11 results found
    1. Physics of Living Systems
    2. Computational and Systems Biology

    Many-molecule encapsulation by an icosahedral shell

    Jason D Perlmutter, Farzaneh Mohajerani, Michael F Hagan
    Computational and theoretical models reveal mechanisms by which protein compartments assemble around enzymes and reagents to facilitate reactions in bacteria, allowing the identification of strategies for reengineering such compartments as customizable nanoreactors.
    1. Biochemistry and Chemical Biology
    2. Plant Biology

    Effects of microcompartmentation on flux distribution and metabolic pools in Chlamydomonas reinhardtii chloroplasts

    Anika Küken, Frederik Sommer ... Tabea Mettler-Altmann
    Mathematical models reveal that under the physiologically different conditions ambient and high CO2, two algal microcompartments are metabolically connected by facilitated transport.
    1. Microbiology and Infectious Disease

    A nanocompartment system contributes to defense against oxidative stress in Mycobacterium tuberculosis

    Katie A Lien, Kayla Dinshaw ... Sarah A Stanley
    A peroxidase-containing nanocompartment in the bacterial pathogen Mycobacterium tuberculosis protects against oxidative stress and antibiotic treatment in the host.
    1. Microbiology and Infectious Disease
    2. Structural Biology and Molecular Biophysics

    Discovery and characterization of a novel family of prokaryotic nanocompartments involved in sulfur metabolism

    Robert J Nichols, Benjamin LaFrance ... David F Savage
    A protein-bounded organelle-like compartment from Synechococcus elongatus PCC 7942 is upregulated under sulfur starvation and contains a cysteine desulfurase cargo enzyme.
    1. Cell Biology

    Reconstitution of self-organizing protein gradients as spatial cues in cell-free systems

    Katja Zieske, Petra Schwille
    A minimal cell-like system with defined geometry has been used to investigate the establishment and spatial control of a protein gradient that positions the bacterial cell division machinery.
    1. Microbiology and Infectious Disease
    2. Physics of Living Systems

    Protein gradients on the nucleoid position the carbon-fixing organelles of cyanobacteria

    Joshua S MacCready, Pusparanee Hakim ... Daniel C Ducat
    Carboxysomes, the carbon-fixation machinery of cyanobacteria, are equidistantly-positioned by dynamic gradients of the protein McdA on the nucleoid that emerge through interaction with a previously unidentified carboxysome factor, McdB.
    1. Genetics and Genomics

    Differing isoforms of the cobalamin binding photoreceptor AerR oppositely regulate photosystem expression

    Haruki Yamamoto, Mingxu Fang ... Carl E Bauer
    A novel B12 containing photoreceptor is synthesized as two different isoforms that interact with the same transcription factor, with one isoform directing activation and the other promoting repression of photosystem synthesis.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Dissecting the phase separation and oligomerization activities of the carboxysome positioning protein McdB

    Joseph L Basalla, Claudia A Mak ... Anthony G Vecchiarelli
    Carbon-fixing organelles, called carboxysomes, link to their spatial organization system in the bacterial cell by a hexameric protein that forms pH-dependent condensates via a nuanced multidomain mechanism.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Filament formation by metabolic enzymes is a specific adaptation to an advanced state of cellular starvation

    Ivana Petrovska, Elisabeth Nüske ... Simon Alberti
    A starvation-induced drop in cytosolic pH promotes assembly of budding yeast glutamine synthetase into enzymatically inactive filaments that function as enzyme storage depots.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Evidence for a DNA-relay mechanism in ParABS-mediated chromosome segregation

    Hoong Chuin Lim, Ivan Vladimirovich Surovtsev ... Christine Jacobs-Wagner
    In vitro, in vivo and in silico evidence suggests that bacteria exploit intrinsic chromosomal fluctuations to achieve intracellular transport.

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