Immunodetection of tubulin carboxypeptidase activity on nitrocellulose membrane after gel electrophoresis and blotting.

Abstract

It was found that the detyrosination of tyrosinated tubulin by tubulin carboxypeptidase can occur when both the enzyme and the substrate are adsorbed on nitrocellulose. This, and the use of a specific antibody that recognizes detyrosinated tubulin allowed us to localize tubulin carboxypeptidase on a nitrocellulose membrane after agarose gel electrophoresis and blotting. The method was also extended to detect pancreatic carboxypeptidase A.