KEGG   PATHWAY: btk00270
Entry
btk00270                    Pathway                                
Name
Cysteine and methionine metabolism - Bacillus thuringiensis serovar konkukian 97-27
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
btk00270  Cysteine and methionine metabolism
btk00270

Module
btk_M00017  Methionine biosynthesis, aspartate => homoserine => methionine [PATH:btk00270]
btk_M00021  Cysteine biosynthesis, serine => cysteine [PATH:btk00270]
btk_M00034  Methionine salvage pathway [PATH:btk00270]
btk_M00609  Cysteine biosynthesis, methionine => cysteine [PATH:btk00270]
Other DBs
GO: 0006534 0006555
Organism
Bacillus thuringiensis serovar konkukian 97-27 [GN:btk]
Gene
BT9727_0085  cysE; serine O-acetyltransferase [KO:K00640] [EC:2.3.1.30]
BT9727_4948  cysE; serine acetyltransferase [KO:K00640] [EC:2.3.1.30]
BT9727_0063  cysK; cysteine synthase (cysteine synthase A) (O-acetylserine sulfhydrylase) [KO:K01738] [EC:2.5.1.47]
BT9727_1678  cysK; cysteine synthase A [KO:K01738] [EC:2.5.1.47]
BT9727_4105  metC; cystathionine beta-lyase [KO:K17217] [EC:4.4.1.1 4.4.1.2]
BT9727_3998  metC; cystathionine beta-lyase [KO:K01760] [EC:4.4.1.13]
BT9727_4616  patB; aminotransferase, classes I and II [KO:K14155] [EC:4.4.1.13]
BT9727_4106  cysM; cysteine synthase [KO:K17216] [EC:2.5.1.134]
BT9727_3995  metH; 5-methyltetrahydrofolate--homocysteine methyltransferase [KO:K00548] [EC:2.1.1.13]
BT9727_3996  metE; 5-methyltetrahydropteroyltriglutamate--homocysteine S-methyltransferase [KO:K24042] [EC:2.1.1.13 1.5.1.54]
BT9727_3744  metE; 5-methyltetrahydropteroyltriglutamate--homocysteine methyltransferase [KO:K00549] [EC:2.1.1.14]
BT9727_4500  metK; S-adenosylmethionine synthetase (methionine adenosyltransferase) [KO:K00789] [EC:2.5.1.6]
BT9727_4891  speD; adenosylmethionine decarboxylase (S-adenosylmethionine decarboxylase proenzyme) [KO:K01611] [EC:4.1.1.50]
BT9727_4312  speD; S-adenosylmethionine decarboxylase proenzyme [KO:K01611] [EC:4.1.1.50]
BT9727_4890  speE; spermidine synthase [KO:K00797] [EC:2.5.1.16]
BT9727_5051  speE; spermidine synthase; putrescine aminopropyltransferase [KO:K00797] [EC:2.5.1.16]
BT9727_1702  pfs; phosphorylase; S-adenosylhomocysteine nucleosidase [KO:K01243] [EC:3.2.2.9]
BT9727_2625  pfs; MTA/SAH nucleosidase, C-terminal region (5-methylthioadenosine nucleosidase/S-adenosylhomocysteine nucleosidase, C-terminal region) [KO:K01243] [EC:3.2.2.9]
BT9727_2626  pfs; MTA/SAH nucleosidase, N-terminal region (5-methylthioadenosine nucleosidase/S-adenosylhomocysteine nucleosidase, N-terminal region) [KO:K01243] [EC:3.2.2.9]
BT9727_2344  pfs; phosphorylase; S-adenosylhomocysteine nucleosidase [KO:K01243] [EC:3.2.2.9]
BT9727_4107  mtnA; MTA/SAH nucleosidase (5'-methylthioadenosine nucleosidase/S-adenosylhomocysteine nucleosidase) [KO:K01243] [EC:3.2.2.9]
BT9727_0315  mtrK; probable 5-methylthioribose kinase [KO:K00899] [EC:2.7.1.100]
BT9727_3775  mtnK; 5-methylthioribose kinase [KO:K00899] [EC:2.7.1.100]
BT9727_3643  conserved hypothetical protein [KO:K05810] [EC:2.4.2.1 2.4.2.28 3.5.4.4]
BT9727_1707  chlorohydrolase/deaminase family protein [KO:K12960] [EC:3.5.4.31 3.5.4.28]
BT9727_3774  translation initiation factor, aIF-2BI family [KO:K08963] [EC:5.3.1.23]
BT9727_0316  protein-synthesizing GTPase (translation initiation factor, IF-2B) [KO:K08963] [EC:5.3.1.23]
BT9727_3780  class II aldolase/adducin domain protein [KO:K08964] [EC:4.2.1.109]
BT9727_1221  class II aldolase/adducin domain protein [KO:K08964] [EC:4.2.1.109]
