Expression, purification and X-ray crystallographic analysis of the Helicobacter pylori blood group antigen-binding adhesin BabA

Suresh Subedi, Kristof Moonens, Ema Estevens Romão, Alvin Lo, Guy Vandenbussche, Jeanna Bugaytsova, Serge Muyldermans, Thomas Borén, Han Remaut

Onderzoeksoutput: Articlepeer review

10 Citaten (Scopus)

Samenvatting

Helicobacter pylori is a human pathogen that colonizes about 50% of the world's population, causing chronic gastritis, duodenal ulcers and even gastric cancer. A steady emergence of multiple antibiotic resistant strains poses an important public health threat and there is an urgent requirement for alternative therapeutics. The blood group antigen-binding adhesin BabA mediates the intimate attachment to the host mucosa and forms a major candidate for novel vaccine and drug development. Here, the recombinant expression and crystallization of a soluble BabA truncation (BabA(25-460)) corresponding to the predicted extracellular adhesin domain of the protein are reported. X-ray diffraction data for nanobody-stabilized BabA(25-460) were collected to 2.25 Å resolution from a crystal that belonged to space group P21, with unit-cell parameters a = 50.96, b = 131.41, c = 123.40 Å, α = 90.0, β = 94.8, γ = 90.0°, and which was predicted to contain two BabA(25-460)-nanobody complexes per asymmetric unit.

Originele taal-2English
Pagina's (van-tot)1631-1635
Aantal pagina's5
TijdschriftActa Crystallographica Section F - Structural Biology Communications
Volume70
Nummer van het tijdschrift12
DOI's
StatusPublished - 1 dec 2014

Keywords

  • Adhesins, Bacterial
  • Base Sequence
  • Blood Group Antigens
  • Crystallography, X-Ray
  • DNA Primers
  • Helicobacter pylori

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