MetaCyc Pathway: superpathway of L-lysine, L-threonine and L-methionine biosynthesis II in Escherichia coli BW25113

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Reactions and Genes D-Glucuronic Acid (C)
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Aspartate kinase:
L-aspartate + ATP→L-aspartyl-4-phosphate + ADP
(EC 2.7.2.4)
b0002 (thrA) -3.5
b3940 (metL) -0.5
b4024 (lysC) -1.2
Aspartate-semialdehyde dehydrogenase (in reverse):
L-aspartyl-4-phosphate + NADPH + H+→L-aspartate 4-semialdehyde + NADP+ + phosphate
(EC 1.2.1.11)
b2319 (usg) -0.3
b3433 (asd) N.D.
L-aspartate 4-semialdehyde + pyruvate→(2S,4S)-4-hydroxy-2,3,4,5-tetrahydrodipicolinate + H+ + H2O (EC 4.3.3.7)
b0268 (yagE) -0.1
b2478 (dapA) N.D.
b4298 (yjhH) -0.1
Homoserine dehydrogenase (in reverse):
L-aspartate 4-semialdehyde + NAD(P)H + H+→L-homoserine + NAD(P)+
(EC 1.1.1.3)
b0002 (thrA) -3.5
b3940 (metL) -0.5
Homoserine kinase:
L-homoserine + ATP→O-phospho-L-homoserine + ADP + H+
(EC 2.7.1.39)
b0003 (thrB) -4.3
(2S,4S)-4-hydroxy-2,3,4,5-tetrahydrodipicolinate + NAD(P)H + H+→(S)-2,3,4,5-tetrahydrodipicolinate + NAD(P)+ + H2O (EC 1.17.1.8)
b0031 (dapB) N.D.
Cystathionine gamma-synthase:
O-phospho-L-homoserine + L-cysteine→L-cystathionine + phosphate
(EC 2.5.1.48)
b3939 (metB) -3.8
LL-diaminopimelate aminotransferase (in reverse):
(S)-2,3,4,5-tetrahydrodipicolinate + L-glutamate + H+ + H2O→L,L-diaminopimelate + 2-oxoglutarate
(EC 2.6.1.83)
No genes
Threonine synthase:
O-phospho-L-homoserine + H2O→L-threonine + phosphate
(EC 4.2.3.1)
b0004 (thrC) -5.3
Diaminopimelate epimerase:
L,L-diaminopimelate→meso-diaminopimelate
(EC 5.1.1.7)
b1852 (zwf) N.D.
b3809 (dapF) N.D.
Cysteine-S-conjugate beta-lyase:
L-cystathionine→2-aminoprop-2-enoate + L-homocysteine
(EC 4.4.1.13)
No genes
Diaminopimelate decarboxylase:
meso-diaminopimelate + H+→L-lysine + CO2
(EC 4.1.1.20)
b2838 (lysA) -6.0
5-methyltetrahydropteroyltriglutamate--homocysteine S-methyltransferase:
L-homocysteine + 5-methyltetrahydropteroyl tri-L-glutamate→L-methionine + tetrahydropteroyl tri-L-glutamate
(EC 2.1.1.14)
b3829 (metE) -4.9
Tryptophanase:
2-aminoprop-2-enoate→2-iminopropanoate
(spontaneous) (EC 4.1.99.1; 4.1.99.2; 4.3.1.13; 4.3.1.17; 4.3.1.18; 4.3.3.8; 4.4.1.1; 4.4.1.13; 4.4.1.15; 4.4.1.25; 4.4.1.28; 4.4.1.35; 4.5.1.2)
b1814 (sdaA) -0.3
b1919 (yedO) -0.4
b2366 (dsdA) -0.3
b2797 (sdaB) +0.1
b3708 (tnaA) +0.1
b4471 (tdcG) +0.2
2-iminopropanoate + H2O→pyruvate + ammonium (spontaneous) (EC 3.5.99.10; 4.1.99.1; 4.1.99.2; 4.3.1.13; 4.3.1.17; 4.3.1.18; 4.3.3.8; 4.4.1.1; 4.4.1.13; 4.4.1.15; 4.4.1.25; 4.4.1.28; 4.4.1.35; 4.5.1.2)
b1814 (sdaA) -0.3
b1919 (yedO) -0.4
b2366 (dsdA) -0.3
b2797 (sdaB) +0.1
b3113 (yhaR) -0.0
b3708 (tnaA) +0.1
b4243 (yjgF) -0.8
b4471 (tdcG) +0.2

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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