The Structure Of The Cd3 Zeta Zeta Transmembrane Dimer In Popc And Raft-Like Lipid Bilayer: A Molecular Dynamics Study(611 views) Petruk AA, Varriale S, Coscia MR, Mazzarella L, Merlino A, Oreste U
Keywords: Cd3 ζζ, Lipid Raft, Membrane Protein, Molecular Dynamics Popc, Transmembrane Helix, Cd3 Antigen, Cd3 Antigen Zeta Zeta, T Lymphocyte Receptor, Unclassified Drug, Amino Acid Sequence, Amino Terminal Sequence, Article, Binding Affinity, Carboxy Terminal Sequence, Controlled Study, Cytoplasm, Disulfide Bond, Hydrophobicity, Lipid Bilayer, Nuclear Magnetic Resonance, Oxygenation, Priority Journal, Protein Analysis, Protein Binding, Protein Conformation, Protein Domain, Protein Protein Interaction, Protein Secondary Structure, Protein Stability, Protein Structure, Sequence Alignment, Signal Transduction, Cell Receptor, Chol, Cholesterol, Palmitoyl-Oleoyl-Phosphatidylcholine, Radial Distribution Function, Root Mean Square Deviation, Sphingomyelin, Tcrt, 2-Dipalmitoylphosphatidylcholine, Dimerization, Membrane Microdomains, Models, Molecular Dynamics Simulation, Molecular Sequence Data, Sequence Homology,
Affiliations: *** IBB - CNR ***
Instituto Superior de Investigaciones Biológicas (INSIBIO-CONICET), Chacabuco 461, S. M. de Tucumán, Tucumán T4000ILI, Argentina
Department of Chemical Sciences, University of Naples federico II, via Cintia, 80126 Napoli, Italy
Institute of Protein Biochemistry, CNR, via P. Castellino 111, 80131 Napoli, Italy
Institute of Biostructures and Bioimages, CNR, via Mezzocannone 16, 80100 Napoli, Italy
References: Not available.
The Structure Of The Cd3 Zeta Zeta Transmembrane Dimer In Popc And Raft-Like Lipid Bilayer: A Molecular Dynamics Study
Plasma membrane lipids significantly affect assembly and activity of many signaling networks. The present work is aimed at analyzing, by molecular dynamics simulations, the structure and dynamics of the CD3 zeta zeta dimer in palmitoyl-oleoyl-phosphatidylcholine bilayer (POPC) and in POPC/cholesterol/sphingomyelin bilayer, which resembles the raft membrane microdomain supposed to be the site of the signal transducing machinery. Both POPC and raft-like environment produce significant alterations in structure and flexibility of the CD3 zeta zeta with respect to nuclear magnetic resonance (NMR) model: the dimer is more compact, its secondary structure is slightly less ordered, the arrangement-of the Asp6 pair, which is important for binding to the Arg residue in the alpha chain of the T cell receptor (TCR), is stabilized by water molecules. Different interactions of charged residues with lipids at the lipid-cytoplasm boundary occur when the two environments are compared. Furthermore, in contrast to what is observed in POPC, in the raft-like environment correlated motions between transmembrane and cytoplasmic regions are observed. Altogether the data suggest that when the TCR complex resides in the raft domains, the CD3 zeta zeta dimer assumes a specific conformation probably necessary to the correct signal transduction. (C) 2013 Elsevier B. V. All rights reserved
The Structure Of The Cd3 Zeta Zeta Transmembrane Dimer In Popc And Raft-Like Lipid Bilayer: A Molecular Dynamics Study
Kim YH, Shin SW, Pellicano R, Fagoonee S, Choi IJ, Kim YI, Park B, Choi JM, Kim SG, Choi J, Park JY, Oh S, Yang HJ, Lim JH, Im JP, Kim JS, Jung HC, Ponzetto A, Figura N, Malfertheiner P, Choi IJ, Kook MC, Kim YI, Cho SJ, Lee JY, Kim CG, Park B, Nam BH, Bae SE, Choi KD, Choe J, Kim SO, Na HK, Choi JY, Ahn JY, Jung KW, Lee J, Kim DH, Chang HS, Song HJ, Lee GH, Jung HY, Seta T, Takahashi Y, Noguchi Y, Shikata S, Sakai T, Sakai K, Yamashita Y, Nakayama T, Leja M, Park JY, Murillo R, Liepniece-karele I, Isajevs S, Kikuste I, Rudzite D, Krike P, Parshutin S, Polaka I, Kirsners A, Santare D, Folkmanis V, Daugule I, Plummer M, Herrero R, Tsukamoto T, Nakagawa M, Kiriyama Y, Toyoda T, Cao X, Corral JE, Mera R, Dye CW, Morgan DR, Lee YC, Lin JT, Garcia Martin R, Matia Cubillo A, Lee SH, Park JM, Han YM, Ko WJ, Hahm KB, Leontiadis GI, Ford AC, Ichinose M, Sugano K, Jeong M, Park JM, Han YM, Park KY, Lee DH, Yoo JH, Cho JY, Hahm KB, Bang CS, Baik GH, Shin IS, Kim JB, Suk KT, Yoon JH, Kim YS, Kim DJ * Helicobacter pylori Eradication for Prevention of Metachronous Recurrence after Endoscopic Resection of Early Gastric Cancer(548 views) N Engl J Med (ISSN: 0028-4793, 0028-4793linking, 1533-4406electronic), 2015 Jun; 30642104201566393291: 749-756. Impact Factor:59.558 ViewExport to BibTeXExport to EndNote