1. 
   pacemaker enzyme
   (from the article `metabolism`) ...of metabolites through catabolic and anabolic pathways, and for integrating the numerous different pathways in the cell, is through the regulation ... The flux of nutrients along each metabolic pathway is governed chiefly by two factors: (1) the availability of sub...
   Found op http://www.britannica.com/eb/a-z/p/1
   
   

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