PDBe 2p5e

X-ray diffraction
1.89Å resolution

Crystal Structures of High Affinity Human T-Cell Receptors Bound to pMHC Reveal Native Diagonal Binding Geometry

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero pentamer (preferred)
Entry contents:
5 distinct polypeptide molecules
Macromolecules (5 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
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: 11.85 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21
UniProt:
  • Canonical: P61769 (Residues: 21-119; Coverage: 100%)
Gene names: B2M, CDABP0092, HDCMA22P
Sequence domains: Immunoglobulin C1-set domain
Structure domains: Immunoglobulins
Cancer/testis antigen 1 Chain: C
Molecule details ›
Chain: C
Length: 9 amino acids
Theoretical weight: 1.09 KDa
Source organism: Homo sapiens
Expression system: Not provided
UniProt:
  • Canonical: P78358 (Residues: 157-165; Coverage: 5%)
Gene names: CTAG, CTAG1, CTAG1A, CTAG1B, ESO1, LAGE2, LAGE2A, LAGE2B
T cell receptor alpha constant Chain: D
Molecule details ›
Chain: D
Length: 195 amino acids
Theoretical weight: 21.41 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21
UniProt:
  • Canonical: P01848 (Residues: 1-79; Coverage: 56%)
Gene names: TCRA, TRAC
Structure domains: Immunoglobulins
Hypothetical protein Chain: E
Molecule details ›
Chain: E
Length: 242 amino acids
Theoretical weight: 27.22 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21
Structure domains: Immunoglobulins

Ligands and Environments


No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SRS BEAMLINE PX14.1
Spacegroup: P21
Unit cell:
a: 74.002Å b: 51.771Å c: 118.27Å
α: 90° β: 98.24° γ: 90°
R-values:
R R work R free
0.181 0.178 0.236
Expression systems:
  • Escherichia coli BL21
  • Not provided