5,871 results found
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structural insights into the assembly and polyA signal recognition mechanism of the human CPSF complex

    Marcello Clerici et al.
    Structural, biochemical, and proteomic analyses of a four-subunit core module of the cleavage and polyadenylation specificity factor complex reveal its molecular architecture and specific determinants of polyadenylation signal recognition in human mRNAs.
    1. Microbiology and Infectious Disease

    A lipoprotein/β-barrel complex monitors lipopolysaccharide integrity transducing information across the outer membrane

    Anna Konovalova et al.
    Mutations that block assembly of the interlocked RcsF/β barrel protein complex prevent detection of lipopolysaccharide stress and activation of Rcs signal transduction pathway.
    1. Neuroscience

    Inhibition in the auditory brainstem enhances signal representation and regulates gain in complex acoustic environments

    Christian Keine et al.
    Inhibition in the brainstem has further roles beyond temporal sharpening and improves reproduction for a multitude of sounds.
    1. Cell Biology
    2. Immunology and Inflammation

    Transient protein accumulation at the center of the T cell antigen-presenting cell interface drives efficient IL-2 secretion

    Danielle J Clark et al.
    A membrane-associated, supramolecular protein complex with dynamically changing components, the central supramolecular activation cluster, regulates the generation of the T cell effector cytokine IL-2 depending on its composition.
    1. Evolutionary Biology

    The structure of species discrimination signals across a primate radiation

    Sandra Winters et al.
    Machine learning and experimental tests of receiver bias identify signal components critical to correct species classification in guenons, linking face pattern diversity to selection for species discrimination.
    1. Cell Biology

    Phosphorylation of β-arrestin2 at Thr383 by MEK underlies β-arrestin-dependent activation of Erk1/2 by GPCRs

    Elisabeth Cassier et al.
    Phosphoproteomics identifies β-arrestin 2 phosphorylation at Thr383 by MEK as a key step of GPCR-induced Erk½ activation, thus providing new insight into the molecular mechanism underlying β-arrestin-dependent GPCR-operated signaling.
    1. Structural Biology and Molecular Biophysics

    Rac1 GTPase activates the WAVE regulatory complex through two distinct binding sites

    Baoyu Chen et al.
    The cryo-electron microscopy structure of an assembly of the WAVE Regulatory Complex and its activator, the Rac GTPase, plus complementary biochemistry and biophysics, reveal a novel activation mechanism involving two distinct Rac binding sites.
    1. Structural Biology and Molecular Biophysics
    2. Developmental Biology

    An ancient Pygo-dependent Wnt enhanceosome integrated by Chip/LDB-SSDP

    Marc Fiedler et al.
    The Chip/LDB-SSDP complex integrates multiple signals to render TCF/LEF enhancers Wnt responsive.
    1. Biochemistry and Chemical Biology
    2. Cancer Biology

    The DREAM complex through its subunit Lin37 cooperates with Rb to initiate quiescence

    Christina FS Mages et al.
    Lin37 is essential for cell-cycle gene repression by the DREAM complex in cellular quiescence and a combined loss of Lin37 and Rb prevents cell-cycle exit in response to growth-limiting signals.
    1. Cell Biology
    2. Computational and Systems Biology

    Signaling pathways as linear transmitters

    Harry Nunns, Lea Goentoro
    Mathematical and experimental analyses suggest that despite their complex architectures, multiple metazoan signaling pathways act in physiological contexts as linear signal transmitters.

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