Catalyzes peroxidative halogenations involved in the biosynthesis of clardariomycin (2,2-dichloro-1,3-cyclo-pentenedione). The enzyme also has potent catalase activity and in the absence of halide ion, acts as a peroxidase similar to plant peroxidases. RH + Cl(-) + H2O2 = RCl + 2 H2O. Binds 1 heme b (iron(II)-protoporphyrin IX) group per subunit. Binds 1 Mn(2+) ion per subunit. N- and O-glycosylated. Belongs to the chloroperoxidase family. The O-glycosylation on Ser-269 is identified in PubMed:8747463 as D-xylose based on weak electron density. Such a modification has not been reported in the fungi, and the saccharide is probably D-mannose as at the other positions.