Effects of Detergents, Proteins, and Lipids on 2′:3′‐Cyclic‐Nucleotide 3′‐Phosphodiesterase Activity

Abstract
The myelin marker 2′:3′‐cyclic‐nucleotide 3′‐phosphodiesterase (CNPase) was isolated to a lipid‐ and phosphate‐free stage. The effects of exogenously added lipids were tested on this preparation and compared to the known stimulation of the enzyme by detergents and proteins. CNPase could be stimulated 2–3 fold by these various agents which appeared to be additive in their effect. Enzyme‐protein and enzyme‐lipid interactions and possible medical use of the improved assay conditions for CNPase employed in the study are discussed.