PDBe 1t21

X-ray diffraction
2.19Å resolution

Structural basis for degenerate recognition of HIV peptide variants by cytotoxic lymphocyte, variant SL9, monoclinic crystal

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: 275 amino acids
Theoretical weight: 31.85 KDa
Source organism: Homo sapiens
Expression system: Drosophila melanogaster
UniProt:
  • Canonical: P01892 (Residues: 25-299; Coverage: 81%)
Gene names: HLA-A, HLAA
Sequence domains:
Structure domains:
Beta-2-microglobulin Chain: B
Molecule details ›
Chain: B
Length: 99 amino acids
Theoretical weight: 11.75 KDa
Source organism: Homo sapiens
Expression system: Drosophila melanogaster
UniProt:
  • Canonical: P61769 (Residues: 21-119; Coverage: 100%)
Gene names: B2M, CDABP0092, HDCMA22P
Sequence domains: Immunoglobulin C1-set domain
Structure domains: Immunoglobulins
GAG PEPTIDE Chain: C
Molecule details ›
Chain: C
Length: 9 amino acids
Theoretical weight: 981 Da

Ligands and Environments

No bound ligands

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS BEAMLINE X4A
Spacegroup: P21
Unit cell:
a: 55.82Å b: 79.59Å c: 57.7Å
α: 90° β: 116.47° γ: 90°
R-values:
R R work R free
0.177 0.177 0.238
Expression system: Drosophila melanogaster