3,265 results found
    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. Biochemistry and Chemical Biology

    Crystallographic observation of nonenzymatic RNA primer extension

    Wen Zhang et al.
    Time resolved crystal structures reveal the binding of activated monomers to the template, followed by generation of the imidazolium-bridged dinucleotide intermediate, and finally formation of a phosphodiester bond between the primer and the adjacent monomer.
    1. Structural Biology and Molecular Biophysics

    Structural basis of ClpXP recognition and unfolding of ssrA-tagged substrates

    Xue Fei et al.
    Cryo-EM structures of the AAA+ ClpXP protease bound to an ssrA degron reveal the mechanism of substrate recognition and show how the machine transitions from recognition to translocation and unfolding.
    1. Structural Biology and Molecular Biophysics

    A complex IRES at the 5'-UTR of a viral mRNA assembles a functional 48S complex via an uAUG intermediate

    Ritam Neupane et al.
    The ribosome bound structure of a new IRES reveals novel architecture features used by viruses to hijack cellular translation.
    1. Biochemistry and Chemical Biology

    HOPS recognizes each SNARE, assembling ternary trans-complexes for rapid fusion upon engagement with the 4th SNARE

    Hongki Song et al.
    The tethering complex HOPS employs affinity for each of the 4 SNAREs to catalyze assembly of 3-SNARE intermediates, supporting an immediate burst of membrane fusion triggered by the 4th SNARE.
    1. Computational and Systems Biology
    2. Ecology

    Expanding xylose metabolism in yeast for plant cell wall conversion to biofuels

    Xin Li et al.
    Parallel pathways of xylose metabolism identified in fungi that grow on plants can be used in yeast to promote hemicellulose conversion to biofuels.
  1. Nuclear pore assembly proceeds by an inside-out extrusion of the nuclear envelope

    Shotaro Otsuka et al.
    Nuclear pores assemble asymmetrically, by an inside-out evagination of the inner nuclear membrane that grows in diameter and depth until it fuses with the flat outer nuclear membrane.
    1. Structural Biology and Molecular Biophysics

    Structure of a low-population intermediate state in the release of an enzyme product

    Alfonso De Simone et al.
    Product release from human lysozyme is mediated by an intermediate state with transient weak interactions between the product and enzyme.
    1. Developmental Biology
    2. Chromosomes and Gene Expression

    The Brm-HDAC3-Erm repressor complex suppresses dedifferentiation in Drosophila type II neuroblast lineages

    Chwee Tat Koe et al.
    A novel complex composed of various components of a chromatin remodeling complex, a chromatin remodeling factor and a transcription factor suppresses the dedifferentiation of intermediate neural progenitors back into neuroblasts in Drosophila.
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    Structure of a Holliday junction complex reveals mechanisms governing a highly regulated DNA transaction

    Gurunathan Laxmikanthan et al.
    The structure of a multi-protein DNA recombination reaction intermediate reveals how regulation is achieved by protein-mediated DNA wrapping around a core enzyme-substrate complex.

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