KEGG   PATHWAY: cnt00270
Entry
cnt00270                    Pathway                                
Name
Cysteine and methionine metabolism - Cedecea neteri SSMD04
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
cnt00270  Cysteine and methionine metabolism
cnt00270

Module
cnt_M00017  Methionine biosynthesis, aspartate => homoserine => methionine [PATH:cnt00270]
cnt_M00021  Cysteine biosynthesis, serine => cysteine [PATH:cnt00270]
cnt_M00034  Methionine salvage pathway [PATH:cnt00270]
cnt_M00035  Methionine degradation [PATH:cnt00270]
cnt_M00338  Cysteine biosynthesis, homocysteine + serine => cysteine [PATH:cnt00270]
Other DBs
GO: 0006534 0006555
Organism
Cedecea neteri SSMD04 [GN:cnt]
Gene
JT31_12080  cysE; serine acetyltransferase [KO:K00640] [EC:2.3.1.30]
JT31_07375  cysteine synthase [KO:K01738] [EC:2.5.1.47]
JT31_18635  cysteine synthase [KO:K01738] [EC:2.5.1.47]
JT31_00795  cystathionine beta-lyase [KO:K01758] [EC:4.4.1.1]
JT31_15365  cystathionine beta-lyase [KO:K01760] [EC:4.4.1.13]
JT31_15610  cystathionine beta-lyase [KO:K01760] [EC:4.4.1.13]
JT31_03030  bifunctional beta-cystathionase/maltose regulon regulatory protein [KO:K14155] [EC:4.4.1.13]
JT31_00800  cystathionine beta-lyase [KO:K01697] [EC:4.2.1.22]
JT31_11155  metH; B12-dependent methionine synthase [KO:K00548] [EC:2.1.1.13]
JT31_02475  5-methyltetrahydropteroyltriglutamate--homocysteine methyltransferase [KO:K00549] [EC:2.1.1.14]
JT31_11500  5-methyltetrahydropteroyltriglutamate--homocysteine methyltransferase [KO:K00549] [EC:2.1.1.14]
JT31_15825  S-adenosylmethionine synthetase [KO:K00789] [EC:2.5.1.6]
JT31_08645  S-adenosylmethionine decarboxylase [KO:K01611] [EC:4.1.1.50]
JT31_08640  spermidine synthase [KO:K00797] [EC:2.5.1.16]
JT31_20800  N-acyl homoserine lactone synthase CroI [KO:K22956] [EC:2.3.1.184]
JT31_08490  5'-methylthioadenosine nucleosidase [KO:K01243] [EC:3.2.2.9]
JT31_17995  methylthioribose kinase [KO:K00899] [EC:2.7.1.100]
JT31_17290  hypothetical protein [KO:K05810] [EC:2.4.2.1 2.4.2.28 3.5.4.4]
JT31_17990  methylthioribose-1-phosphate isomerase [KO:K08963] [EC:5.3.1.23]
JT31_04800  methylthioribulose-1-phosphate dehydratase [KO:K08964] [EC:4.2.1.109]
JT31_17975  haloacid dehalogenase [KO:K09880] [EC:3.1.3.77]
JT31_17980  acireductone dioxygenase [KO:K08967] [EC:1.13.11.53 1.13.11.54]
JT31_10985  aromatic amino acid aminotransferase [KO:K00832] [EC:2.6.1.57]
JT31_22030  Free methionine-R-sulfoxide reductase [KO:K08968] [EC:1.8.4.14]
JT31_21020  DNA cytosine methylase [KO:K00558] [EC:2.1.1.37]
JT31_09585  adenosylhomocysteinase [KO:K01251] [EC:3.13.2.1]
JT31_16900  S-ribosylhomocysteinase [KO:K07173] [EC:4.4.1.21]
JT31_11125  aspartate kinase [KO:K00928] [EC:2.7.2.4]
JT31_09135  thrA; aspartate kinase [KO:K12524] [EC:2.7.2.4 1.1.1.3]
JT31_11910  metL; aspartate kinase [KO:K12525] [EC:2.7.2.4 1.1.1.3]
JT31_13770  aspartate-semialdehyde dehydrogenase [KO:K00133] [EC:1.2.1.11]
JT31_11180  homoserine O-succinyltransferase [KO:K00651] [EC:2.3.1.46 2.3.1.31]
JT31_11915  cystathionine gamma-synthase [KO:K01739] [EC:2.5.1.48]
JT31_11765  branched-chain amino acid aminotransferase [KO:K00826] [EC:2.6.1.42]
JT31_16895  glutamate--cysteine ligase [KO:K01919] [EC:6.3.2.2]
JT31_15795  glutathione synthetase [KO:K01920] [EC:6.3.2.3]
JT31_05090  aromatic amino acid aminotransferase [KO:K00813] [EC:2.6.1.1]
JT31_00755  sulfurtransferase [KO:K01011] [EC:2.8.1.1 2.8.1.2]
JT31_17760  sseA; 3-mercaptopyruvate sulfurtransferase [KO:K01011] [EC:2.8.1.1 2.8.1.2]
JT31_16280  racemase [KO:K25316] [EC:5.1.1.10]
JT31_00765  pyridoxal-5'-phosphate-dependent protein [KO:K05396] [EC:4.4.1.15]
JT31_21230  cysteine desulfhydrase [KO:K05396] [EC:4.4.1.15]
JT31_14620  malate dehydrogenase [KO:K00024] [EC:1.1.1.37]
JT31_16480  serine dehydratase [KO:K01752] [EC:4.3.1.17]
JT31_22135  serine dehydratase [KO:K01752] [EC:4.3.1.17]
JT31_18610  cysM; cysteine synthase [KO:K12339] [EC:2.5.1.144]
JT31_04810  dihydrofolate reductase [KO:K00058] [EC:1.1.1.95 1.1.1.399]
JT31_15990  D-3-phosphoglycerate dehydrogenase [KO:K00058] [EC:1.1.1.95 1.1.1.399]
JT31_05190  3-phosphoserine/phosphohydroxythreonine 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
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
cnt00010  Glycolysis / Gluconeogenesis
cnt00250  Alanine, aspartate and glutamate metabolism
cnt00260  Glycine, serine and threonine metabolism
cnt00290  Valine, leucine and isoleucine biosynthesis
cnt00430  Taurine and hypotaurine metabolism
cnt00480  Glutathione metabolism
cnt00620  Pyruvate metabolism
cnt00640  Propanoate metabolism
cnt00770  Pantothenate and CoA biosynthesis
cnt00900  Terpenoid backbone biosynthesis
cnt00920  Sulfur metabolism
KO pathway
ko00270   
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