2,463 results found
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Sterol homeostasis requires regulated degradation of squalene monooxygenase by the ubiquitin ligase Doa10/Teb4

    Ombretta Foresti et al.
    Parallel branches of the ERAD pathway regulate sterol synthesis at multiple steps via feedback inhibition.
    1. Neuroscience

    Sex-dependent effects of in utero cannabinoid exposure on cortical function

    Anissa Bara et al.
    Adult male, but not female, rats showed altered neuronal function, inhibited synaptic plasticity and diminished social behavior following cannabinoid exposure during gestation in a model of cannabis use during pregnancy.
    1. Cell Biology

    The sterol-responsive RNF145 E3 ubiquitin ligase mediates the degradation of HMG-CoA reductase together with gp78 and Hrd1

    Sam A Menzies et al.
    CRISPR/Cas9 genome-wide screens using sterol-sensitive endogenous HMG-CoA reductase (HMGCR) reporter identify the sterol-responsive RNF145 and gp78 as independently responsible for sterol-accelerated degradation of HMGCR, the rate-limiting enzyme of cholesterol biosynthesis.
    1. Cell Biology

    A new family of StART domain proteins at membrane contact sites has a role in ER-PM sterol transport

    Alberto T Gatta et al.
    A new family of sterol-specific lipid transfer proteins has been found that anchors in the endoplasmic reticulum; some of these proteins stretch across membrane contacts and mediate sterol traffic from the plasma membrane.
    1. Neuroscience

    Steroid hormone induction of temporal gene expression in Drosophila brain neuroblasts generates neuronal and glial diversity

    Mubarak Hussain Syed et al.
    A steroid hormone acts directly on brain neural progenitors to coordinately alter gene expression and specify neuronal and glial cell types.
    1. Biochemistry and Chemical Biology

    Exchange of water for sterol underlies sterol egress from a StARkin domain

    George Khelashvili et al.
    The capture and export of a hydrophobic sterol molecule from the binding pocket of a Lam/GramD1 sterol-binding protein is unexpectedly mediated by water.
    1. Cell Biology
    2. Evolutionary Biology

    Sterol transfer by atypical cholesterol-binding NPC2 proteins in coral-algal symbiosis

    Elizabeth Ann Hambleton et al.
    Diversification of a conserved cholesterol binder drives functional replacement of cholesterol with symbiont-produced sterols in corals living in nutrient-poor environments.
    1. Developmental Biology
    2. Neuroscience

    Mitochondrial fusion but not fission regulates larval growth and synaptic development through steroid hormone production

    Hector Sandoval et al.
    The dual role of Drosophila Mitofusin in steroid hormone production and cholesterol ester storage, which is evolutionary conserved by the combined expression of the two mammalian Mitofusins, ensures proper synaptic development.
    1. Computational and Systems Biology
    2. Structural Biology and Molecular Biophysics

    Local frustration determines loop opening during the catalytic cycle of an oxidoreductase

    Lukas S Stelzl et al.
    The cysteine pair oxidation state in nDsbD acts as a ‘switch’ controlling the presence or absence of frustration in the active-site and determining the dynamic behavior of the cap loop.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Homology sensing via non-linear amplification of sequence-dependent pausing by RecQ helicase

    Yeonee Seol et al.
    The rate of DNA unwinding by RecQ helicases is dramatically modulated by the DNA duplex stability in a geometry-dependent manner, providing an intrinsic mechanism for suppressing illegitimate recombination.

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