BT9727_3778  rbcL; ribulose-bisphosphate carboxylase (ribulose 1,5-bisphosphate carboxylase, large subunit) [KO:K08965] [EC:5.3.2.5]
BT9727_3779  hydrolase, haloacid dehalogenase-like family [KO:K08966] [EC:3.1.3.87]
BT9727_3781  possible 5-methylthio-3-oxo-1-penten-1,2-diol dioxygenase [KO:K08967] [EC:1.13.11.53 1.13.11.54]
BT9727_3777  aminotransferase, classes I and II [KO:K08969] [EC:2.6.1.117]
BT9727_4388  megL; methionine gamma-lyase [KO:K01761] [EC:4.4.1.11]
BT9727_4387  conserved hypothetical protein, possible GAF domain-containing protein [KO:K08968] [EC:1.8.4.14]
BT9727_0840  ddeI; modification methylase DdeI; possible cytosine-specific methyltransferase [KO:K00558] [EC:2.1.1.37]
BT9727_0841  hpaII; modification methylase HpaII (Cytosine-specific methyltransferase HpaII) [KO:K00558] [EC:2.1.1.37]
pBT9727_0058  phage-related DNA methylase, N-terminal region [KO:K00558] [EC:2.1.1.37]
BT9727_4108  conserved hypothetical protein [KO:K17462] [EC:2.1.1.-]
BT9727_4525  luxS; autoinducer-2 production protein [KO:K07173] [EC:4.4.1.21]
BT9727_1658  dapG; aspartokinase [KO:K00928] [EC:2.7.2.4]
BT9727_3541  dapG; aspartate kinase [KO:K00928] [EC:2.7.2.4]
BT9727_2228  asd; aspartate-semialdehyde dehydrogenase [KO:K00133] [EC:1.2.1.11]
BT9727_3542  asd; aspartate-semialdehyde dehydrogenase [KO:K00133] [EC:1.2.1.11]
BT9727_1799  hom; homoserine dehydrogenase [KO:K00003] [EC:1.1.1.3]
BT9727_2388  hom; homoserine dehydrogenase [KO:K00003] [EC:1.1.1.3]
BT9727_5085  hom; homoserine dehydrogenase [KO:K00003] [EC:1.1.1.3]
BT9727_5086  metA; homoserine O-succinyltransferase [KO:K00651] [EC:2.3.1.46 2.3.1.31]
BT9727_4463  metX; homoserine O-acetyltransferase [KO:K00641] [EC:2.3.1.31 2.3.1.46]
BT9727_3997  metC; cystathionine beta-lyase [KO:K01739] [EC:2.5.1.48]
BT9727_5087  cysD; O-acetylhomoserine sulfhydrylase [KO:K01740] [EC:2.5.1.49]
BT9727_1690  ilvE; branched-chain amino acid aminotransferase [KO:K00826] [EC:2.6.1.42]
BT9727_1280  ilvE; branched-chain amino acid aminotransferase [KO:K00826] [EC:2.6.1.42]
BT9727_1426  aspB; aspartate aminotransferase [KO:K00812] [EC:2.6.1.1]
BT9727_1455  thiosulfate sulfurtransferase [KO:K01011] [EC:2.8.1.1 2.8.1.2]
BT9727_1763  ldh; L-lactate dehydrogenase [KO:K00016] [EC:1.1.1.27]
BT9727_4600  ldhP; L-lactate dehydrogenase [KO:K00016] [EC:1.1.1.27]
BT9727_4708  ldhB; L-lactate dehydrogenase [KO:K00016] [EC:1.1.1.27]
BT9727_4485  aspartate racemase [KO:K25316] [EC:5.1.1.10]
BT9727_2007  racD; aspartate racemase [KO:K25316] [EC:5.1.1.10]
BT9727_2992  1-aminocyclopropane-1-carboxylate deaminase [KO:K05396] [EC:4.4.1.15]
BT9727_4321  mdh; malate dehydrogenase [KO:K00024] [EC:1.1.1.37]
BT9727_3885  sdhB; L-serine dehydratase, beta subunit [KO:K01752] [EC:4.3.1.17]
BT9727_3884  sdhA; possible L-serine dehydratase, alpha subunit [KO:K01752] [EC:4.3.1.17]
BT9727_3022  serA; D-3-phosphoglycerate dehydrogenase [KO:K00058] [EC:1.1.1.95 1.1.1.399]
BT9727_3023  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
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
btk00010  Glycolysis / Gluconeogenesis
btk00250  Alanine, aspartate and glutamate metabolism
btk00260  Glycine, serine and threonine metabolism
btk00290  Valine, leucine and isoleucine biosynthesis
btk00430  Taurine and hypotaurine metabolism
btk00480  Glutathione metabolism
btk00620  Pyruvate metabolism
btk00640  Propanoate metabolism
btk00770  Pantothenate and CoA biosynthesis
btk00900  Terpenoid backbone biosynthesis
btk00920  Sulfur metabolism
KO pathway
ko00270   
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