Cargo protein of a type 1 encapsulin nanocompartment. A heme-dependent peroxidase (By similarity). This cargo-loaded encapsulin nanocompartment is probably involved in protection against oxidative damage (By similarity). 2 a phenolic donor + H2O2 = 2 a phenolic radical donor + 2 H2O Found in a complex with type 1 encapsulin, strongly suggesting it is found in a type 1 encapsulin nanocompartment (PubMed:25500374). Homotetramer, presumably also in the type 1 encapsulin nanocompartment (By similarity). The C-terminus (residues 312-335) targets the protein to the type 1 encapsulin nanocompartment. Belongs to the DyP-type peroxidase family.