Alpha-dioxygenase that catalyzes the primary oxygenation step of a variety of 14-20 carbon fatty acids, containing up to three unsaturated bonds, into their corresponding 2R-hydroperoxides (Probable). Involved in the production of oxylipins that function in cell signaling, wound healing, and protection from infection (Probable). The lipid-derived signaling pathway is involved in the initial response of hot pepper plants to pathogen infection (Probable). Binds 1 heme b (iron(II)-protoporphyrin IX) group per subunit. Binds 1 calcium ion per subunit. Induced by infection with the bacterial pathogen Xanthomonas campestris pv glycine 8ra. Belongs to the peroxidase family.