Abstract
Nonspecific lipid-transfer proteins (nsLTPs) have been recognized as allergens in several plant species among which are cereals important in human nutrition. In this report, we purified a 9600 +/- 1 Da protein from both soft wheat and farro bran. Mass spectrometric analyses revealed that these proteins are identical, belong to the nsLTP1 class, and have high sequence homology with nsLTP1 isolated from other cereal species. Their identification was further supported by the ability of the soft wheat nsLTP1 to transfer pyrene-labeled lipids between donor and acceptor membranes. The results are discussed in view of the increasing diffusion on the markets of bran-rich products.
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