KEGG   PATHWAY: sea00270
Entry
sea00270                    Pathway                                
Name
Cysteine and methionine metabolism - Salmonella enterica subsp. enterica serovar Agona SL483
Description
Cysteine and methionine are sulfur-containing amino acids. Cysteine is synthesized from serine through different pathways in different organism groups. In bacteria and plants, cysteine is converted from serine (via acetylserine) by transfer of hydrogen sulfide [MD:M00021]. In animals, methionine-derived homocysteine is used as sulfur source and its condensation product with serine (cystathionine) is converted to cysteine [MD:M00338]. Cysteine is metabolized to pyruvate in multiple routes. Methionine is an essential amino acid, which animals cannot synthesize. In bacteria and plants, methionine is synthesized from aspartate [MD:M00017]. S-Adenosylmethionine (SAM), synthesized from methionine and ATP, is a methyl group donor in many important transfer reactions including DNA methylation for regulation of gene expression. SAM may also be used to regenerate methionine in the methionine salvage pathway [MD:M00034].
Class
Metabolism; Amino acid metabolism
Pathway map
sea00270  Cysteine and methionine metabolism
sea00270

Module
sea_M00017  Methionine biosynthesis, aspartate => homoserine => methionine [PATH:sea00270]
sea_M00021  Cysteine biosynthesis, serine => cysteine [PATH:sea00270]
Other DBs
GO: 0006534 0006555
Organism
Salmonella enterica subsp. enterica serovar Agona SL483 [GN:sea]
Gene
SeAg_B3917  serine acetyltransferase 4 [KO:K00640] [EC:2.3.1.30]
SeAg_B0498  pyridoxal-5'-phosphate-dependent enzyme, beta subunit [KO:K01738] [EC:2.5.1.47]
SeAg_B2574  cysK; cysteine synthase A [KO:K01738] [EC:2.5.1.47]
SeAg_B3335  metC; cystathionine beta-lyase [KO:K01760] [EC:4.4.1.13]
SeAg_B1710  protein MalY [KO:K14155] [EC:4.4.1.13]
SeAg_B1608  aminotransferase class I and II [KO:K14155] [EC:4.4.1.13]
SeAg_B4435  metH; methionine synthase [KO:K00548] [EC:2.1.1.13]
SeAg_B4194  metE; 5-methyltetrahydropteroyltriglutamate-homocysteine S-methyltransferase [KO:K00549] [EC:2.1.1.14]
SeAg_B3252  metK; S-adenosylmethionine synthetase [KO:K00789] [EC:2.5.1.6]
SeAg_B0197  speD; S-adenosylmethionine decarboxylase proenzyme [KO:K01611] [EC:4.1.1.50]
SeAg_B0198  speE; spermidine synthase [KO:K00797] [EC:2.5.1.16]
SeAg_B0246  mtnN; MTA/SAH nucleosidase [KO:K01243] [EC:3.2.2.9]
SeAg_B2773  conserved hypothetical protein TIGR00726 [KO:K05810] [EC:2.4.2.1 2.4.2.28 3.5.4.4]
SeAg_B4505  tyrB; aromatic-amino-acid transaminase [KO:K00832] [EC:2.6.1.57]
SeAg_B1284  GAF domain protein [KO:K08968] [EC:1.8.4.14]
SeAg_B1127  modification methylase EcoRII [KO:K00558] [EC:2.1.1.37]
SeAg_B2935  luxS; S-Ribosylhomocysteinase [KO:K07173] [EC:4.4.1.21]
SeAg_B4477  lysC; aspartokinase III, lysine-sensitive [KO:K00928] [EC:2.7.2.4]
SeAg_B0002  thrA; aspartokinase/homoserine dehydrogenase I [KO:K12524] [EC:2.7.2.4 1.1.1.3]
SeAg_B4348  metL; aspartokinase/homoserine dehydrogenase II [KO:K12525] [EC:2.7.2.4 1.1.1.3]
SeAg_B3740  asd; aspartate-semialdehyde dehydrogenase [KO:K00133] [EC:1.2.1.11]
SeAg_B0003  thrB; homoserine kinase [KO:K00872] [EC:2.7.1.39]
SeAg_B4428  metA; homoserine O-succinyltransferase [KO:K00651] [EC:2.3.1.46 2.3.1.31]
