226 



UNITY AND DIVERSITY IN BIOCHEMISTRY 



amino 

 •cid« 



glucow pho8phogluconic 



C-6-P 



/ 



i[ 



I 



pentosephosphates 



F-«-P 



P l,< PP 5edoh«ptulose-7-P 



trioicphosphates 



3-phoaphogIyceric add 



{{ 



-CHa-CH = CH-CO-S-CoA 



-CHj-CHj— CH,— CO— S- CoA 



-CH2-C-CH,-CO-S- CoA 

 OH 



■// 



-CHj-C-CHj-CO-S-CoA 



HSCoA 



acccoicetylCoA 



osuccinate 



acccoacctaie 



amino actda 



fumarate 



ketoglutaraldehyde 

 + glycine 



a — ketoglutarate * ' amino acids 



succinylCoA 



luccinate ' + 



acetoacetyl CoA 



Fig. 56 — Interrelation of the various priming reactions. 



