Methionine metabolism leading to sulfur amino acids and related disorders (WP4292)

Homo sapiens

This pathway visualises the conversion of methionine to inorganic sulphates (involving the formation of homocysteine, a toxic intermediate also related to MTHFR deficiency [https://www.wikipathways.org/index.php/Pathway:WP4288]). Methionine, an essential amino acid, is taken in from diet and can be created from breaking down proteins. This pathway was inspired by Chapter 3 of the book of Blau (ISBN 3642403360 (978-3642403361)).
last edited

Authors

Hermann Ritter , Egon Willighagen , Kristina Hanspers , Denise Slenter , Elisson nl , Irene Hemel , Friederike Ehrhart , Eric Weitz , and Finterly Hu

Cited In

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Organism

Homo sapiens

Communities

Inborn Errors of Metabolism (IEM) Pathways Rare Diseases

Annotations

Disease Ontology: glycine N-methyltransferase deficiency hypermethioninemia with deficiency of S-adenosylhomocysteine hydrolase homocystinuria isolated sulfite oxidase deficiency hypermethioninemia due to adenosine kinase deficiency cystathioninuria hypermethioninemia

Pathway Ontology: disease pathway cystathioninuria pathway hypermethioninemia pathway methionine degradation pathway sulfite oxidase deficiency pathway glycine N-methyltransferase deficiency pathway altered metal homeostasis pathway hypermethioninemia pathway homocystinuria pathway cysteine and methionine metabolic pathway

Participants

Label Type Compact Identifier Comment
Methionine Metabolite chebi:16643
Sulphocysteine Metabolite chebi:27891
Cystathionine Metabolite chebi:17482
Sulfate Metabolite hmdb:HMDB0001448
Taurine Metabolite chebi:15891
Sulfite Metabolite chebi:26823
S-Adenosylmethionine Metabolite chebi:67040
Cysteine Metabolite chebi:15356
Adenosine Metabolite chebi:16335
S-Adenosylhomocysteine Metabolite chebi:16680
Methyl-cobalamin Metabolite chebi:28115 'This vitamer is one of two active coenzymes used by vitamin B12-dependent enzymes and is the specific vitamin B12 form used by 5-methyltetrahydrofolate-homocysteine methyltransferase (MTR), also known as methionine synthase' https://en.wikipedia.org/wiki/Methylcobalamin
Hypotaurine Metabolite chebi:16668
Glycine Metabolite hmdb:HMDB0000123
Betaine Metabolite chebi:17750
Cysteine sulfinic acid Metabolite chebi:61085 aka 3-sulfino-L-alanine
ATP Metabolite chebi:15422
AMP Metabolite chebi:16027
Sarcosine Metabolite chebi:15611
Diphosphate ion Metabolite wikidata:Q290828
Beta-Sulfinyl pyruvate Metabolite hmdb:HMDB0002332
Homocysteine Metabolite chebi:17230
Phosphate ion Metabolite wikidata:Q177811
Methyl-cobalamin Metabolite chebi:28115 'This vitamer is one of two active coenzymes used by vitamin B12-dependent enzymes and is the specific vitamin B12 form used by 5-methyltetrahydrofolate-homocysteine methyltransferase (MTR), also known as methionine synthase' https://en.wikipedia.org/wiki/Methylcobalamin
H2O Metabolite chebi:15377
ADKD GeneProduct ensembl:ENSG00000156110 aka Adenosine kinase
SUOX GeneProduct eccode:1.8.3.1 Sulfite oxidase
CBS GeneProduct ensembl:ENSG00000160200 cystathioniune beta-synthase
CTH GeneProduct ensembl:ENSG00000116761 cystathioniune gamma-lyase
CSAT Protein eccode:2.6.1.- cysteine sulphinate alpha-oxoglutarate aminotransferase
Not available in Uniprot (yet) 2021-01-17
Methionine adenosyltransferase I/III Protein eccode:2.5.1.6
CyD Protein uniprot:Q16878 Cysteine dioxygenase type 1
CySD Protein uniprot:Q9Y600 Cysteine sulfinic acid decarboxylase
HTOx Protein eccode:1.8.1.3 hypothaurine:NAD+ oxidoreductase
Two known cofactors: heme,Molybdenum
MS Protein uniprot:Q99707 5-methyltetrahydrofolate-homocysteine methyltransferase
BMT Protein uniprot:E5RJH0 aka Betaine--homocysteine S-methyltransferase 1
MAT2A Protein uniprot:B4DEX8
AHCY Protein uniprot:P23526 S-adenosylhomocysteine hydrolase
MAT1A Protein uniprot:Q00266
GNMT Protein uniprot:Q14749
MS Protein uniprot:Q99707 5-methyltetrahydrofolate-homocysteine methyltransferase
MAT2B Protein uniprot:H7C0X7

References

  1. Blau N, Duran M, Gibson KM, Dionisi-Vici C. Physician’s Guide to the Diagnosis, Treatment, and Follow-Up of Inherited Metabolic Diseases [Internet]. Springer; 2014. 867 p. Available from: https://books.google.com/books/about/Physician_s_Guide_to_the_Diagnosis_Treat.html?hl=&id=wJRBnwEACAAJ OpenLibrary Worldcat
  2. Griffith OW. Cysteinesulfinate metabolism. altered partitioning between transamination and decarboxylation following administration of beta-methyleneaspartate. J Biol Chem. 1983 Feb 10;258(3):1591–8. PubMed Europe PMC Scholia
  3. Linnebank M, Lagler F, Muntau AC, Röschinger W, Olgemöller B, Fowler B, et al. Methionine adenosyltransferase (MAT) I/III deficiency with concurrent hyperhomocysteinaemia: two novel cases. J Inherit Metab Dis. 2005;28(6):1167–8. PubMed Europe PMC Scholia