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  • Title: Post-translational modifications of chloroperoxidase from Caldariomyces fumago.
    Author: Kenigsberg P, Fang GH, Hager LP.
    Journal: Arch Biochem Biophys; 1987 May 01; 254(2):409-15. PubMed ID: 2883934.
    Abstract:
    The secreted form of the halogenating glycoenzyme, chloroperoxidase, is processed from a precursor containing a 21-residue-long, moderately hydrophobic signal sequence, at an atypical Gln-Glu peptide bond. Following cleavage, the N-terminal glutamic acid readily cyclizes into pyroglutamic acid. Chloroperoxidase contains two high-mannose N-glycosylation sites, identified as Asn12 and Asn213. Other modifications include deamidation of residues Asn13, Asn198, and Gln183 into the corresponding acids. Finally, structural arguments suggest that Cys87 may be the axial heme ligand in the active site of chloroperoxidase.
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