AltA1 is a family of fungal allergens. It shows a unique beta-barrel comprising 11 beta-strands. There is structural evidence for the location of IgE antibody-binding epitopes. The crystal structure will allow efforts to promote immunotherapy for patients allergic to Alternaria species [1].

1: Alternaria alternata allergen Alt a 1: a unique beta-barrel protein dimer found exclusively in fungi. Chruszcz M, Chapman MD, Osinski T, Solberg R, Demas M, Porebski PJ, Majorek KA, Pomes A, Minor W; J Allergy Clin Immunol. 2012;130:241-247. PMID:22664167