3,386 results found
    1. Biochemistry and Chemical Biology
    2. Evolutionary Biology

    Cryptic genetic variation shapes the adaptive evolutionary potential of enzymes

    Florian Baier et al.
    Genetic change among enzyme orthologous with similar phenotypic properties can cause substantial differences in evolutionary response to a new enzyme function in terms of their molecular and fitness outcomes.
    1. Computational and Systems Biology

    Design principles of autocatalytic cycles constrain enzyme kinetics and force low substrate saturation at flux branch points

    Uri Barenholz et al.
    The stability of metabolic autocatalytic cycles that are widespread in central metabolism limits the affinities of enzymes at flux branch points and explains excess expression of these enzymes.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    The vacuolar-ATPase complex and assembly factors, TMEM199 and CCDC115, control HIF1α prolyl hydroxylation by regulating cellular iron levels

    Anna L Miles et al.
    An unbiased genome-wide human forward genetic screen identifies the vacuolar ATPase complex and assembly factors as regulators of HIF stability through their actions on intracellular iron metabolism.
    1. Biochemistry and Chemical Biology

    The structural determinants of PH domain-mediated regulation of Akt revealed by segmental labeling

    Nam Chu et al.
    NMR and biochemical analysis reveal new insights into how the critical protein kinase Akt is regulated by phosphorylation and is inhibited by an experimental therapeutic.
    1. Genetics and Genomics

    Firefly genomes illuminate parallel origins of bioluminescence in beetles

    Timothy R Fallon et al.
    The first genomic view of beetle luciferase evolution indicates evolutionary independence of luciferase between fireflies and click-beetles, and provide valuable datasets which will accelerate the discovery of new biotechnological tools.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Robust cullin-RING ligase function is established by a multiplicity of poly-ubiquitylation pathways

    Spencer Hill et al.
    Human cullin-RING ligases are buffered to a much greater extent than had been previously appreciated, and the roles of ubiquitin chain extension enzymes are far more nuanced at physiological concentrations.
    1. Plant Biology

    Regulation of photosynthetic electron flow on dark to light transition by ferredoxin:NADP(H) oxidoreductase interactions

    Manuela Kramer et al.
    The regulatory switch from protection to assimilation, which plants use to exploit natural, fluctuating light, involves movement of the enzyme ferredoxin:NADP(H) oxidoreductase between chloroplast membrane complexes.
    1. Physics of Living Systems
    2. Structural Biology and Molecular Biophysics

    Proofreading through spatial gradients

    Vahe Galstyan et al.
    Theoretical study shows how enzymes can achieve substrate proofreading by taking advantage of existing molecular gradients in the cell while not being endowed with structural features typically required for proofreading.
    1. Epidemiology and Global Health
    2. Microbiology and Infectious Disease

    Global divergence in critical income for adult and childhood survival: analyses of mortality using Michaelis–Menten

    Ryan J Hum et al.
    A mathematical model based on enzyme kinetics shows how the relationships between life expectancy, survival rates for children and adults, and national income change over time.
    1. Chromosomes and Gene Expression
    2. Plant Biology

    Presence versus absence of CYP734A50 underlies the style-length dimorphism in primroses

    Cuong Nguyen Huu et al.
    CYP734A50 is a heterostyly gene from primroses that underlies the differences in style length between the two forms by degrading growth-promoting hormones in the short styles.

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