2,528 results found
    1. Cell Biology

    The spatial separation of processing and transport functions to the interior and periphery of the Golgi stack

    Hieng Chiong Tie et al.
    Transport machinery localizes at the cisternal rim while modification machinery localizes at the interior.
    1. Structural Biology and Molecular Biophysics
    2. Microbiology and Infectious Disease

    A structural mechanism for bacterial autotransporter glycosylation by a dodecameric heptosyltransferase family

    Qing Yao et al.
    Protein heptosyltransferases modify a group of bacterial autotransporters for virulence function and employ a novel structural mechanism for the processive hyperglycosylation of the autotransporter.
    1. Developmental Biology

    A novel sphingolipid-TORC1 pathway critically promotes postembryonic development in Caenorhabditis elegans

    Huanhu Zhu et al.
    A lipid acts to promote the development of nematode worm larvae through activation of an enzyme complex called TORC1.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Relief of autoinhibition by conformational switch explains enzyme activation by a catalytically dead paralog

    Oleg A Volkov et al.
    A catalytically dead paralog activates its cognate enzyme through an allosteric mechanism that combined structural and phylogenomic analysis indicates arose through acquisition of a dimerization domain, suggesting a general model for how complex allostery evolves.
    1. Structural Biology and Molecular Biophysics
    2. Computational and Systems Biology

    Transient protein-protein interactions perturb E. coli metabolome and cause gene dosage toxicity

    Sanchari Bhattacharyya et al.
    Weak yet highly species-specific protein-protein interactions enhance the activity of metabolically related enzymes in bacteria at endogenous conditions, but also mean that overexpression of one partner leads to permanent non-physiological complexes and gene dosage toxicity.
    1. Cell Biology
    2. Neuroscience

    Stable G protein-effector complexes in striatal neurons: mechanism of assembly and role in neurotransmitter signaling

    Keqiang Xie et al.
    A G protein in striatal neurons forms preassembled complexes with its downstream enzyme, adenylyl cyclase, which has implications for the pathophysiology of movement disorders.
    1. Structural Biology and Molecular Biophysics

    Atomic model of the F420-reducing [NiFe] hydrogenase by electron cryo-microscopy using a direct electron detector

    Matteo Allegretti et al.
    The structure of a large enzyme complex involved in methanogenesis was determined at high resolution by electron cryo-microscopy.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Human Holliday junction resolvase GEN1 uses a chromodomain for efficient DNA recognition and cleavage

    Shun-Hsiao Lee et al.
    The crystal structure of human Holliday junction resolvase GEN1 in complex with DNA reveals a conserved chromodomain as an additional DNA-anchoring point that opens new perspectives for enzyme regulation.
    1. Cancer Biology
    2. Cell Biology

    Inhibitor of ppGalNAc-T3-mediated O-glycosylation blocks cancer cell invasiveness and lowers FGF23 levels

    Lina Song, Adam D Linstedt
    The first inhibitor identified against an iso-enzyme that initiates O-glycosylation in the Golgi complex promises new therapeutic approaches for cancer and chronic kidney disease.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    The amyloid-beta forming tripeptide cleavage mechanism of γ-secretase

    David M Bolduc et al.
    The protease γ-secretase generates amyloid-beta peptides using a mechanism that is driven by the stabilization of an enzyme-substrate scisson complex.

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