KEGG PATHWAY: fca00270

PATHWAY: fca00270

Entry

fca00270                    Pathway

Name

Cysteine and methionine metabolism - Felis catus (domestic cat)

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

fca00270

Cysteine and methionine metabolism

Module

fca_M00034

Methionine salvage pathway [PATH:fca00270]

fca_M00035

Methionine degradation [PATH:fca00270]

fca_M00338

Cysteine biosynthesis, homocysteine + serine => cysteine [PATH:fca00270]

Other DBs

GO:	0006534 0006555

Organism

Felis catus (domestic cat) [GN:fca]

Gene

100510798

DNMT3A; DNA (cytosine-5)-methyltransferase 3A [KO:K17398] [EC:2.1.1.37]

101080313

AHCYL1; S-adenosylhomocysteine hydrolase-like protein 1 isoform X3 [KO:K01251] [EC:3.13.2.1]

101080599

TAT; tyrosine aminotransferase isoform X2 [KO:K00815] [EC:2.6.1.5]

101081562

GCLM; glutamate--cysteine ligase regulatory subunit isoform X1 [KO:K11205]

101082171

KYAT3; kynurenine--oxoglutarate transaminase 3 [KO:K00816] [EC:2.6.1.7 4.4.1.13 2.6.1.64]

101082605

KYAT1; kynurenine--oxoglutarate transaminase 1 isoform X3 [KO:K00816] [EC:2.6.1.7 4.4.1.13 2.6.1.64]

101083006

GNMT; glycine N-methyltransferase [KO:K00552] [EC:2.1.1.20]

101083282

CTH; cystathionine gamma-lyase isoform X1 [KO:K01758] [EC:4.4.1.1]

101084109

AMD1; S-adenosylmethionine decarboxylase proenzyme isoform X1 [KO:K01611] [EC:4.1.1.50]

101084439

GSS; glutathione synthetase isoform X1 [KO:K21456] [EC:6.3.2.3]

101084845

MDH2; malate dehydrogenase, mitochondrial [KO:K00026] [EC:1.1.1.37]

101084933

BHMT2; S-methylmethionine--homocysteine S-methyltransferase BHMT2 isoform X1 [KO:K00547] [EC:2.1.1.10]

101085087

BCAT2; branched-chain-amino-acid aminotransferase, mitochondrial isoform X1 [KO:K00826] [EC:2.6.1.42]

101085155

GOT1; aspartate aminotransferase, cytoplasmic [KO:K14454] [EC:2.6.1.1]

101085179

BHMT; betaine--homocysteine S-methyltransferase 1 isoform X1 [KO:K00544] [EC:2.1.1.5]

101085195

AHCYL2; adenosylhomocysteinase 3 isoform X4 [KO:K01251] [EC:3.13.2.1]

101085366

MAT2A; S-adenosylmethionine synthase [KO:K00789] [EC:2.5.1.6]

101086030

LACC1; purine nucleoside phosphorylase LACC1 isoform X1 [KO:K05810] [EC:2.4.2.1 2.4.2.28 3.5.4.4]

101086386

AHCY; adenosylhomocysteinase isoform X1 [KO:K01251] [EC:3.13.2.1]

101086566

LDHAL6B; L-lactate dehydrogenase A-like 6B [KO:K00016] [EC:1.1.1.27]

101086784

MAT2B; methionine adenosyltransferase 2 subunit beta isoform X1 [KO:K00789] [EC:2.5.1.6]

101086928

SDS; L-serine dehydratase/L-threonine deaminase [KO:K17989] [EC:4.3.1.17 4.3.1.19]

101087835

ENOPH1; enolase-phosphatase E1 isoform X1 [KO:K09880] [EC:3.1.3.77]

101088505

PHGDH; D-3-phosphoglycerate dehydrogenase [KO:K00058] [EC:1.1.1.95 1.1.1.399]

