247 results found
    1. Cell Biology
    2. Neuroscience

    Large-scale cell-type-specific imaging of protein synthesis in a vertebrate brain

    Or David Shahar, Erin Margaret Schuman
    The development of a transgenic zebrafish allows for cell-type-specific labeling of neuronal protein synthesis, enabling brain-wide visualization and quantification of protein synthesis and demonstrating region-specific increases following elevated brain activity.
    1. Chromosomes and Gene Expression

    CRISPRi is not strand-specific at all loci and redefines the transcriptional landscape

    Françoise S Howe et al.
    CRISPR interference (CRISPRi), which uses small guide RNAs to target catalytically dead Cas9 protein to chromatin, disrupts existing transcription units and generates new sites for initiation and termination of transcription on both strands of DNA.
    1. Biochemistry and Chemical Biology

    Lack of activity of recombinant HIF prolyl hydroxylases (PHDs) on reported non-HIF substrates

    Matthew E Cockman et al.
    Assays using recombinant HIF prolyl hydroxylases did not support hydroxylation of more than 20 reported non-HIF substrates under conditions where robust HIF hydroxylation was observed.
    1. Microbiology and Infectious Disease

    Profiling of myristoylation in Toxoplasma gondii reveals an N-myristoylated protein important for host cell penetration

    Malgorzata Broncel et al.
    Myristoylation of a secreted protein, identified in a global myristoylation analysis of the eukaryotic parasite Toxoplasma gondii, is important for host cell invasion.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Molecular basis for substrate specificity of the Phactr1/PP1 phosphatase holoenzyme

    Roman O Fedoryshchak et al.
    Interaction of cofactor Phactr1 with PP1 creates a composite substrate-binding surface that defines the sequence specificity of the Phactr1/PP1 holoenzyme.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Mutations in SKI in Shprintzen–Goldberg syndrome lead to attenuated TGF-β responses through SKI stabilization

    Ilaria Gori et al.
    The mechanism underlying Shprintzen–Goldberg syndrome is solved and reveals that missense mutations in the transcriptional repressor SKI abolish ligand-induced SKI degradation, which results in attenuation of TGF-β transcriptional responses.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    3D visualization of macromolecule synthesis

    Timothy J Duerr et al.
    Whole mount 3D visualization of macromolecule synthesis with light sheet fluorescence microscopy enables quantitative, multiscale analysis at the organ, cellular, and molecular levels of organization.
    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. Cell Biology

    Intracellular sphingosine releases calcium from lysosomes

    Doris Höglinger et al.
    Sphingosine acts as a lipid messenger molecule in intracellular signaling networks that are relevant to lysosomal function and Niemann-Pick disease.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Exploring structural dynamics of a membrane protein by combining bioorthogonal chemistry and cysteine mutagenesis

    Kanchan Gupta et al.
    A facile method is implemented to modify membrane proteins with biophysical reporters using cysteine-independent approaches in live cells.

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