PDBe 3r2x

X-ray diffraction
3.1Å resolution

Crystal structure of the de novo designed binding protein HB36.3 in complex the the 1918 influenza virus hemagglutinin

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero nonamer (preferred)
Entry contents:
3 distinct polypeptide molecules
Macromolecules (3 distinct):
Hemagglutinin HA1 chain Chain: A
Molecule details ›
Chain: A
Length: 331 amino acids
Theoretical weight: 36.45 KDa
Source organism: Influenza A virus (A/Brevig Mission/1/1918(H1N1))
Expression system: Trichoplusia ni
UniProt:
  • Canonical: Q9WFX3 (Residues: 18-344; Coverage: 60%)
Gene name: HA
Structure domains:
Hemagglutinin HA2 chain Chain: B
Molecule details ›
Chain: B
Length: 179 amino acids
Theoretical weight: 20.39 KDa
Source organism: Influenza A virus (A/Brevig Mission/1/1918(H1N1))
Expression system: Trichoplusia ni
UniProt:
  • Canonical: Q9WFX3 (Residues: 345-520; Coverage: 32%)
Gene name: HA
Structure domains: Hemagglutinin Ectodomain; Chain B
HB36.3, designed hemagglutinin binding protein Chain: C
Molecule details ›
Chain: C
Length: 93 amino acids
Theoretical weight: 10.61 KDa
Source organism: synthetic construct
Expression system: Escherichia coli BL21(DE3)
Structure domains: Hypothetical protein - apc36109-like domain

Ligands and Environments

3 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 23-ID-D
Spacegroup: R32
Unit cell:
a: 130.054Å b: 130.054Å c: 313.735Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.224 0.223 0.249
Expression systems:
  • Trichoplusia ni
  • Escherichia coli BL21(DE3)