Lipoxygenase that metabolizes linoleic acid to 9- and 13-hydroperoxy fatty acids. Specific towards 13-HPODE yielding 89% of the total HPODE. (9Z,12Z)-octadecadienoate + O2 = 13-hydroperoxy-(9Z,11E)-octadecadienoate Three His residues, the carboxyl oxygen of the C-terminal Ile or Val residue, and a fifth residue, usually Asn, ligate the metal, which binds water to form a catalytic base Mn(2+)OH(2) for hydrogen abstraction. Belongs to the lipoxygenase family. Manganese lipoxygenase subfamily.