101088961

MTAP; S-methyl-5'-thioadenosine phosphorylase isoform X2 [KO:K00772] [EC:2.4.2.28]

101089899

SDSL; serine dehydratase-like isoform X2 [KO:K17989] [EC:4.3.1.17 4.3.1.19]

101090160

GOT2; aspartate aminotransferase, mitochondrial [KO:K14455] [EC:2.6.1.1]

101090583

CDO1; cysteine dioxygenase type 1 [KO:K00456] [EC:1.13.11.20]

101090842

SMS; spermine synthase isoform X1 [KO:K00802] [EC:2.5.1.22]

101091882

MPST; 3-mercaptopyruvate sulfurtransferase isoform X1 [KO:K01011] [EC:2.8.1.1 2.8.1.2]

101092373

LDHB; L-lactate dehydrogenase B chain [KO:K00016] [EC:1.1.1.27]

101092926

DNMT3B; DNA (cytosine-5)-methyltransferase 3B isoform X5 [KO:K17399] [EC:2.1.1.37]

101093038

CBS; cystathionine beta-synthase isoform X4 [KO:K01697] [EC:4.2.1.22]

101093502

DNMT1; DNA (cytosine-5)-methyltransferase 1 isoform X4 [KO:K00558] [EC:2.1.1.37]

101095082

MRI1; LOW QUALITY PROTEIN: methylthioribose-1-phosphate isomerase [KO:K08963] [EC:5.3.1.23]

101095130

APIP; methylthioribulose-1-phosphate dehydratase [KO:K08964] [EC:4.2.1.109]

101095525

PSAT1; phosphoserine aminotransferase isoform X1 [KO:K00831] [EC:2.6.1.52]

101095994

TST; thiosulfate sulfurtransferase isoform X2 [KO:K01011] [EC:2.8.1.1 2.8.1.2]

101096568

GCLC; glutamate--cysteine ligase catalytic subunit [KO:K11204] [EC:6.3.2.2]

101097404

BCAT1; branched-chain-amino-acid aminotransferase, cytosolic isoform X1 [KO:K00826] [EC:2.6.1.42]

101097498

SRM; spermidine synthase [KO:K00797] [EC:2.5.1.16]

101097719

ADI1; 1,2-dihydroxy-3-keto-5-methylthiopentene dioxygenase [KO:K08967] [EC:1.13.11.53 1.13.11.54]

101097947

AGXT2; LOW QUALITY PROTEIN: alanine--glyoxylate aminotransferase 2, mitochondrial [KO:K00827] [EC:2.6.1.44 2.6.1.40]

101098604

[KO:K00016] [EC:1.1.1.27]

101099457

GOT1L1; putative aspartate aminotransferase, cytoplasmic 2 [KO:K14454] [EC:2.6.1.1]

101100248

LDHA; L-lactate dehydrogenase A chain isoform X2 [KO:K00016] [EC:1.1.1.27]

101100667

LDHC; L-lactate dehydrogenase C chain [KO:K00016] [EC:1.1.1.27]

101100683

IL4I1; L-amino-acid oxidase isoform X2 [KO:K03334] [EC:1.4.3.2]

101101166

MTR; methionine synthase isoform X3 [KO:K00548] [EC:2.1.1.13]

101101506

MAT1A; S-adenosylmethionine synthase isoform X1 [KO:K00789] [EC:2.5.1.6]

109492041

[KO:K00016] [EC:1.1.1.27]

111561629

[KO:K03334] [EC:1.4.3.2]

493924

MDH1; malate dehydrogenase, cytoplasmic [KO:K00025] [EC:1.1.1.37]

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

PMID:15102328

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

PMID:14551435

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

PMID:12022921

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

PMID:12670965

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

PMID:17169919

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

PMID:17030798

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

PMID:18625006

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

PMID:18391471

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

PMID:10613873

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

PMID:12644499

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

PMID:18520135

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

PMID:19270684

Authors