1. 
   lyase
   <enzyme> An enzyme of the EC Class 4, that strips a group from a molecule to form a double bond or adds a group to a double bond. ... A lyase catalyses the nonhydrolytic removal of a group from a substrate with the resulting formation of a double bond. The reverse reaction is performed by a sy...
   Found op http://www.mondofacto.com/facts/dictionary?lyase
   
   
2. 
   lyase
   (li´ās) any of a class of enzymes that remove groups from their substrates (other than by hydrolysis), leaving double bonds, or that conversely add groups to double bonds.
   Found op http://www.encyclo.co.uk/local/21001
   
   
3. 
   lyase
   in physiology, any member of a class of enzymes that catalyze the addition or removal of the elements of water (hydrogen, oxygen), ammonia ... [2 related articles]
   Found op http://www.britannica.com/eb/a-z/l/86
   
   
4. 
   lyase
   Type: Term Pronunciation: lī′ās Definitions: 1. Class name for those enzymes removing groups nonhydrolytically (EC class 4); prefixes such as 'hydro-' and 'ammonia-' are used to indicate the type of reaction. Trivial names for lyases include synthases, decarboxylases, aldolases, and ...
   Found op http://www.medilexicon.com/medicaldictionary.php?t=51592
   
   
5. 
   Lyase
   In biochemistry, a lyase is an enzyme that catalyzes the breaking of various chemical bonds by means other than hydrolysis and oxidation, often forming a new double bond or a new ring structure. For example, an enzyme that catalyzed this reaction would be a lyase: Lyases differ from other enzymes i...
   Found op http://en.wikipedia.org/wiki/Lyase
   
   

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