SeAg_B4347  metB; O-succinylhomoserine (thiol)-lyase [KO:K01739] [EC:2.5.1.48]
SeAg_B4128  ilvE; branched-chain amino acid aminotransferase [KO:K00826] [EC:2.6.1.42]
SeAg_B2937  gshA; glutamate--cysteine ligase [KO:K01919] [EC:6.3.2.2]
SeAg_B3258  gshB; glutathione synthase [KO:K01920] [EC:6.3.2.3]
SeAg_B1004  aspC; aspartate transaminase [KO:K00813] [EC:2.6.1.1]
SeAg_B2685  conserved hypothetical protein [KO:K01011] [EC:2.8.1.1 2.8.1.2]
SeAg_B3165  aspartate racemase [KO:K25316] [EC:5.1.1.10]
SeAg_B1167  D-cysteine desulfhydrase [KO:K05396] [EC:4.4.1.15]
SeAg_B3550  mdh; malate dehydrogenase, NAD-dependent [KO:K00024] [EC:1.1.1.37]
SeAg_B1305  L-serine ammonia-lyase [KO:K01752] [EC:4.3.1.17]
SeAg_B3114  L-serine ammonia-lyase [KO:K01752] [EC:4.3.1.17]
SeAg_B2342  L-serine ammonia-lyase [KO:K01752] [EC:4.3.1.17]
SeAg_B3428  L-serine ammonia-lyase [KO:K01752] [EC:4.3.1.17]
SeAg_B2585  cysM; cysteine synthase B [KO:K12339] [EC:2.5.1.144]
SeAg_B3223  serA; phosphoglycerate dehydrogenase [KO:K00058] [EC:1.1.1.95 1.1.1.399]
SeAg_B0982  serC; phosphoserine aminotransferase [KO:K00831] [EC:2.6.1.52]
Compound
C00019  S-Adenosyl-L-methionine
C00021  S-Adenosyl-L-homocysteine
C00022  Pyruvate
C00041  L-Alanine
C00049  L-Aspartate
C00051  Glutathione
C00059  Sulfate
C00065  L-Serine
C00073  L-Methionine
C00094  Sulfite
C00097  L-Cysteine
C00109  2-Oxobutanoate
C00155  L-Homocysteine
C00170  5'-Methylthioadenosine
C00197  3-Phospho-D-glycerate
C00263  L-Homoserine
C00283  Hydrogen sulfide
C00409  Methanethiol
C00441  L-Aspartate 4-semialdehyde
C00491  L-Cystine
C00506  L-Cysteate
C00606  3-Sulfino-L-alanine
C00793  D-Cysteine
C00957  Mercaptopyruvate
C00979  O-Acetyl-L-serine
C01005  O-Phospho-L-serine
C01077  O-Acetyl-L-homoserine
C01102  O-Phospho-L-homoserine
C01118  O-Succinyl-L-homoserine
C01137  S-Adenosylmethioninamine
C01180  4-Methylthio-2-oxobutanoic acid
C01234  1-Aminocyclopropane-1-carboxylate
C01817  L-Homocystine
C01962  Thiocysteine
C02218  Dehydroalanine
C02291  L-Cystathionine
C02356  (S)-2-Aminobutanoate
C02989  L-Methionine S-oxide
C03082  4-Phospho-L-aspartate
C03089  5-Methylthio-D-ribose
C03145  N-Formylmethionine
C03232  3-Phosphonooxypyruvate
C03431  S-Inosyl-L-homocysteine
C03539  S-Ribosyl-L-homocysteine
C04188  S-Methyl-5-thio-D-ribose 1-phosphate
C04582  S-Methyl-5-thio-D-ribulose 1-phosphate
C05324  Nicotianamine
C05524  Aminoacyl-L-methionine
C05526  S-Glutathionyl-L-cysteine
C05527  3-Sulfinylpyruvate
C05528  3-Sulfopyruvate
C05823  3-Mercaptolactate
C05824  S-Sulfo-L-cysteine
C06547  Ethylene
C08276  3-(Methylthio)propanoate
C09306  Sulfur dioxide
C11437  1-Deoxy-D-xylulose 5-phosphate
C11481  HSO3-
C11499  (S)-3-Sulfolactate
C11537  (2R)-3-Sulfolactate
C15606  1,2-Dihydroxy-5-(methylthio)pent-1-en-3-one
C15650  2,3-Diketo-5-methylthiopentyl-1-phosphate
C15651  2-Hydroxy-3-keto-5-methylthiopentenyl-1-phosphate
C18049  N-Acyl-L-homoserine lactone
C19787  5'-S-Methyl-5'-thioinosine
C21015  gamma-L-Glutamyl-L-2-aminobutyrate
C21016  Ophthalmate
C22359  S-Methyl-1-thio-D-xylulose 5-phosphate
Reference
  Authors
Sekowska A, Denervaud V, Ashida H, Michoud K, Haas D, Yokota A, Danchin A
  Title
Bacterial variations on the methionine salvage pathway.
