Lipid Dynamics in Diisobutylene-Maleic Acid (DIBMA) Lipid Particles in Presence of Sensory Rhodopsin II
Bitte benutzen Sie diese Kennung, um auf die Ressource zu verweisen:
https://osnadocs.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-202106105043
https://osnadocs.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-202106105043
Titel: | Lipid Dynamics in Diisobutylene-Maleic Acid (DIBMA) Lipid Particles in Presence of Sensory Rhodopsin II |
Autor(en): | Voskoboynikova, Natalia Orekhov, Philipp Bozdaganyan, Marine Kodde, Felix Rademacher, Malte Schowe, Maurice Budke-Gieseking, Annette Brickwedde, Britta Psathaki, Olympia-Ekaterini Mulkidjanian, Armen Y. Cosentino, Katia Shaitan, Konstantin V. Steinhoff, Heinz-Jürgen |
ORCID des Autors: | https://orcid.org/0000-0002-5137-303X https://orcid.org/0000-0002-5888-0157 https://orcid.org/0000-0003-2317-0144 https://orcid.org/0000-0003-4078-4762 |
Zusammenfassung: | Amphiphilic diisobutylene/maleic acid (DIBMA) copolymers extract lipid-encased membrane proteins from lipid bilayers in a detergent-free manner, yielding nanosized, discoidal DIBMA lipid particles (DIBMALPs). Depending on the DIBMA/lipid ratio, the size of DIBMALPs can be broadly varied which makes them suitable for the incorporation of proteins of different sizes. Here, we examine the influence of the DIBMALP sizes and the presence of protein on the dynamics of encased lipids. As shown by a set of biophysical methods, the stability of DIBMALPs remains unaffected at different DIBMA/lipid ratios. Coarse-grained molecular dynamics simulations confirm the formation of viable DIBMALPs with an overall size of up to 35 nm. Electron paramagnetic resonance spectroscopy of nitroxides located at the 5th, 12th or 16th carbon atom positions in phosphatidylcholine-based spin labels reveals that the dynamics of enclosed lipids are not altered by the DIBMALP size. The presence of the membrane protein sensory rhodopsin II from Natronomonas pharaonis (NpSRII) results in a slight increase in the lipid dynamics compared to empty DIBMALPs. The light-induced photocycle shows full functionality of DIBMALPs-embedded NpSRII and a significant effect of the protein-to-lipid ratio during preparation on the NpSRII dynamics. This study indicates a possible expansion of the applicability of the DIBMALP technology on studies of membrane protein–protein interaction and oligomerization in a constraining environment. |
Bibliografische Angaben: | Voskoboynikova N, Orekhov P, Bozdaganyan M, Kodde F, Rademacher M, Schowe M, Budke-Gieseking A, Brickwedde B, Psathaki O-E, Mulkidjanian AY, Cosentino K, Shaitan KV, Steinhoff H-J.: Lipid Dynamics in Diisobutylene-Maleic Acid (DIBMA) Lipid Particles in Presence of Sensory Rhodopsin II. International Journal of Molecular Sciences. 2021; 22(5):2548. |
URL: | https://osnadocs.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-202106105043 |
Schlagworte: | nitroxide spin label; electron paramagnetic resonance spectroscopy (EPR; ESR); polymer/lipid nanodiscs; phospholipid bilayer; membrane protein; negative-stain and cryo-transmission electron microscopy (EM); coarse-grained (CG); molecular dynamics (MD) |
Erscheinungsdatum: | 4-Mär-2021 |
Lizenzbezeichnung: | Attribution 4.0 International |
URL der Lizenz: | http://creativecommons.org/licenses/by/4.0/ |
Publikationstyp: | Einzelbeitrag in einer wissenschaftlichen Zeitschrift [article] |
Enthalten in den Sammlungen: | FB06 - Hochschulschriften Open-Access-Publikationsfonds |
Dateien zu dieser Ressource:
Datei | Beschreibung | Größe | Format | |
---|---|---|---|---|
ijms_Voskoboyniakova_etal_2021.pdf | 6,81 MB | Adobe PDF | ijms_Voskoboyniakova_etal_2021.pdf Öffnen/Anzeigen |
Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons