Predicting the allergenic risk of Phosphite-NAD+-Oxidoreductase and purple acid phosphatase 17 proteins in genetically modified canola using bioinformatic approaches

Food Chem Toxicol. 2023 Dec:182:114094. doi: 10.1016/j.fct.2023.114094. Epub 2023 Nov 2.


Recent advancements in the generation of high-throughput multi-omics data have provided a vast array of candidate genes for the genetic engineering of plants. However, as part of their safety assessment, newly expressed proteins in genetically modified crops must be evaluated for potential cross-reactivity with known allergens. In this study, we developed transgenic canola plants expressing the Arabidopsis thaliana PAP17 gene and a novel selectable marker composed of the ptxD gene from Pseudomonas stutzeri. To evaluate the potential allergenic cross-reactivity of the AtPAP17 and PTXD proteins expressed in transgenic canola, we applied a comprehensive approach utilizing sequence-based, motif-based, and 3D structure-based analyses. Our results demonstrate that the risk of conferring cross-reactivity with known allergens is negligible, indicating that the expression of these proteins in transgenic canola poses a low allergenic risk.

Keywords: Allergenicity prediction; Arabidopsis; AtPAP17; Canola; PTXD.

MeSH terms

  • Allergens / genetics
  • Computational Biology
  • Crops, Agricultural / genetics
  • NAD
  • Oxidoreductases*
  • Phosphites* / metabolism
  • Plants, Genetically Modified / metabolism


  • Oxidoreductases
  • purple acid phosphatase
  • Phosphites
  • NAD
  • Allergens