Key points are not available for this paper at this time.
The results described in the preceding paper (Thompson & Dawson, 1964) suggested that two enzymes are responsible for the degradation of triphosphoinositide by extracts of ox brain. The present paper describes the isolation and properties of a brain triphosphoinositide-phosphodiesterase preparation that was free from phosphomonoesterase activity.
Thompson et al. (1964) studied this question.