146 results found
    1. Evolutionary Biology
    2. Genetics and Genomics

    Independent amylase gene copy number bursts correlate with dietary preferences in mammals

    Petar Pajic et al.
    Comprehensive analyses of amylase duplications and salivary activity across mammals underscore the importance of recurrent copy number variation as a flexible and rapid evolutionary mechanism.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Evolution: Of starch and spit

    Mareike C Janiak
    Animals living alongside humans have multiple copies of the gene for alpha-amylase, the enzyme that breaks down starchy foods, and high levels of this protein in their saliva.
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    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    A cytoplasmic peptidoglycan amidase homologue controls mycobacterial cell wall synthesis

    Cara C Boutte et al.
    Cell wall biosynthesis in mycobacteria is regulated by an unusual post-translational regulatory system that contributes to antibiotic tolerance during stress.
    1. Developmental Biology

    A vitamin-B2-sensing mechanism that regulates gut protease activity to impact animal’s food behavior and growth

    Bin Qi et al.
    The availability of an essential dietary micronutrient is evaluated by an intestinal signaling system that in turn regulates food-uptake and response behaviors by modulating protease expression.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Chemotactic network responses to live bacteria show independence of phagocytosis from chemoreceptor sensing

    Netra Pal Meena, Alan R Kimmel
    Eukaryotic chemotaxis to live bacteria was quantified at a high throughput level, for the first time, and mechanistically examined for the interrelationship between chemotaxis and phagocytosis.
    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. Biochemistry and Chemical Biology
    2. Cell Biology

    SIRT6 regulates Ras-related protein R-Ras2 by lysine defatty-acylation

    Xiaoyu Zhang et al.
    A posttranslational regulatory mechanism for a Ras family small GTPase could open up new directions to understand and control the Ras family of proteins that are important for physiology and diseases.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    PPP1R15A-mediated dephosphorylation of eIF2α is unaffected by Sephin1 or Guanabenz

    Ana Crespillo-Casado et al.
    The notion that the drug-like small molecule Sephin1 protects against protein misfolding by selectively disrupting a cellular phosphatase is refuted.
    1. Developmental Biology
    2. Plant Biology

    Formation of polarity convergences underlying shoot outgrowths

    Katie Abley et al.
    Models that generate tandem alignments of cell polarities are more readily compatible with the formation of PIN1 polarity patterns in plant leaf buds than the most widely accepted “up-the-gradient” model.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Molecular mechanism of activation-triggered subunit exchange in Ca2+/calmodulin-dependent protein kinase II

    Moitrayee Bhattacharyya et al.
    Closed-ring and open-spiral assembly of the multi-subunit neuronal kinase CaMKII suggest a mechanism for how active subunits shuttle between individual assemblies, propagating stimulatory signals.

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