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  • Title: Heme peroxidase-catalyzed iodination of human angiotensins and the effect of iodination on angiotensin converting enzyme activity.
    Author: Bhuyan BJ, Mugesh G.
    Journal: Inorg Chem; 2008 Aug 04; 47(15):6569-71. PubMed ID: 18598023.
    Abstract:
    The heme peroxidase-catalyzed iodination of human angiotensins I and II is described. It is observed that lactoperoxidase (LPO) can effectively and selectively iodinate the tyrosyl residues in angiotensin peptides. The thiourea/thiouracil-based peroxidase inhibitors effectively inhibit the iodination reactions, indicating that iodination is an enzymatic reaction and the mechanism of iodination is similar to that of peroxidase-catalyzed iodination of thyroglobulin. This study also shows that the monoiodo Ang I is a better substrate for the angiotensin converting enzyme than the native peptide.
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