substrate saturation kinetics were performed using the 18-fold purified enzyme and the lowest km values were obtained for 3alpha,7alpha-dihydroxy bile acid and bile salt substrates including chenodeoxycholic acid ( km 0.048 mm ) , glycochenodeoxycholic acid ( km 0.083 mm ) and taurochenodeoxycholic acid ( km 0.059 mm ) .
C0008024
chenodeoxycholic acid
C0017903
glycochenodeoxycholic acid