› 8trl

X-ray diffraction
2.4Å resolution

T cell recognition of citrullinated alpha-enolase peptide presented by HLA-DR4

Released:
DOI: 10.2210/pdb8trl/pdb
Model geometry
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PDB entry 8trl coloured by chain, front view.
PDB entry 8trl coloured by chain, side view.
PDB entry 8trl coloured by chain, top view.
Source organism: Homo sapiens
Primary publication:
The molecular basis underlying T cell specificity towards citrullinated epitopes presented by HLA-DR4.
Loh TJ, Lim JJ, Jones CM, Dao HT, Tran MT, Baker DG, La Gruta NL, Reid HH, Rossjohn J
Nat Commun 15 6201 (2024)
PMID: 39043656

Function and Biology Details

Reaction catalysed: 
2-phospho-D-glycerate = phosphoenolpyruvate + H(2)O
Biochemical function:
  • not assigned
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
hetero pentamer (preferred)
PDBe Complex ID:
PDB-CPX-272077 (preferred)
Entry contents:
5 distinct polypeptide molecules
Macromolecules (7 distinct):
HLA class II histocompatibility antigen, DR alpha chain Chains: A, D
Molecule details ›
Chains: A, D
Length: 181 amino acids
Theoretical weight: 21.08 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P01903 (Residues: 26-206; Coverage: 79%)
Gene names: HLA-DRA, HLA-DRA1
Sequence domains:
HLA class II histocompatibility antigen, DRB1 beta chain Chains: B, E
Molecule details ›
Chains: B, E
Length: 190 amino acids
Theoretical weight: 22.28 KDa
Source organism: Homo sapiens
Expression system: Homo sapiens
UniProt:
  • Canonical: P01911 (Residues: 30-219; Coverage: 80%)
Gene name: HLA-DRB1
Sequence domains:
Alpha-enolase Chains: C, F
RA2.7 TCR alpha chain Chains: G, I
RA2.7 TCR beta chain Chains: H, J

Ligands and Environments

Carbohydrate polymer : NEW Components: NAG
Carbohydrate polymer
Carbohydrate polymer : NEW Components: NAG, BMA, MAN
Carbohydrate polymer
4 bound ligands:
Ligand NAG 4 x NAG
Ligand ACT 3 x ACT
Ligand FMT 4 x FMT
Ligand GOL 11 x GOL
1 modified residue:
Ligand CIR 2 x CIR

Experiments and Validation Details

wwPDB Validation report is not available for this entry.
X-ray source: AUSTRALIAN SYNCHROTRON BEAMLINE MX2
Spacegroup: C2
Unit cell:
a: 185.857Å b: 58.546Å c: 216.479Å
α: 90° β: 113.6° γ: 90°
R-values:
R R work R free
0.211 0.21 0.234
Expression systems:
  • Homo sapiens
  • Not provided
  • Escherichia coli BL21(DE3)

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