4d9q

X-ray diffraction
2.28Å resolution

Inhibiting Alternative Pathway Complement Activation by Targeting the Exosite on Factor D

Released:

Function and Biology Details

Reaction catalysed:
Selective cleavage of Arg-|-Lys bond in complement factor B when in complex with complement subcomponent C3b or with cobra venom factor.
Biochemical function:
Biological process:
Cellular component:

Structure analysis Details

Assemblies composition:
hetero trimer (preferred)
hetero hexamer
PDBe Complex ID:
PDB-CPX-123654 (preferred)
Entry contents:
3 distinct polypeptide molecules
Macromolecules (3 distinct):
Complement factor D Chains: A, B
Molecule details ›
Chains: A, B
Length: 228 amino acids
Theoretical weight: 24.63 KDa
Source organism: Macaca mulatta
Expression system: Cricetulus griseus
UniProt:
  • Canonical: F6YBP7 (Residues: 33-260; Coverage: 95%)
Gene name: CFD
Sequence domains: Trypsin
Structure domains: Trypsin-like serine proteases
Ig-like domain-containing protein Chains: D, L
Molecule details ›
Chains: D, L
Length: 213 amino acids
Theoretical weight: 23.13 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: Q8TCD0 (Residues: 21-238; Coverage: 97%)
Sequence domains:
Structure domains: Immunoglobulins
Immunoglobulin heavy constant gamma 1 Chains: E, H
Molecule details ›
Chains: E, H
Length: 217 amino acids
Theoretical weight: 23.09 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P01857 (Residues: 1-102; Coverage: 26%)
Gene name: IGHG1
Sequence domains: Immunoglobulin C1-set domain
Structure domains: Immunoglobulins

Ligands and Environments

3 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRL BEAMLINE BL9-2
Spacegroup: C2
Unit cell:
a: 182.33Å b: 80.76Å c: 142.63Å
α: 90° β: 107.19° γ: 90°
R-values:
R R work R free
0.191 0.189 0.23
Expression systems:
  • Cricetulus griseus
  • Escherichia coli