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Lipid Polymorphism of the Subchloroplast-Granum and Stroma Thylakoid Membrane-Particles. I. P-31-NMR Spectroscopy

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F21%3A00124445" target="_blank" >RIV/00216224:14740/21:00124445 - isvavai.cz</a>

  • Result on the web

    <a href="https://www.mdpi.com/2073-4409/10/9/2354" target="_blank" >https://www.mdpi.com/2073-4409/10/9/2354</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.3390/cells10092354" target="_blank" >10.3390/cells10092354</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Lipid Polymorphism of the Subchloroplast-Granum and Stroma Thylakoid Membrane-Particles. I. P-31-NMR Spectroscopy

  • Original language description

    Build-up of the energized state of thylakoid membranes and the synthesis of ATP are warranted by organizing their bulk lipids into a bilayer. However, the major lipid species of these membranes, monogalactosyldiacylglycerol, is a non-bilayer lipid. It has also been documented that fully functional thylakoid membranes, in addition to the bilayer, contain an inverted hexagonal (H-II) phase and two isotropic phases. To shed light on the origin of these non-lamellar phases, we performed P-31-NMR spectroscopy experiments on sub-chloroplast particles of spinach: stacked, granum and unstacked, stroma thylakoid membranes. These membranes exhibited similar lipid polymorphism as the whole thylakoids. Saturation transfer experiments, applying saturating pulses at characteristic frequencies at 5 degrees C, provided evidence for distinct lipid phases-with component spectra very similar to those derived from mathematical deconvolution of the P-31-NMR spectra. Wheat-germ lipase treatment of samples selectively eliminated the phases exhibiting sharp isotropic peaks, suggesting easier accessibility of these lipids compared to the bilayer and the H-II phases. Gradually increasing lipid exchanges were observed between the bilayer and the two isotropic phases upon gradually elevating the temperature from 5 to 35 degrees C, suggesting close connections between these lipid phases. Data concerning the identity and structural and functional roles of different lipid phases will be presented in the accompanying paper.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10601 - Cell biology

Result continuities

  • Project

  • Continuities

Others

  • Publication year

    2021

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Blood Cells, Molecules and Diseases

  • ISSN

    1079-9796

  • e-ISSN

    2073-4409

  • Volume of the periodical

    10

  • Issue of the periodical within the volume

    9

  • Country of publishing house

    CH - SWITZERLAND

  • Number of pages

    16

  • Pages from-to

    2354

  • UT code for WoS article

    000699437700001

  • EID of the result in the Scopus database

    2-s2.0-85115889243