PDBe 1fyt

X-ray diffraction
2.6Å resolution

CRYSTAL STRUCTURE OF A COMPLEX OF A HUMAN ALPHA/BETA-T CELL RECEPTOR, INFLUENZA HA ANTIGEN PEPTIDE, AND MHC CLASS II MOLECULE, HLA-DR1

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero pentamer (preferred)
Entry contents:
5 distinct polypeptide molecules
Macromolecules (5 distinct):
T-cell receptor beta-1 chain C region Chain: E
Molecule details ›
Chain: E
Length: 245 amino acids
Theoretical weight: 27.94 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P01850 (Residues: 1-134; Coverage: 76%)
Gene name: TRBC1
Sequence domains: Immunoglobulin C1-set domain
Structure domains: Immunoglobulins
T-cell receptor alpha chain C region Chain: D
Molecule details ›
Chain: D
Length: 212 amino acids
Theoretical weight: 23.41 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P01848 (Residues: 1-99; Coverage: 70%)
Gene names: TCRA, TRAC
Sequence domains: Domain of unknown function (DUF1968)
Structure domains: Immunoglobulins
Hemagglutinin HA1 chain Chain: C
Molecule details ›
Chain: C
Length: 13 amino acids
Theoretical weight: 1.51 KDa
Source organism: H3N2 subtype
Expression system: Escherichia coli
UniProt:
  • Canonical: P03437 (Residues: 322-334; Coverage: 2%)
Gene name: HA
HLA class II histocompatibility antigen, DR alpha chain Chain: A
Molecule details ›
Chain: A
Length: 181 amino acids
Theoretical weight: 21.08 KDa
Source organism: Homo sapiens
Expression system: Drosophila melanogaster
UniProt:
  • Canonical: P01903 (Residues: 26-206; Coverage: 79%)
Gene names: HLA-DRA, HLA-DRA1
Sequence domains:
Structure domains:
HLA class II histocompatibility antigen, DRB1-1 beta chain Chain: B
Molecule details ›
Chain: B
Length: 192 amino acids
Theoretical weight: 22.32 KDa
Source organism: Homo sapiens
Expression system: Drosophila melanogaster
UniProt:
  • Canonical: P04229 (Residues: 30-221; Coverage: 81%)
Gene name: HLA-DRB1
Sequence domains:
Structure domains:

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 14-BM-C
Spacegroup: C2
Unit cell:
a: 142.902Å b: 73.439Å c: 122.428Å
α: 90° β: 108.23° γ: 90°
R-values:
R R work R free
0.221 0.221 0.255
Expression systems:
  • Escherichia coli
  • Drosophila melanogaster