Table 1.

Fate of carbon atoms for each reaction step within the pentose phosphate pathway in Zymomonas mobilis. Upper and lower case characters are used to indicate source and target positions. Data obtained from [35].

Enzyme	:	Substrate 1	+	Substrate 2	→	Product 1	+	Product 2
Upt (X8):	:	Xyl (X7) #ABCDE			→ →	P5P (X1) #ABCDE
PP4 (X11)	:	P5P (X1) #ABCDE	+ +	E4P (X4) #abcd	→ →	GAP (X3) #CDE	+ +	F6P (X5) #ABabcd
PP2 (X9)	:	P5P (X1) #ABCDE	+ +	P5P (X1) #abcde	→ →	S7P (X2) #ABabcde	+	GAP (X3) #CDE
PP3 (X10)	:	S7P (X2) #abcdefg	+ +	GAP (X3) #ABC	→ →	E4P (X4) #defg	+ +	F6P (X5) #abcABC
Gly2 (X12)	:	F6P (X5) #ABCDEF			→ →	GAP (X3) #CBA	+ +	GAP (X3) #DEF
Gly3 (X13)	:	GAP (X3) #ABC			→ →	Pyr #ABC
Gly1 (X14)	:	F6P (X5) #ABCDEF			→ →	G6P (X6) #ABCDEF
PP1 (X15)	:	G6P (X6) #ABCDEF			→ →	CO2 #A	+ +	P5P (X1) #BCDEF