PDBe 1qr1

X-ray diffraction
2.4Å resolution

POOR BINDING OF A HER-2/NEU EPITOPE (GP2) TO HLA-A2.1 IS DUE TO A LACK OF INTERACTIONS IN THE CENTER OF THE PEPTIDE

Released:

Function and Biology Details

Biochemical function:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
Entry contents:
3 distinct polypeptide molecules
Macromolecules (3 distinct):
Receptor tyrosine-protein kinase erbB-2 Chains: C, F
Molecule details ›
Chains: C, F
Length: 9 amino acids
Theoretical weight: 884 Da
Source organism: Homo sapiens
Expression system: Not provided
UniProt:
  • Best match: P04626 (Residues: 654-662)
Gene names: ERBB2, HER2, MLN19, NEU, NGL
Beta-2-microglobulin Chains: B, E
Molecule details ›
Chains: B, E
Length: 100 amino acids
Theoretical weight: 11.88 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Best match: P61769 (Residues: 20-119)
Gene names: B2M, CDABP0092, HDCMA22P
HLA class I histocompatibility antigen, A-2 alpha chain Chains: A, D
Molecule details ›
Chains: A, D
Length: 275 amino acids
Theoretical weight: 31.85 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Best match: P01892 (Residues: 25-299)
Gene names: HLA-A, HLAA

Ligands and Environments

No bound ligands

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS BEAMLINE X12B
Spacegroup: P1
Unit cell:
a: 50.337Å b: 63.609Å c: 75.135Å
α: 81.88° β: 76.25° γ: 77.83°
R-values:
R R work R free
0.284 0.242 0.284
Expression systems:
  • Not provided
  • Escherichia coli