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Crystal structure of mouse coronavirus receptor-binding domain complexed with its murine receptor

X-ray diffraction
3.1Å resolution
PDB entry 3r4d coloured by chain, front view.
PDB entry 3r4d coloured by chain, side view.
PDB entry 3r4d coloured by chain, top view.
Source organisms:
Assembly composition:
hetero dimer (preferred)
Entry contents: 2 distinct polypeptide molecules

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Spike glycoprotein and Carcinoembryonic antigen-related cell adhesion molecule 1
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Multimeric state: hetero dimer
Accessible surface area: 21949.03 Å2
Buried surface area: 2913.25 Å2
Dissociation area: 787.2 Å2
Dissociation energy (ΔGdiss): -2.59 kcal/mol
Dissociation entropy (TΔSdiss): 12.37 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-152099
Assembly 2
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Assembly Name: Spike glycoprotein and Carcinoembryonic antigen-related cell adhesion molecule 1
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Multimeric state: hetero dimer
Accessible surface area: 22003.49 Å2
Buried surface area: 2880.1 Å2
Dissociation area: 799.54 Å2
Dissociation energy (ΔGdiss): -3.15 kcal/mol
Dissociation entropy (TΔSdiss): 12.37 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-152099

Macromolecules

Carcinoembryonic antigen-related cell adhesion molecule 1
Chains: A, C
Length: 208 amino acids
Theoretical weight: 23.68 KDa
Source organism: Mus musculus
Expression system: Spodoptera frugiperda
UniProt:
  • Canonical: P31809 (Residues: 35-416; Coverage: 42%)
  • Best match: P31809-3 (Residues: 35-236)
Gene names: Bgp, Bgp1, Ceacam1
Pfam:
InterPro:
CATH: Immunoglobulins
Carcinoembryonic antigen-related cell adhesion molecule 1 in PDB entry 3r4d, assembly 1, front view.
Carcinoembryonic antigen-related cell adhesion molecule 1 in PDB entry 3r4d, assembly 1, side view.
Carcinoembryonic antigen-related cell adhesion molecule 1 in PDB entry 3r4d, assembly 1, top view.
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Spike glycoprotein
Chains: B, D
Length: 288 amino acids
Theoretical weight: 32.29 KDa
Source organism: Murine coronavirus
Expression system: Spodoptera frugiperda
UniProt:
  • Canonical: Q9J3E7 (Residues: 15-296; Coverage: 21%)
Gene names: ORF3, S
Pfam: Betacoronavirus-like spike glycoprotein S1, N-terminal
InterPro:
CATH: Spike glycoprotein, N-terminal domain
Spike glycoprotein in PDB entry 3r4d, assembly 1, front view.
Spike glycoprotein in PDB entry 3r4d, assembly 1, side view.
Spike glycoprotein in PDB entry 3r4d, assembly 1, top view.
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