3,315 results found
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structure and mechanism of a phage-encoded SAM lyase revises catalytic function of enzyme family

    Xiaohu Guo et al.
    The first structure of a bacteriophage-encoded S-adenosyl methionine degrading enzyme was solved and demonstrated to catalyze a unimolecular lyase reaction occurring at the domain interface of a trimeric structure.
    1. Cell Biology

    A bioactive peptide amidating enzyme is required for ciliogenesis

    Dhivya Kumar et al.
    Analysis of Chlamydomonas, planaria and mice reveals a novel and unanticipated role for a peptide amidating enzyme in primary and motile ciliary assembly through effects on post-Golgi trafficking.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    TMEM120A contains a specific coenzyme A-binding site and might not mediate poking- or stretch-induced channel activities in cells

    Yao Rong et al.
    Electrophysiological and structural characterizations reveal that a previously proposed ion channel responsible for sensing mechanical pain is insensitive to poking or stretching stimuli for conducting ions and may serve as a coenzyme A-binding protein instead.
    1. Structural Biology and Molecular Biophysics

    TMEM120A is a coenzyme A-binding membrane protein with structural similarities to ELOVL fatty acid elongase

    Jing Xue et al.
    Cryo-EM structure of human TMEM120A reveals that it is a coenzyme A-binding protein and is unlikely to function as a mechanosensitive channel as was recently proposed.
    1. Biochemistry and Chemical Biology

    A universal pocket in fatty acyl-AMP ligases ensures redirection of fatty acid pool away from coenzyme A-based activation

    Gajanan S Patil et al.
    The structural basis of how an enzyme differentiates chemically identical molecules unlike its homolog to channel fatty acids towards secondary metabolism is elucidated.
    1. Biochemistry and Chemical Biology
    2. Genetics and Genomics

    Evolution of substrate specificity in a retained enzyme driven by gene loss

    Ana Lilia Juárez-Vázquez et al.
    An integrated biochemical and evolutionary analysis shows how enzyme specificity evolves after gene loss during genome decay, implicating relaxation of purifying selection as a driving force for functional divergence.
    1. Structural Biology and Molecular Biophysics

    Mapping the conformational landscape of a dynamic enzyme by multitemperature and XFEL crystallography

    Daniel A Keedy et al.
    The conformations of the enzyme cyclophilin A that are essential for its catalytic activity are temperature dependent and exhibit diverse responses, which is consistent with a complex energy landscape.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Mutations that improve efficiency of a weak-link enzyme are rare compared to adaptive mutations elsewhere in the genome

    Andrew B Morgenthaler et al.
    Mutations elsewhere in the genome play critical roles in improving fitness during amplification and divergence of a gene encoding a weak-link enzyme whose inefficiency limits growth rate.
    1. Microbiology and Infectious Disease

    Discovery and characterization of a prevalent human gut bacterial enzyme sufficient for the inactivation of a family of plant toxins

    Nitzan Koppel et al.
    A unique, widely distributed gut bacterial enzyme selectively metabolizes plant-derived cardiac glycoside drugs.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Structure and mechanism of a Hypr GGDEF enzyme that activates cGAMP signaling to control extracellular metal respiration

    Zachary F Hallberg et al.
    A newfound signaling enzyme that diverged from a protein family ubiquitous in bacteria provides mechanistic insights into how new signaling activity emerges to control distinct cellular function and physiology.

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