<p>This entry represents a N-terminal domain that has a Barwin-like double psi beta-barrel structure(DPBB). It is found in proteins like expasin and pollen allergens. The major timothy grass pollen allergen Phl p 1 is one of the most potent and frequently recognised environmental allergens [<cite idref="PUB00034492"/>].</p> Expansin/pollen allergen, DPBB domain