4wj5

X-ray diffraction
1.65Å resolution

Structure of HLA-A2 in complex with an altered peptide ligands based on Mart-1 variant epitope

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
PDBe Complex ID:
PDB-CPX-137805 (preferred)
Entry contents:
3 distinct polypeptide molecules
Macromolecules (3 distinct):
HLA class I histocompatibility antigen, A 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 BL21(DE3)
UniProt:
  • Canonical: P04439 (Residues: 25-299; Coverage: 81%)
Gene names: HLA-A, HLAA
Sequence domains:
Structure domains:
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 BL21(DE3)
UniProt:
  • Canonical: P61769 (Residues: 21-119; Coverage: 100%)
Gene names: B2M, CDABP0092, HDCMA22P
Sequence domains: Immunoglobulin C1-set domain
Structure domains: Immunoglobulins
Melanoma antigen recognized by T-cells 1 Chains: C, F
Molecule details ›
Chains: C, F
Length: 10 amino acids
Theoretical weight: 985 Da
Source organism: Homo sapiens
Expression system: Not provided
UniProt:
  • Canonical: Q16655 (Residues: 26-35; Coverage: 9%)
Gene names: MART1, MLANA

Ligands and Environments

1 bound ligand:
1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: SLS BEAMLINE X06DA
Spacegroup: P21
Unit cell:
a: 63.18Å b: 87.14Å c: 79.194Å
α: 90° β: 90.15° γ: 90°
R-values:
R R work R free
0.156 0.155 0.179
Expression systems:
  • Escherichia coli BL21(DE3)
  • Not provided