1X7Q

Crystal structure of HLA-A*1101 with sars nucleocapsid peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.181 
  • R-Value Work: 0.133 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

High-resolution structure of HLA-A*1101 in complex with SARS nucleocapsid peptide.

Blicher, T.Kastrup, J.S.Buus, S.Gajhede, M.

(2005) Acta Crystallogr.,Sect.D 61: 1031-1040

  • DOI: 10.1107/S0907444905013090

  • PubMed Abstract: 
  • The structure of the human MHC-I molecule HLA-A*1101 in complex with a nonameric peptide (KTFPPTEPK) has been determined by X-ray crystallography to 1.45 A resolution. The peptide is derived from the SARS-CoV nucleocapsid protein positions 362-370 (S ...

    The structure of the human MHC-I molecule HLA-A*1101 in complex with a nonameric peptide (KTFPPTEPK) has been determined by X-ray crystallography to 1.45 A resolution. The peptide is derived from the SARS-CoV nucleocapsid protein positions 362-370 (SNP362-370). It is conserved in all known isolates of SARS-CoV and has been verified by in vitro peptide-binding studies to be a good to intermediate binder to HLA-A*0301 and HLA-A*1101, with IC50 values of 70 and 186 nM, respectively [Sylvester-Hvid et al. (2004), Tissue Antigens, 63, 395-400]. In terms of the residues lining the peptide-binding groove, the HLA-A*1101-SNP362-370 complex is very similar to other known structures of HLA-A*1101 and HLA-A*6801. The SNP362-370 peptide is held in place by 17 hydrogen bonds to the alpha-chain residues and by nine water molecules which are also tightly bound in the peptide-binding groove. Thr6 of the peptide (Thr6p) does not make efficient use of the middle (E) pocket. For vaccine development, there seems to be a potential for optimization targeted at this position. All residues except Thr2p and Lys9p are accessible for T-cell recognition.


    Organizational Affiliation

    Biostructural Research, Department of Medicinal Chemistry, The Danish University of Pharmaceutical Sciences, Universitetsparken 2, DK-2100 Copenhagen, Denmark.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HLA class I histocompatibility antigen, A-11 alpha chain
A
275Homo sapiensMutation(s): 0 
Gene Names: HLA-A (HLAA)
Find proteins for P13746 (Homo sapiens)
Go to Gene View: HLA-A
Go to UniProtKB:  P13746
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Beta-2-microglobulin
B
99Homo sapiensMutation(s): 0 
Gene Names: B2M
Find proteins for P61769 (Homo sapiens)
Go to Gene View: B2M
Go to UniProtKB:  P61769
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
SARS NUCLEOCAPSID PEPTIDE
C
9Human SARS coronavirusMutation(s): 0 
Gene Names: N
Find proteins for P59595 (Human SARS coronavirus)
Go to UniProtKB:  P59595
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

Download SDF File 
Download CCD File 
A, B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.181 
  • R-Value Work: 0.133 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 58.465α = 90.00
b = 80.623β = 116.79
c = 56.570γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
SHELXL-97refinement
AMoREphasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-08-02
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance