Molecular modeling of nearly full-length ErbB2 receptor.
Members of the epidermal growth factor receptor family play important roles in various cellular processes, both in physiological and in pathological conditions. Dimerization and autophosphorylation of these receptor tyrosine kinases are key events of signal transduction. Details of the molecular events of the signaling are not entirely known. To facilitate the understanding of receptor structure and function at the molecular level, a molecular model was built for the nearly full-length ErbB2 dimer. Modeling was based on the x-ray or nuclear-magnetic resonance structures of extracellular, transmembrane, and intracellular domains. The extracellular domain was positioned above the cell membrane based on the distance determined from experimentally measured fluorescence resonance energy transfer. Favorable dimerization interactions are predicted for the extracellular, transmembrane, and protein kinase domains in the model of a nearly full-length dimer of ErbB2, which may act in a coordinated fashion in ErbB2 homodimerization, and also in heterodimers of ErbB2 with other members of the ErbB family.
Bagossi
Péter
P
Department of Biochemistry, Research Center for Molecular Medicine, Medical and Health Science Center, University of Debrecen, Hungary. peter@indi.biochem.dote.hu
Horváth
Gábor
G
Vereb
György
G
Szöllösi
János
J
Tözsér
József
J
D045744:Cell Line, Tumor; D003198:Computer Simulation; D019281:Dimerization; D031541:Fluorescence Resonance Energy Transfer / Q000379:methods*; D006801:Humans; D008051:Lipid Bilayers / Q000737:chemistry*; D008956:Models, Chemical; D008958:Models, Molecular; D009369:Neoplasms / Q000737:chemistry / Q000648:ultrastructure; D011487:Protein Conformation; D017434:Protein Structure, Tertiary; D018719:Erb-b2 Receptor Tyrosine Kinases / Q000032:analysis / Q000737:chemistry* / Q000648:ultrastructure*; D013329:Structure-Activity Relationship
D008051:Lipid Bilayers; D018719:Erb-b2 Receptor Tyrosine Kinases