MetaCyc Pathway: pentose phosphate pathway (non-oxidative branch) II in Escherichia coli BW25113

Reactions and Genes	Guanosine 0.35306 mM (C)
Ribose-5-phosphate isomerase (in reverse): D-ribulose 5-phosphate→D-ribose 5-phosphate (EC 5.3.1.6)
b2914 (rpiA)	N.D.
b4090 (rpiB)	+0.3
Ribulose-phosphate 3-epimerase: D-ribulose 5-phosphate→D-xylulose 5-phosphate (EC 5.1.3.1)
b3386 (rpe)	+0.2
b4301 (sgcE)	-0.1
Transketolase (in reverse): D-ribose 5-phosphate + D-xylulose 5-phosphate→D-sedoheptulose 7-phosphate + D-glyceraldehyde 3-phosphate (EC 2.2.1.1)
b2465 (tktB)	+1.7
b2935 (tktA)	+1.9
Diphosphate--fructose-6-phosphate 1-phosphotransferase: D-sedoheptulose 7-phosphate + diphosphate→D-sedoheptulose 1,7-bisphosphate + H+ + phosphate (EC 2.7.1.90)
No genes
Fructose-bisphosphate aldolase: D-sedoheptulose 1,7-bisphosphate→D-erythrose 4-phosphate + glycerone phosphate (EC 4.1.2.13)
b2097 (b2097)	+0.2
b2925 (fbaA)	N.D.
Transketolase: D-erythrose 4-phosphate + D-xylulose 5-phosphate→D-glyceraldehyde 3-phosphate + β-D-fructofuranose 6-phosphate (EC 2.2.1.1)
b2465 (tktB)	+1.7
b2935 (tktA)	+1.9

Candidate genes for each reaction are identified from best hits to MetaCyc; by matching EC numbers (which are assigned by TIGRFam, SEED, or best hits to KEGG); or by matching SEED roles to KEGG reactions to MetaCyc reactions. See the "Protein" tab of each gene for more information