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Crystal Structure of the Complex of the MHC Class II Molecule HLA-DR1 (HA peptide 306-318) with the Superantigen SEC3 Variant 3B1

X-ray diffraction
2.6Å resolution
PDB entry 1jws coloured by chain, front view.
PDB entry 1jws coloured by chain, side view.
PDB entry 1jws coloured by chain, top view.
Source organisms:
Assembly composition:
hetero tetramer (preferred)
Entry contents: 4 distinct polypeptide molecules

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Assemblies

Assembly 1 (preferred)
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Multimeric state: hetero tetramer
Accessible surface area: 28005.93 Å2
Buried surface area: 8856.05 Å2
Dissociation area: 694.75 Å2
Dissociation energy (ΔGdiss): -2.85 kcal/mol
Dissociation entropy (TΔSdiss): 13.03 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-135330

Macromolecules

HLA class II histocompatibility antigen, DR alpha chain
Chain: A
Length: 182 amino acids
Theoretical weight: 21.16 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P01903 (Residues: 26-207; Coverage: 80%)
Gene names: HLA-DRA, HLA-DRA1
Pfam:
InterPro:
CATH:
SCOP:
HLA class II histocompatibility antigen, DR alpha chain in PDB entry 1jws, assembly 1, front view.
HLA class II histocompatibility antigen, DR alpha chain in PDB entry 1jws, assembly 1, side view.
HLA class II histocompatibility antigen, DR alpha chain in PDB entry 1jws, assembly 1, top view.
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HLA class II histocompatibility antigen, DRB1 beta chain
Chain: B
Length: 190 amino acids
Theoretical weight: 22.08 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P01911 (Residues: 30-219; Coverage: 80%)
Gene name: HLA-DRB1
Pfam:
InterPro:
CATH:
SCOP:
HLA class II histocompatibility antigen, DRB1 beta chain in PDB entry 1jws, assembly 1, front view.
HLA class II histocompatibility antigen, DRB1 beta chain in PDB entry 1jws, assembly 1, side view.
HLA class II histocompatibility antigen, DRB1 beta chain in PDB entry 1jws, assembly 1, top view.
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HA peptide
Chain: C
Length: 13 amino acids
Theoretical weight: 1.51 KDa
HA peptide in PDB entry 1jws, assembly 1, front view.
HA peptide in PDB entry 1jws, assembly 1, side view.
HA peptide in PDB entry 1jws, assembly 1, top view.
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Enterotoxin type C-3
Chain: D
Length: 239 amino acids
Theoretical weight: 27.66 KDa
Source organism: Staphylococcus aureus
Expression system: Escherichia coli
UniProt:
  • Canonical: P0A0L5 (Residues: 28-266; Coverage: 100%)
Gene name: entC3
Pfam:
InterPro:
CATH:
SCOP:
Enterotoxin type C-3 in PDB entry 1jws, assembly 1, front view.
Enterotoxin type C-3 in PDB entry 1jws, assembly 1, side view.
Enterotoxin type C-3 in PDB entry 1jws, assembly 1, top view.
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