MetaCyc Pathway: pentose phosphate pathway in Escherichia coli BW25113

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Glucose-6-phosphate dehydrogenase:
D-glucopyranose 6-phosphate + NADP+→6-phospho D-glucono-1,5-lactone + NADPH + H+ (EC 1.1.1.49)
b1852 (zwf)
6-phosphogluconolactonase:
6-phospho D-glucono-1,5-lactone + H2O→D-gluconate 6-phosphate + H+ (EC 3.1.1.31)
b0767 (ybhE)
Phosphogluconate dehydrogenase (decarboxylating):
D-gluconate 6-phosphate + NADP+→D-ribulose 5-phosphate + CO2 + NADPH (EC 1.1.1.44)
b2029 (gnd)
Ribose-5-phosphate isomerase (in reverse):
D-ribulose 5-phosphate→D-ribose 5-phosphate (EC 5.3.1.6)
b2914 (rpiA)
b4090 (rpiB)
Ribulose-phosphate 3-epimerase:
D-ribulose 5-phosphate→D-xylulose 5-phosphate (EC 5.1.3.1)
b3386 (rpe)
b4301 (sgcE)
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)
b2935 (tktA)
Transaldolase:
D-sedoheptulose 7-phosphate + D-glyceraldehyde 3-phosphate→D-erythrose 4-phosphate + β-D-fructofuranose 6-phosphate (EC 2.2.1.2)
b0008 (talB)
b0825 (mipB)
b2464 (talA)
b3946 (fsaB)
Transketolase:
D-erythrose 4-phosphate + D-xylulose 5-phosphate→β-D-fructofuranose 6-phosphate + D-glyceraldehyde 3-phosphate (EC 2.2.1.1)
b2465 (tktB)
b2935 (tktA)

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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