Characterization of the Group I Allergen of Bahia Grass Pollen

Four allergenic proteins of Bahia (BA) grass pollen with estimated molecular weights of 45, 33, 31 and 28 kD were previously detected. Although all four proteins were reactive with BA grass allergic patient sera, the 33kD compo- nent was previously verified as a major allergen. The investigators report here for the first time, the similarities between the group I 33 kD allergen of BA grass, Pas n 1, and Group I allergen of Timothy grass, Phl p 1, using N-terminal amino acid sequencing and monoclonal antibodies, IG12 and BOT14, made to Timothy Phl p 1.