2v2x

X-ray diffraction
1.6Å resolution

T cell cross-reactivity and conformational changes during TCR engagement.

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
PDBe Complex ID:
PDB-CPX-137737 (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: 276 amino acids
Theoretical weight: 31.95 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
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
UniProt:
  • Canonical: P61769 (Residues: 21-119; Coverage: 100%)
Gene names: B2M, CDABP0092, HDCMA22P
Sequence domains: Immunoglobulin C1-set domain
Structure domains: Immunoglobulins
HIV P17 Chains: C, F
Molecule details ›
Chains: C, F
Length: 9 amino acids
Theoretical weight: 965 Da
Source organism: Human immunodeficiency virus
Expression system: Not provided

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SRS BEAMLINE PX14.2
Spacegroup: P1
Unit cell:
a: 50.308Å b: 63.606Å c: 74.744Å
α: 81.83° β: 76.21° γ: 77.73°
R-values:
R R work R free
0.194 0.192 0.238
Expression systems:
  • Escherichia coli
  • Not provided