OPOJI, 



CHO-OP03H, 



I 



CO 



I 



HOCIi 



,j- ■* — (point of cleavage) 



h:coii 



OH 11 

 (ring form) 



D-Fructosc-1 ,G-diphosphate 



^9% 



ricoH 

 I 



CH,-0P03H., 

 (open chain form) 



I 



11 %l (5) 



(aMnlasc) 



/^ 



CHoOPOsH. 

 CO 



I 



CH.OH 



Dihydroxyacetone- 

 phosphate 



4% 



(ij) 



90 Tc 



(tiioseplio»|)liate 



isomeiase) 



+ 211 



Hal'U, 



lIV, 

 V) 



- 211 



(D-i 



3 



del 



CHO 



I 

 HCOH 

 I 

 CHoOPO,Ho 



D-Glyceraklcliyde-3- 

 pliospliate 



vcciaMeliydL--! |/r DPN 

 -phosphate I (7) ( 

 >yam,ena-se) | Nj3p>^..H^ 



C3H5(OH)3 



Clycerol 



COOH 

 I 

 HCOH 

 1 

 CH.OPOsH, 



D-Glyceric acid 3-phosphate 



[Enzj-me-glyccric acid-3- phosphate complex] 

 + H,PO,l is)T- IIjPOi 



ATP ADP 



(9) 



>• 



(trail jphospliuryluM', 

 Mg++ or Mn++) 



■1 



\- 



iiTcKio) y-'/" , , , , 



' (phosphoglyceromutase) 



COOH 



I 

 HC-O— PO3H2 



- H.O 



(11) 



CH2OH 



D-Glyceric acid 2-phosphate 



COOH 



I 

 HOCH 



+ H,0 

 (enolase) 



DPN DPXHo 



(13) 



coopajH, . 



HCOH 



I 



CH.OPOjH, 

 D-Glyceric acid 1 ,3-diphosphate 



COOH 



I 

 COPO.H, 



li 

 CIL 



Pyruvic acid ciiol phospliate 

 ADPt^I a 



jl (12) (tiaiispliosphorylasc, 



COOH 



I 

 CO 



CH3 



L-Lactic acid 



(lactic acid 

 dehydrogenase) 



CH3 

 Pyruvic acid 



(aerobic metabolism) 

 Fig. 13-3. Reactions of glycolysis {continued). Labeling as in Fig. 13-1. 



329 



