24 results found
    1. Structural Biology and Molecular Biophysics

    Monochromatic multicomponent fluorescence sedimentation velocity for the study of high-affinity protein interactions

    Huaying Zhao et al.
    Fluorescence detected sedimentation velocity offers a new method for studying heterogeneous protein interactions in solution by exploiting characteristic temporal signal modulations of photoswitchable fluorescent proteins.
    1. Biochemistry and Chemical Biology
    2. Neuroscience

    Erasable labeling of neuronal activity using a reversible calcium marker

    Fern Sha et al.
    Protein engineering of a reversibly switchable fluorescent protein enables post-hoc reversible and repeatable marking of elevated calcium concentrations using blue light.
    1. Cell Biology

    Super-resolution microscopy reveals majorly mono- and dimeric presenilin1/γ-secretase at the cell surface

    Abril Angélica Escamilla-Ayala et al.
    Super-resolution microscopy sets a new strategy to comprehend the membrane organization of γ-secretase at single complex resolution identifying nanodomain associations and its diffusion in situ in the living membrane.
    1. Chromosomes and Gene Expression

    Transcription factor clusters regulate genes in eukaryotic cells

    Adam JM Wollman et al.
    Transcription factors form clusters independently of the presence of DNA, which regulate target genes as opposed to individual monomers, addressing a longstanding question of how transcription factors can find gene targets so quickly.
    1. Chromosomes and Gene Expression
    2. Developmental Biology

    Dynamic multifactor hubs interact transiently with sites of active transcription in Drosophila embryos

    Mustafa Mir et al.
    The probability of transcription factors binding to their target sites is choreographed through the formation of dynamic multi-protein hubs that transiently interact with actively transcribing genes.
    1. Structural Biology and Molecular Biophysics
    2. Plant Biology

    Kinetics of the LOV domain of ZEITLUPE determine its circadian function in Arabidopsis

    Ashutosh Pudasaini et al.
    In the plant circadian clock photoreceptor ZEITLUPE, evolutionarily selected residues distinguish photocycle kinetics and allosteric signal transduction pathways to permit proper circadian timing.
    1. Developmental Biology
    2. Physics of Living Systems

    Size-dependent patterns of cell proliferation and migration in freely-expanding epithelia

    Matthew A Heinrich et al.
    Epithelia exhibit size-dependent growth dynamics caused by a decoupling between boundary and bulk cellular dynamics that enable robust expansion and drive cell cycling, collective migration, and tissue-spanning vortices.
    1. Biochemistry and Chemical Biology

    Optical manipulation of sphingolipid biosynthesis using photoswitchable ceramides

    Matthijs Kol et al.
    Photoswitchable ceramides containing an azobenzene photoswitch behave as light-controllable substrates for both sphingomyelin synthase and glucosylceramide synthase.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Labeling proteins inside living cells using external fluorophores for microscopy

    Kai Wen Teng et al.
    A toxin is used to introduce an otherwise cell-impermeant fluorophore-antibody (or some thing which is equally specific) to bind to an intracellular protein which allows for super resolution imaging and single particle tracking inside the living cell.

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