59 results found
    1. Structural Biology and Molecular Biophysics

    Cryo-EM structure of respiratory complex I at work

    Kristian Parey et al.
    The site of ubiquinone binding observed in the cryo-EM structure of respiratory complex I during turnover supports a two-state stabilization change mechanism.
    1. Epidemiology and Global Health
    2. Microbiology and Infectious Disease

    Alternative splicing of coq-2 controls the levels of rhodoquinone in animals

    June H Tan et al.
    The switch from ubiquinone to rhodoquinone synthesis that is required for parasitic helminths to survive in anaerobic host tissues is due to alternative splicing of polyprenyltransferase COQ-2.
    1. Structural Biology and Molecular Biophysics

    Structure of Escherichia coli respiratory complex I reconstituted into lipid nanodiscs reveals an uncoupled conformation

    Piotr Kolata, Rouslan G Efremov
    The dynamic structure of respiratory complex I from mesophilic bacterium is revealed and demonstrates existence of uncoupled conformations in the bacterial complex.
    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. Structural Biology and Molecular Biophysics

    Sequence co-evolution gives 3D contacts and structures of protein complexes

    Thomas A Hopf et al.
    Interactions in protein complexes can be predicted from evolutionary information from genomic sequences.
    1. Epidemiology and Global Health
    2. Microbiology and Infectious Disease

    Identification of drugs associated with reduced severity of COVID-19 – a case-control study in a large population

    Ariel Israel et al.
    Large-scale retrospective analysis suggests medications and dietary supplements, such as rosuvastatin, ezetimibe, ubiquinone, risedronate, vitamin D, and magnesium, are associated with a lower rate of severe COVID-19 disease.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Atomic structure of a mitochondrial complex I intermediate from vascular plants

    Maria Maldonado et al.
    The first atomic resolution structure of a mitochondrial respiratory complex from plants provides insight into the assembly and evolution of respiration in autotrophic eukaryotes.
    1. Physics of Living Systems
    2. Computational and Systems Biology

    Overall energy conversion efficiency of a photosynthetic vesicle

    Melih Sener et al.
    The overall energy conversion efficiency is calculated for a bacterial vesicle that harvests solar energy for ATP production on the basis of an atomic-detail structural model.
    1. Structural Biology and Molecular Biophysics

    Functional asymmetry and electron flow in the bovine respirasome

    Joana S Sousa et al.
    Cryo-EM structure of the mammalian respiratory supercomplex containing complexes I, III and IV shows a functional asymmetry of complex III, providing strong evidence for directed electron flow in the respirasome.
    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.

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