Probable oxidoreductase (Probable). Lacks peroxidase activity (PubMed:24253521). Inhibits the peroxidase activity of PXDN through its interaction (PubMed:24253521). {ECO:0000269|PubMed:24253521, ECO:0000305|PubMed:24253521}. [Isoform PMR1]: Endonuclease selectively degrading some target mRNAs while they are engaged by translating ribosomes, among which albumin and beta-globin mRNAs. . This is the function of PXDNL (peroxidasin like, ENSG00000147485).