2L9U

Spatial structure of dimeric ErbB3 transmembrane domain


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Spatial structure and dimer--monomer equilibrium of the ErbB3 transmembrane domain in DPC micelles.

Mineev, K.S.Khabibullina, N.F.Lyukmanova, E.N.Dolgikh, D.A.Kirpichnikov, M.P.Arseniev, A.S.

(2011) Biochim. Biophys. Acta 1808: 2081-2088

  • DOI: 10.1016/j.bbamem.2011.04.017

  • PubMed Abstract: 
  • In present work the interaction of two TM α-helices of the ErbB3 receptor tyrosine kinase from the ErbB or HER family (residues 639-670) was studied by means of NMR spectroscopy in a membrane-mimicking environment provided by the DPC micelles. The Er ...

    In present work the interaction of two TM α-helices of the ErbB3 receptor tyrosine kinase from the ErbB or HER family (residues 639-670) was studied by means of NMR spectroscopy in a membrane-mimicking environment provided by the DPC micelles. The ErbB3 TM segment appeared to form a parallel symmetric dimer in a left-handed orientation. The interaction between TM spans is accomplished via the non-standard motif and is supported by apolar contacts of bulky side chains and by stacking of aromatic rings together with π-cation interactions of Phe and Arg side chains. The investigation of the dimer--monomer equilibrium revealed thermodynamic properties of the assembly and the presence of two distinct regimes of the dimerization at low and at high peptide/detergent ratio. It was found that the detergent in case of ErbB3 behaves not as an ideal solvent, thus affecting the dimer--monomer equilibrium. Such behavior may account for the problems occurring with the refolding and stability of multispan helical membrane proteins in detergent solutions. The example of ErbB3 allows us to conclude that the thermodynamic parameters of dimerization, measured in micelles for two different helical pairs, cannot be compared without the investigation of their dependence on detergent concentration.


    Organizational Affiliation

    Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences RAS, str. Miklukho-Maklaya 16/10, Moscow, 117997 Russian Federation. mineev@nmr.ru




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Receptor tyrosine-protein kinase erbB-3
A, B
40Homo sapiensMutation(s): 1 
Gene Names: ERBB3 (HER3)
EC: 2.7.10.1
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Epidermal Growth Factor Receptors (EGFRs)
Protein: 
ErbB3 transmembrane segment dimer
Find proteins for P21860 (Homo sapiens)
Go to Gene View: ERBB3
Go to UniProtKB:  P21860
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 
  • Olderado: 2L9U Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-05-18
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-09-06
    Type: Database references