Endothelin-converting enzyme-1 (ECE-1) is a membrane-bound metallo-protease which specifically converts the inactive precursor big-endothelin-1 (big ET-1) to the vasoactive endothelin-1 (ET-1). Six different mouse hybridoma cell lines have been generated secreting monoclonal antibodies specific to human ECE-1. These antibodies have been proven useful in a fast and efficient one-step purification of membrane-bound ECE-1 as well as of artificial soluble ECE-1 by immunoaffinity chromatography. The antibodies are suitable for a quantification of ECE-1 in solution by a sandwich-ELISA and for the immunohistochemical detection of ECE-1 in the cell membrane.
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