X-ray diffraction
2.8Å resolution

Helicobacter pylori adhesin HopQ type I bound to the N-terminal domain of human CEACAM1


Function and Biology Details

Biochemical function:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Carcinoembryonic antigen-related cell adhesion molecule 1 Chain: D
Molecule details ›
Chain: D
Length: 115 amino acids
Theoretical weight: 12.96 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
  • Canonical: P13688 (Residues: 35-142; Coverage: 22%)
Gene names: BGP, BGP1, CEACAM1
Sequence domains: Immunoglobulin V-set domain
Structure domains: Immunoglobulins
SabA N-terminal extracellular adhesion domain-containing protein Chain: A
Molecule details ›
Chain: A
Length: 411 amino acids
Theoretical weight: 44.22 KDa
Source organism: Helicobacter pylori G27
Expression system: Escherichia coli
  • Canonical: B5Z8H1 (Residues: 43-446; Coverage: 65%)
Gene names: HPG27_1120, hopQ
Sequence domains: SabA N-terminal extracellular adhesion domain

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: DIAMOND BEAMLINE I02
Spacegroup: P3221
Unit cell:
a: 94.43Å b: 94.43Å c: 119.7Å
α: 90° β: 90° γ: 120°
R R work R free
0.205 0.201 0.263
Expression system: Escherichia coli