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Molecular modeling and site-directed mutagenesis of plant chloroplast monogalactosyldiacylglycerol synthase reveal critical residues for activity

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14110%2F05%3A00020163" target="_blank" >RIV/00216224:14110/05:00020163 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Molecular modeling and site-directed mutagenesis of plant chloroplast monogalactosyldiacylglycerol synthase reveal critical residues for activity

  • Original language description

    Monogalactosyldiacylglycerol (MGDG), the major lipid of plant and algal plastids, is synthesized by MGD (or MGDG synthase), a dimeric and membrane-bound glycosyltransferase of the plastid envelope that catalyzes the transfer of a galactosyl group from aUDP-galactose donor onto a diacylglycerol acceptor. Although this enzyme is essential for biogenesis, and therefore an interesting target for herbicide design, no structural information is available. MGD monomers share sequence similarity with MURG, a bacterial glycosyltransferase catalyzing the transfer of N-acetyl-glucosamine on Lipid 1. Using the x-ray structure of Escherichia coli MURG as a template, we computed a model for the fold of Spinacia oleracea MGD. This structural prediction was supportedby site-directed mutagenesis analyses. The predicted monomer architecture is a double Rossmann fold. The binding site for UDP-galactose was predicted in the cleft separating the two Rossmann folds. Two short segments of MGD (beta2-alpha2

  • Czech name

    Molekulové modelování a místně cílená mutageneze MDGD synthasy rostlinného chloroplastu odhalují rezidua nezbytná pro její aktivitu

  • Czech description

    Monogalaktosyldiacylglycerol (MGDG), hlavní složka rostlinných plastidů, je syntetizován MGDG synthasou (MGD) - glykosyltransferasou přítomnou v membráně plastidu, která katalyzuje přenos galaktosylové skupiny z UDP-galaktosy (donor) na diacylglycerol (akceptor). Zatím není dostupná žádná strukturní informace o tomto důležitém enzymu, který je vhodným cílem pro design herbicidů. S pomocí metod homologního modelování v této práci představujeme model MGDG synthasy ze špenátu, který byl vytvořen podle analogie s proteinem MURG z Escherichia coli, jehož rentgenová struktura je známa.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CE - Biochemistry

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GD204%2F03%2FH016" target="_blank" >GD204/03/H016: Structural biophysics of macromolecules</a><br>

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2005

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    J. Biol. Chem.

  • ISSN

    0021-9258

  • e-ISSN

  • Volume of the periodical

    280

  • Issue of the periodical within the volume

    41

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    11

  • Pages from-to

    34691-34701

  • UT code for WoS article

  • EID of the result in the Scopus database