Brassica napus pollen oleosins possess a characteristic C-terminal domain

The sequences of Brassica napus L. pollen oleosins have been determined and examined. Contrary to a recent report, inferred primary sequences of pollen oleosins do include a unique C-terminal domain characterised by the presence of a repetitive motif of three alanine and one proline residue (AAAP). This motif appears to be present in all oleosins expressed in pollen, but not in oleosins from other tissues.