PDBe 4u6x

X-ray diffraction
1.68Å resolution

Crystal Structure of HLA-A*0201 in complex with ALQDA, a 15 mer self-peptide

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
Entry contents:
3 distinct polypeptide molecules
Macromolecules (3 distinct):
HLA class I histocompatibility antigen, A-2 alpha chain Chain: A
Molecule details ›
Chain: A
Length: 276 amino acids
Theoretical weight: 31.95 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P01892 (Residues: 25-300; Coverage: 81%)
Gene names: HLA-A, HLAA
Sequence domains:
Structure domains:
Beta-2-microglobulin Chain: B
Molecule details ›
Chain: B
Length: 100 amino acids
Theoretical weight: 11.88 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P61769 (Residues: 21-119; Coverage: 100%)
Gene names: B2M, CDABP0092, HDCMA22P
Sequence domains: Immunoglobulin C1-set domain
Structure domains: Immunoglobulins
ALQDA peptide, ALQDAGDSSRKEYFI Chain: P
Molecule details ›
Chain: P
Length: 15 amino acids
Theoretical weight: 1.7 KDa
Source organism: synthetic construct
Expression system: Not provided

Ligands and Environments

3 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: AUSTRALIAN SYNCHROTRON BEAMLINE MX1
Spacegroup: P21
Unit cell:
a: 51.043Å b: 79.063Å c: 54.903Å
α: 90° β: 111.11° γ: 90°
R-values:
R R work R free
0.165 0.163 0.202
Expression systems:
  • Escherichia coli BL21(DE3)
  • Not provided