Part:BBa_K4197018

Gene coding for Gal d 2

Gene coding for the egg allergen called Gal d 2.

Introduction

This part is composed of the gene coding for the allergen of Hen’s egg Gal d 2 (NCBI: V00383.1). The Hen's egg allergy prevalence is 0,5-2,5% in developped countries and Gal d 2 compose 54% of its dry mass (Palosuo and al. 2018). Gal d 2 have already been expressed in Express Iq E. coli and was able to bind the IgE of patient with egg's allergie (Dhanapala and al. 2015).

Construction

The objective of the INSA-UPS 2022 team was to display Gal d 2 on the surface of E. coli so the ordered sequence was merged to OmpA membrane lippoprotein (see part BBa_K1694009).

References

More information about the project for which the part was created: DAISY (INSA-UPS 2022)

Other parts to display allergens:
- OmpA_Ara h 2
- OmpA_Ana o 3
- OmpA_Fel d 4

1. Dhanapala, P., Doran, T., Tang, M. L. K., & Suphioglu, C. (2015). Production and immunological analysis of IgE reactive recombinant egg white allergens expressed in Escherichia coli. Molecular Immunology, 65(1), 104–112. https://doi.org/10.1016/j.molimm.2015.01.006
2. Palosuo, K., Kukkonen, A. K., Pelkonen, A. S., & Mäkelä, M. J. (2018). Gal d 1-specific IgE predicts allergy to heated egg in Finnish children. Pediatric Allergy and Immunology, 29(6), 637–643. https://doi.org/10.1111/pai.12954

Sequence and Features

Assembly Compatibility:

• 10
  COMPATIBLE WITH RFC[10]
• 12
  INCOMPATIBLE WITH RFC[12]

  Illegal NheI site found at 114
  
• 21
  COMPATIBLE WITH RFC[21]
• 23
  COMPATIBLE WITH RFC[23]
• 25
  COMPATIBLE WITH RFC[25]
• 1000
  INCOMPATIBLE WITH RFC[1000]

  Illegal SapI.rc site found at 325