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SHR Neuro Cancer Cardio Lipid Metab Microb

Cisse, A; Schachner-Nedherer, AL; Appel, M; Beck, C; Ollivier, J; Leitinger, G; Prassl, R; Kornmueller, K; Peters, J.
Dynamics of Apolipoprotein B-100 in Interaction with Detergent Probed by Incoherent Neutron Scattering.
J Phys Chem Lett. 2021; 12(51):12402-12410 Doi: 10.1021/acs.jpclett.1c03141
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Leading authors Med Uni Graz
Kornmüller Karin
Co-authors Med Uni Graz
Leitinger Gerd
Prassl Ruth
Schachner-Nedherer Anna-Laurence
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Abstract:
Apolipoprotein B-100 (apo B-100) is the protein moiety of both low- and very-low-density lipoproteins, whose role is crucial to cholesterol and triglyceride transport. Aiming at the molecular dynamics' details of apo B-100, scarcely studied, we performed elastic and quasi-elastic incoherent neutron scattering (EINS, QENS) experiments combining different instruments and time scales. Similar to classical membrane proteins, the solubilization results in remaining detergent, here Nonidet P-40 (NP40). Therefore, we propose a framework for QENS studies of protein-detergent complexes, with the introduction of a combined model, including the experimental apo B-100/NP40 ratio. Relying on the simultaneous analysis of all QENS amplitudes, this approach is sensitive enough to separate both contributions. Its application identified two points: (i) apo B-100 slow dynamics and (ii) the acceleration of NP40 dynamics in the presence of apo B-100. Direct translation of the exposed methodology now makes the investigation of more membrane proteins by neutron spectroscopy achievable.
Find related publications in this database (using NLM MeSH Indexing)
Apolipoprotein B-100 - chemistry
Detergents - chemistry
Humans - administration & dosage
Molecular Dynamics Simulation - administration & dosage
Neutrons - administration & dosage
Scattering, Small Angle - administration & dosage

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