Identification of polcalcin as a novel allergen of Amaranthus retroflexuspollen

Amaranthus retroflexus(Redroot Pigweed) is one of the main sources of allergenic pollens in temperate areas. Polcalcin is a well-known panallergen involved in cross-reactivity between different plants. The aim of this study was the molecular cloning and expression of polcalcin, as well as evaluating its IgE-reactivity with A. retroflexussensitive patients’ sera.