Juergen Haag et al.
    A common mechanism for computation of direction selectivity in the ON and OFF channel is demonstrated.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Apicomplexan-like parasites are polyphyletic and widely but selectively dependent on cryptic plastid organelles

    Jan Janouškovec et al.
    Apicomplexan-like parasites originated several times independently and many of them contain cryptic plastid organelles, which demonstrate that the parasites evolved from photosynthetic algae.
    1. Neuroscience

    Vision: Framing orientation selectivity

    Floris P de Lange, Matthias Ekman
    The ongoing debate on the neural basis of orientation selectivity in the primary visual cortex continues.
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    1. Neuroscience

    The computation of directional selectivity in the Drosophila OFF motion pathway

    Eyal Gruntman et al.
    ON and OFF visual motion is computed with the same algorithm despite differences in circuit architecture.
    1. Structural Biology and Molecular Biophysics

    The ion selectivity filter is not an activation gate in TRPV1-3 channels

    Andrés Jara-Oseguera et al.
    The TRPV1, TRPV2 and TRPV3 channels are gated on the cytosolic side of the pore, whereas structural changes in the ion selectivity filter associated with activation don't control cation access.
    1. Structural Biology and Molecular Biophysics

    Reconstitution of selective HIV-1 RNA packaging in vitro by membrane-bound Gag assemblies

    Lars-Anders Carlson et al.
    In vitro reconstitution shows how HIV-1 Gag assemblies on membranes can package the RNA genome in the presence of a vast excess of competing cellular RNAs, and that selectivity and immature lattice assembly are deeply intertwined with one another.
    1. Neuroscience

    Deconstruction of the beaten Path-Sidestep interaction network provides insights into neuromuscular system development

    Hanqing Li et al.
    A network, composed of 22 relatives of the Beaten Path and Sidestep immunoglobulin superfamily cell surface proteins, also includes several neuronal Beaten Path subfamily receptors which interact selectively with Sidestep subfamily proteins expressed on peripheral tissues.
    1. Neuroscience

    Visual processing of informative multipoint correlations arises primarily in V2

    Yunguo Yu et al.
    Building on recent findings that central sensory processing allocates resources according to the informativeness of statistical features (Hermundstad et al., 2014), we identify visual area V2 as the site of the relevant computations for local image statistics, thus providing a common underpinning for diverse aspects of its neuronal selectivity.
    1. Structural Biology and Molecular Biophysics

    Nuclear export receptor CRM1 recognizes diverse conformations in nuclear export signals

    Ho Yee Joyce Fung et al.
    Building on previous work (Fung et al., 2015), the structures of eight new nuclear export signal (NES) peptides bound to Exportin CRM1 are reported, revealing striking diversity in NES structures, a small conserved secondary structural element, and a CRM1 residue that functions as a selectivity filter.

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