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

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)

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