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Crystal structure of a Staphylococcus aureus protein (SSL7) in complex with Fc of human IgA1

X-ray diffraction
3.2Å resolution
PDB entry 2qej coloured by chain, front view.
PDB entry 2qej coloured by chain, side view.
PDB entry 2qej coloured by chain, top view.
Source organisms:
Assembly composition:
hetero tetramer (preferred)
Entry contents: 2 distinct polypeptide molecules

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Assemblies

Assembly 1 (preferred)
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Assembly Name: IG-heavy chain
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Multimeric state: hetero tetramer
Accessible surface area: 38407.05 Å2
Buried surface area: 8241.34 Å2
Dissociation area: 3,109.86 Å2
Dissociation energy (ΔGdiss): -0.57 kcal/mol
Dissociation entropy (TΔSdiss): 39.33 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-134966

Macromolecules

Immunoglobulin heavy constant alpha 1
Chains: A, B
Length: 216 amino acids
Theoretical weight: 23.47 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P01876 (Residues: 123-333; Coverage: 53%)
  • Best match: P01876-1 (Residues: 123-336)
Gene name: IGHA1
Pfam:
InterPro:
CATH: Immunoglobulins
SCOP: C1 set domains (antibody constant domain-like)
Immunoglobulin heavy constant alpha 1 in PDB entry 2qej, assembly 1, front view.
Immunoglobulin heavy constant alpha 1 in PDB entry 2qej, assembly 1, side view.
Immunoglobulin heavy constant alpha 1 in PDB entry 2qej, assembly 1, top view.
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SUPERANTIGEN-LIKE MOLECULE 7
Chains: C, D
Length: 201 amino acids
Theoretical weight: 23.05 KDa
Source organism: Staphylococcus aureus
Expression system: Escherichia coli
InterPro:
CATH:
SUPERANTIGEN-LIKE MOLECULE 7 in PDB entry 2qej, assembly 1, front view.
SUPERANTIGEN-LIKE MOLECULE 7 in PDB entry 2qej, assembly 1, side view.
SUPERANTIGEN-LIKE MOLECULE 7 in PDB entry 2qej, assembly 1, top view.
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