Purification of hog renin by affinity chromatography using the synthetic competitive inhibitor (D-Leu6)octapeptide.
The renin substrate analog His-Pro-Phe-His-Leu-D-Leu-Val-Tyr ([D-Leu6]-octapeptide) acts as a potent inhibitor of renin because of the D-amino acid substitution at the cleavage site. This inhibitor was coupled to CNBr-activated Sepharose 4B to yield a support for affinity chromatography. Hog renin with a specific activity of 1.2 Goldblatt units/mg was in one step purified 195-fold to a final specific activity of 234 Goldblatt units/mg. Application of a pH gradient from 5.0 to 7.5 to the support was found to be the most successful elution program, probably because the [D-Leu6]-octapeptide is not an inhibitor for renin at neutral pH.
D000818:Animals; D002846:Chromatography, Affinity; D004589:Electrophoresis, Disc; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007668:Kidney / Q000201:enzymology; D009842:Oligopeptides / Q000494:pharmacology*; D012083:Renin / Q000302:isolation & purification*; D013045:Species Specificity; D013552:Swine; D000092502:Renin Inhibitors
D009842:Oligopeptides; D012083:Renin; D000092502:Renin Inhibitors