1,687 results found
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Competitive binding of MatP and topoisomerase IV to the MukB hinge domain

    Gemma LM Fisher et al.
    Topoisomerase IV and the ter-binding protein MatP competitively bind the hinge domain of the Escherichia coli Structural Maintenance of Chromosomes complex, MukB, leading to spatiotemporal regulation of MukBEF-topoisomerase IV activity.
    1. Neuroscience

    Early life experience sets hard limits on motor learning as evidenced from artificial arm use

    Roni O Maimon-Mor et al.
    Biological- or artificial-arm experience during early development has a significant effect on artificial-arm motor control in adulthood, providing evidence for limited sensorimotor plasticity beyond childhood.
    1. Neuroscience

    Memory recall involves a transient break in excitatory-inhibitory balance

    Renée S Koolschijn et al.
    Hippocampal activity during memory recall predicts a transient increase in the ratio between neocortical glutamate and GABA, thereby allowing otherwise dormant memories to be released.
    1. Neuroscience

    Skipping ahead: A circuit for representing the past, present, and future

    Jennifer C Robinson, Mark P Brandon
    A circuit between the hippocampus, nucleus reunions, and prefrontal cortex organizes information about the past, present, and future into alternating theta sequences.
    1. Evolutionary Biology
    2. Physics of Living Systems

    Evolution of irreversible somatic differentiation

    Yuanxiao Gao et al.
    Irreversible differentiation into somatic cells is evolutionarily optimal if changing cell phenotype is costly, a few somatic cells already improve the organism's performance, and the organism is large enough.
    1. Biochemistry and Chemical Biology
    2. Ecology

    Secondary metabolites of Hülle cells mediate protection of fungal reproductive and overwintering structures against fungivorous animals

    Li Liu et al.
    Xanthones produced by the filamentous fungus Aspergillus nidulans protect its sexual structures from predation by arthropods.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    An improved fluorescent noncanonical amino acid for measuring conformational distributions using time-resolved transition metal ion FRET

    William N Zagotta et al.
    Time-resolved transition metal ion fluorescence resonance energy transfer using a fluorescent, noncanonical amino acid donor and metal ion acceptor measures distances and distance distributions in proteins, allowing the equilibrium distributions among conformational states to be accurately determined.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Common host variation drives malaria parasite fitness in healthy human red cells

    Emily R Ebel et al.
    Human red blood cells from healthy donors display marked biophysical and genetic variation that impacts the growth of Plasmodium falciparum malaria parasites, outside of known disease alleles.

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