  Journal
BMC Microbiol 4:9 (2004)
DOI:10.1186/1471-2180-4-9
Reference
  Authors
Ashida H, Saito Y, Kojima C, Kobayashi K, Ogasawara N, Yokota A.
  Title
A functional link between RuBisCO-like protein of Bacillus and photosynthetic RuBisCO.
  Journal
Science 302:286-90 (2003)
DOI:10.1126/science.1086997
Reference
  Authors
Sekowska A, Danchin A.
  Title
The methionine salvage pathway in Bacillus subtilis.
  Journal
BMC Microbiol 2:8 (2002)
DOI:10.1186/1471-2180-2-8
Reference
  Authors
Berger BJ, English S, Chan G, Knodel MH.
  Title
Methionine regeneration and aminotransferases in Bacillus subtilis, Bacillus cereus, and Bacillus anthracis.
  Journal
J Bacteriol 185:2418-31 (2003)
DOI:10.1128/JB.185.8.2418-2431.2003
Reference
  Authors
Goyer A, Collakova E, Shachar-Hill Y, Hanson AD
  Title
Functional characterization of a methionine gamma-lyase in Arabidopsis and its implication in an alternative to the reverse trans-sulfuration pathway.
  Journal
Plant Cell Physiol 48:232-42 (2007)
DOI:10.1093/pcp/pcl055
Reference
  Authors
Rebeille F, Jabrin S, Bligny R, Loizeau K, Gambonnet B, Van Wilder V, Douce R, Ravanel S
  Title
Methionine catabolism in Arabidopsis cells is initiated by a gamma-cleavage process and leads to S-methylcysteine and isoleucine syntheses.
  Journal
Proc Natl Acad Sci U S A 103:15687-92 (2006)
DOI:10.1073/pnas.0606195103
Reference
  Authors
Pirkov I, Norbeck J, Gustafsson L, Albers E
  Title
A complete inventory of all enzymes in the eukaryotic methionine salvage pathway.
  Journal
FEBS J 275:4111-20 (2008)
DOI:10.1111/j.1742-4658.2008.06552.x
Reference
  Authors
Ashida H, Saito Y, Kojima C, Yokota A
  Title
Enzymatic characterization of 5-methylthioribulose-1-phosphate dehydratase of the methionine salvage pathway in Bacillus subtilis.
  Journal
Biosci Biotechnol Biochem 72:959-67 (2008)
DOI:10.1271/bbb.70651
Reference
  Authors
Kitabatake M, So MW, Tumbula DL, Soll D
  Title
Cysteine biosynthesis pathway in the archaeon Methanosarcina barkeri encoded by acquired bacterial genes?
  Journal
J Bacteriol 182:143-5 (2000)
DOI:10.1128/JB.182.1.143-145.2000
Reference
  Authors
Mino K, Ishikawa K
  Title
Characterization of a novel thermostable O-acetylserine sulfhydrylase from Aeropyrum pernix K1.
  Journal
J Bacteriol 185:2277-84 (2003)
DOI:10.1128/JB.185.7.2277-2284.2003
Reference
  Authors
Tanabe S
  Title
Development of assay methods for endogenous inorganic sulfur compounds and sulfurtransferases and evaluation of the physiological functions of bound sulfur.
  Journal
Yakugaku Zasshi 128:881-900 (2008)
DOI:10.1248/yakushi.128.881
Reference
  Authors
Nishizuka Y, Seyama Y, Ikai A, Ishimura Y, Kawaguchi A (eds).
  Title
[Cellular Functions and Metabolic Maps] (In Japanese)
  Journal
Tokyo Kagaku Dojin (1997)
Reference
  Authors
Gutierrez JA, Crowder T, Rinaldo-Matthis A, Ho MC, Almo SC, Schramm VL
  Title
Transition state analogs of 5'-methylthioadenosine nucleosidase disrupt quorum sensing.
  Journal
Nat Chem Biol 5:251-7 (2009)
DOI:10.1038/nchembio.153
Related
pathway
sea00010  Glycolysis / Gluconeogenesis
sea00250  Alanine, aspartate and glutamate metabolism
sea00260  Glycine, serine and threonine metabolism
sea00290  Valine, leucine and isoleucine biosynthesis
sea00430  Taurine and hypotaurine metabolism
sea00480  Glutathione metabolism
sea00620  Pyruvate metabolism
sea00640  Propanoate metabolism
sea00770  Pantothenate and CoA biosynthesis
sea00900  Terpenoid backbone biosynthesis
sea00920  Sulfur metabolism
KO pathway
ko00270   
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