2C1U:
reference: Activation and catalysis of the di-heme cytochrome c peroxidase from Paracoccus pantotrophus., Echalier A, Goodhew CF, Pettigrew GW, Fulop V, Structure. 2006 Jan;14(1):107-17. PMID: 16407070

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).