ID 4.2.99.24 DE thebaine synthase. AN THS. CA (7S)-O-acetylsalutaridinol = acetate + H(+) + thebaine. CC -!- Isolated from the plant Papaver somniferum (opium poppy). CC -!- The reaction occurs spontaneously when the pH is between 8-9, but the CC enzyme is required at the physiological pH, which is close to 7. DR A0A2U9GHG9, THS1_PAPSO ; A0A2U9GGW3, THS2_PAPSO ; //