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Angiotensin converting enzyme immobilized on magnetic beads as a tool for ligand fishing

de Almeida, F. G.; Vanzolini, K. L.; Cass, Q. B. J. Pharmac. Biomed. Anal. 2017, 132, 159–164. DOI: 10.1016/j.jpba.2016.10.006

Angiotensin converting enzyme (ACE) presents an important role in blood pressure regulation, since that converts angiotensin I to the vasoconstrictor angiotensin II.  In order to endorse this research field we have developed a new tool for ACE ligand screening. To this end, ACE was extracted from bovine lung, purified and chemically immobilized in modified ferrite magnetic beads (ACE-MBs). At the fishing assay, ACE-MBs were able not only to fish out the reference inhibitor, but also one peptide from a pool of tryptic digested BSA.