MetaCyc Pathway: γ-glutamyl cycle in Escherichia coli ECOR38

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5-oxoprolinase (ATP-hydrolyzing):
5-oxo-L-proline + ATP + 2 H2O→L-glutamate + ADP + H+ + phosphate
(EC 3.5.2.9)
HEPCGN_01205 (pxpB)
HEPCGN_01210 (pxpC)
HEPCGN_01215 (pxpA)
Glutamate--cysteine ligase:
L-glutamate + L-cysteine + ATP→γ-L-glutamyl-L-cysteine + ADP + H+ + phosphate
(EC 6.3.2.2)
HEPCGN_00635 (ybdK)
HEPCGN_19955 (gshA)
Glutathione synthase:
γ-L-glutamyl-L-cysteine + ATP + glycine→glutathione + ADP + H+ + phosphate
(EC 6.3.2.3)
HEPCGN_18580 (gshB)
Gamma-glutamyltransferase:
glutathione + a proteinogenic amino acid→an α-(γ-L-glutamyl)-L-amino acid + L-cysteinylglycine
(EC 2.3.2.2)
HEPCGN_15620 (ggt)
an α-(γ-L-glutamyl)-L-amino acid→5-oxo-L-proline + an L-amino acid (EC 4.3.2.9)
No genes
Cytosol nonspecific dipeptidase:
L-cysteinylglycine + H2O→L-cysteine + glycine
(EC 3.4.13.18)
HEPCGN_07805 (pepD)
HEPCGN_09980 (pepA)
HEPCGN_20795 (pepB)
HEPCGN_21545 (ypdF)
HEPCGN_23160 (pepN)

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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