6,476 results found
    1. Neuroscience

    A resource-rational theory of set size effects in human visual working memory

    Ronald van den Berg, Wei Ji Ma
    Set size effects in visual working memory are explained as a resource-rational trade-off between an error-based behavioral cost and a neural encoding cost.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Organisms with alternative genetic codes resolve unassigned codons via mistranslation and ribosomal rescue

    Natalie Jing Ma et al.
    Cells resolve unassigned codons with near-cognate suppression, frameshifting, and ribosomal rescue mechanisms, demonstrating that unassigned codons are permissible in both natural and engineered genetic codes as barriers to horizontal gene transfer.
    1. Computational and Systems Biology
    2. Immunology and Inflammation

    Stimulation strength controls the rate of initiation but not the molecular organisation of TCR-induced signalling

    Claire Y Ma et al.
    The strength of TCR signalling determines the rate at which cells initiate a tightly coordinated signalling programme, without altering its organization.
    1. Microbiology and Infectious Disease

    The Mla pathway in Acinetobacter baumannii has no demonstrable role in anterograde lipid transport

    Matthew J Powers et al.
    An outer membrane vesicle pulse-chase assay demonstrates that the Acinetobacter baumannii Mla system is a retrograde lipid transporter.
    1. Cell Biology
    2. Genetics and Genomics

    Selections that isolate recombinant mitochondrial genomes in animals

    Hansong Ma, Patrick H O'Farrell
    Recombinant mitochondrial genomes can be selected, traits can be genetically mapped and new genetic combinations can be made.
    1. Chromosomes and Gene Expression
    2. Neuroscience

    A transcriptomic taxonomy of Drosophila circadian neurons around the clock

    Dingbang Ma et al.
    Drosophila clock neurons manifest remarkable heterogeneity, which might be generally true and help explain why Drosophila has a sophisticated behavioral repertoire despite a tiny brain of about 100,000 neurons.
    1. Physics of Living Systems

    Munc18-1-regulated stage-wise SNARE assembly underlying synaptic exocytosis

    Lu Ma et al.
    The Munc18-1 protein promotes formation of the t-SNARE complex and the half-zippered SNARE complex, two rate-limiting steps of SNARE assembly, to enhance membrane fusion.
    1. Microbiology and Infectious Disease

    TRIM28 promotes HIV-1 latency by SUMOylating CDK9 and inhibiting P-TEFb

    Xiancai Ma et al.
    TRIM28 was found to be a versatile dual-function latency contributor by bridging both suppressive epigenetic modifications and RNAP II transcriptional-pausing, and can be a novel target to develop latency-reversing agents.
    1. Biochemistry and Chemical Biology

    Mechanisms of iron- and O2-sensing by the [4Fe-4S] cluster of the global iron regulator RirA

    Ma Teresa Pellicer Martinez et al.
    Molecular details of how the iron–sulfur cluster cofactor of a bacterial global iron regulatory protein simultaneously senses iron and O2 are revealed by mass spectrometry and spectroscopy.
    1. Biochemistry and Chemical Biology

    Nicotinamide mononucleotide adenylyltransferase uses its NAD+ substrate-binding site to chaperone phosphorylated Tau

    Xiaojuan Ma et al.
    Mechanistic insight into the chaperone-like activity of NMNAT to phosphorylated Tau reveals a connection between NAD+metabolism and Tau homeostasis.

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