PDBe 3s4s

X-ray diffraction
2.4Å resolution

Crystal structure of CD4 mutant bound to HLA-DR1

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
Entry contents:
4 distinct polypeptide molecules
Macromolecules (4 distinct):
Hemagglutinin HA1 chain Chains: C, F
Molecule details ›
Chains: C, F
Length: 13 amino acids
Theoretical weight: 1.51 KDa
Source organism: Influenza A virus (A/Swine/Netherlands/L2/93(H3N2))
Expression system: Not provided
UniProt:
  • Canonical: P03437 (Residues: 322-334; Coverage: 2%)
Gene name: HA
T-cell surface glycoprotein CD4 Chains: G, H
Molecule details ›
Chains: G, H
Length: 191 amino acids
Theoretical weight: 21.26 KDa
Source organism: Homo sapiens
Expression system: Spodoptera frugiperda
UniProt:
  • Canonical: P01730 (Residues: 26-203; Coverage: 41%)
Gene name: CD4
Sequence domains: Immunoglobulin C2-set domain
Structure domains: Immunoglobulins
HLA class II histocompatibility antigen, DR alpha chain Chains: A, D
Molecule details ›
Chains: A, D
Length: 182 amino acids
Theoretical weight: 21.15 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P01903 (Residues: 26-207; Coverage: 80%)
Gene names: HLA-DRA, HLA-DRA1
Sequence domains:
Structure domains:
HLA class II histocompatibility antigen, DRB1-1 beta chain Chains: B, E
Molecule details ›
Chains: B, E
Length: 193 amino acids
Theoretical weight: 22.46 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
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: NSLS BEAMLINE X29A
Spacegroup: P21
Unit cell:
a: 67.26Å b: 137.29Å c: 88.29Å
α: 90° β: 106.64° γ: 90°
R-values:
R R work R free
0.251 0.251 0.286
Expression systems:
  • Not provided
  • Spodoptera frugiperda
  • Escherichia coli BL21(DE3)