6a2b

X-ray diffraction
2.8Å resolution

Crystal Structure of Xenopus laevis MHC I complex

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
PDBe Complex ID:
PDB-CPX-166392 (preferred)
Entry contents:
3 distinct polypeptide molecules
Macromolecules (3 distinct):
Ig-like domain-containing protein Chain: A
Molecule details ›
Chain: A
Length: 272 amino acids
Theoretical weight: 31.64 KDa
Source organism: Xenopus laevis
Expression system: Escherichia coli
UniProt:
  • Canonical: Q9TPA7 (Residues: 20-291; Coverage: 81%)
Sequence domains:
Beta-2-microglobulin Chain: B
Molecule details ›
Chain: B
Length: 94 amino acids
Theoretical weight: 10.94 KDa
Source organism: Xenopus laevis
Expression system: Escherichia coli
UniProt:
  • Canonical: Q9IA97 (Residues: 20-113; Coverage: 95%)
Gene name: b2m
Sequence domains: Immunoglobulin C1-set domain
TYR-MET-MET-PRO-ARG-HIS-TRP-PRO-ILE Chain: C
Molecule details ›
Chain: C
Length: 9 amino acids
Theoretical weight: 1.23 KDa
Source organism: Xenopus laevis
Expression system: Escherichia coli

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: RIGAKU
Spacegroup: P212121
Unit cell:
a: 59.139Å b: 68.22Å c: 107.809Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.226 0.2 0.264
Expression system: Escherichia coli