1. 
   phosphodiesterase
   An enzyme that cleaves phosphodiesters to give a phosphomonoester and a free hydroxyl group. Examples include RNAase, DNAase, phospholipases C and D and the enzymes that convert cyclic nucleotides to the monoester forms. In casual usage the cAMP phosphodiesterase is usually meant.
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
2. 
   phosphodiesterase
   <enzyme> An enzyme that cleaves phosphodiesters to give a phosphomonoester and a free hydroxyl group. ... Examples include RNase, DNase, phospholipases C and D and the enzymes that convert cyclic nucleotides to the monoester forms. In casual usage the cAMP phosphodiesterase is usually meant. ....
   Found op http://www.mondofacto.com/facts/dictionary?phosphodiesterase
   
   
3. 
   Phosphodiesterase
   A phosphodiesterase (PDE) is any enzyme that breaks a phosphodiester bond. Usually, people speaking of phosphodiesterase are referring to cyclic nucleotide phosphodiesterases, which have great clinical significance and are described below. However, there are many other families of phosphodiesterase...
   Found op http://en.wikipedia.org/wiki/Phosphodiesterase
   
   

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