Grass pollen allergens

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Abstract
Summary: To date, eleven groups of grass pollen allergens eliciting a specific IgE response in atopic individuals have been identified. Groups 1 and 5 allergens are the most critical (major) pollen allergens leading to the sensitization of 90% and 65–85% allergic patients, respectively. Other allergens frequently involved in the IgE response include groups 2/3, 4, 6, 7, 10–13 allergens. Allergens found in various Pooideae exhibit high homology in terms of their amino acid sequence composition, which translates into significant cross‐reactivity in terms of antibody (IgE and IgG) as well as T cell responses. Nevertheless, for a given allergen group, there is evidence of both interspecies (i.e. differences in amino acid sequences) and intraspecies (multigenes, post‐translational modification, mRNA splicing or editing) molecular variability.