Isolation, characterization and immunolocalization of a globin-like antigen from Ostertagia ostertagi adults

D. C. de Graaf, P. Berghen, L. Moens, T. M. de Marez, S. Raes, M. L. Blaxter, J. Vercruysse

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Western blot analysis using an anti-globin rabbit serum Rb94 revealed a major band of 17 kDa in extracts of Ostertagia ostertagi adults and 4th-stage larvae. The adult stage globin-like antigen (OoAdGlb) was purified from total worm extracts by liquid chromatography. The protein has an estimated molecular mass of 36 kDa under non-reducing conditions, suggesting a dimeric structure containing 2 non-covalently linked 17 kDa monomers. Tryptic peptides were sequenced and showed strong similarities with the globins of free-living and parasitic nematodes. Immunolocalization revealed the presence of this globin-like antigen in the body wall musculature and/or the cuticle of O. ostertagi adults. An enzyme-linked immunosorbent assay based on the purified OoAdGlb showed no differences in response between calves infected by O. ostertagi and/or Cooperia oncophora and the negative controls.
Original languageEnglish
Pages (from-to)63-69
JournalParasitology
Volume113
Issue number1
DOIs
Publication statusPublished - Jul 1996

Keywords / Materials (for Non-textual outputs)

  • nematode
  • Ostertagia ostertagi
  • haemoglobin

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