2LAG

Structure of the 44 kDa complex of interferon-alpha2 with the extracellular part of IFNAR2 obtained by 2D-double difference NOESY


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Observation of Intermolecular Interactions in Large Protein Complexes by 2D-Double Difference Nuclear Overhauser Enhancement Spectroscopy: Application to the 44 kDa Interferon-Receptor Complex.

Nudelman, I.Akabayov, S.R.Scherf, T.Anglister, J.

(2011) J.Am.Chem.Soc. 133: 14755-14764

  • DOI: 10.1021/ja205480v

  • PubMed Abstract: 
  • NMR detection of intermolecular interactions between protons in large protein complexes is very challenging because it is difficult to distinguish between weak NOEs from intermolecular interactions and the much larger number of strong intramolecular ...

    NMR detection of intermolecular interactions between protons in large protein complexes is very challenging because it is difficult to distinguish between weak NOEs from intermolecular interactions and the much larger number of strong intramolecular NOEs. This challenging task is exacerbated by the decrease in signal-to-noise ratio in the often used isotope-edited and isotope-filtered experiments as a result of enhanced T(2) relaxation. Here, we calculate a double difference spectrum that shows exclusively intermolecular NOEs and manifests the good signal-to-noise ratio in 2D homonuclear NOESY spectra even for large proteins. The method is straightforward and results in a complete picture of all intermolecular interactions involving non exchangeable protons. Ninety-seven such (1)H-(1)H NOEs were assigned for the 44 KDa interferon-α2/IFNAR2 complex and used for docking these two proteins. The symmetry of the difference spectrum, its superb resolution, and unprecedented signal-to-noise ratio in this large protein/receptor complex suggest that this method is generally applicable to study large biopolymeric complexes.


    Organizational Affiliation

    Department of Structural Biology, Weizmann Institute of Science, Rehovot 76100, Israel.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Interferon alpha/beta receptor 2
B
212Homo sapiensMutation(s): 0 
Gene Names: IFNAR2 (IFNABR, IFNARB)
Find proteins for P48551 (Homo sapiens)
Go to Gene View: IFNAR2
Go to UniProtKB:  P48551
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Interferon alpha-2
A
165Homo sapiensMutation(s): 0 
Gene Names: IFNA2 (IFNA2A, IFNA2B, IFNA2C)
Find proteins for P01563 (Homo sapiens)
Go to Gene View: IFNA2
Go to UniProtKB:  P01563
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 2LAG Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-08-17
    Type: Initial release
  • Version 1.1: 2011-09-21
    Type: Database references
  • Version 1.2: 2011-09-28
    Type: Database references