Methionine metabolism leading to sulfur amino acids and related disorders (Homo sapiens)
From WikiPathways
Description
This pathway visualises the conversion of methionine to inorganic sulphates (involving the formation of homocysteine, a toxic intermediate also related to MTHFR deficiency [1]). 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)).
Quality Tags
Ontology Terms
Bibliography
- Nenad Blau, Marinus Duran K, Michael Gibson, Carlo Dionisi-Vici; ''Physician's Guide to the Diagnosis, Treatment, and Follow-Up of Inherited Metabolic Diseases''; Springer-Verlag Berlin Heidelberg, 2014
- Linnebank M, Lagler F, Muntau AC, Röschinger W, Olgemöller B, Fowler B, Koch HG; ''Methionine adenosyltransferase (MAT) I/III deficiency with concurrent hyperhomocysteinaemia: two novel cases.''; J Inherit Metab Dis, 2005 PubMed Europe PMC Scholia
- Griffith OW; ''Cysteinesulfinate metabolism. altered partitioning between transamination and decarboxylation following administration of beta-methyleneaspartate.''; J Biol Chem, 1983 PubMed Europe PMC Scholia
History
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External references
DataNodes
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Name | Type | Database reference | Comment |
---|---|---|---|
ADKD | GeneProduct | ENSG00000156110 (Ensembl) | aka Adenosine kinase |
AHCY | Protein | P23526 (Uniprot-TrEMBL) | S-adenosylhomocysteine hydrolase |
AMP | Metabolite | CHEBI:16027 (ChEBI) | |
ATP | Metabolite | CHEBI:15422 (ChEBI) | |
Adenosine | Metabolite | CHEBI:16335 (ChEBI) | |
BMT | Protein | E5RJH0 (Uniprot-TrEMBL) | aka Betaine--homocysteine S-methyltransferase 1 |
Beta-sulfinyl pyruvate | Metabolite | HMDB0002332 (HMDB) | |
Betaine | Metabolite | CHEBI:17750 (ChEBI) | |
Build proteins | Pathway | WP3580 (WikiPathways) | |
CBS | GeneProduct | ENSG00000160200 (Ensembl) | cystathioniune beta-synthase |
CSAT | Protein | 2.6.1.- (Enzyme Nomenclature) |
|
CTH | GeneProduct | ENSG00000116761 (Ensembl) | cystathioniune gamma-lyase |
CyD | Protein | Q16878 (Uniprot-TrEMBL) | Cysteine dioxygenase type 1 |
CySD | Protein | Q9Y600 (Uniprot-TrEMBL) | Cysteine sulfinic acid decarboxylase |
Cystathionine | Metabolite | CHEBI:17482 (ChEBI) | |
Cysteine sulfinic acid | Metabolite | CHEBI:61085 (ChEBI) | aka 3-sulfino-L-alanine |
Cysteine | Metabolite | CHEBI:15356 (ChEBI) | |
Diphosphate ion | Metabolite | Q290828 (Wikidata) | |
GNMT | Protein | Q14749 (Uniprot-TrEMBL) | |
Glycine | Metabolite | HMDB0000123 (HMDB) | |
H2O | Metabolite | CHEBI:15377 (ChEBI) | |
HTOx | Protein | 1.8.1.3 (Enzyme Nomenclature) |
|
Homocysteine | Metabolite | CHEBI:17230 (ChEBI) | |
Hypotaurine | Metabolite | CHEBI:16668 (ChEBI) | |
MAT1A | Protein | Q00266 (Uniprot-TrEMBL) | |
MAT2A | Protein | B4DEX8 (Uniprot-TrEMBL) | |
MAT2B | Protein | H7C0X7 (Uniprot-TrEMBL) | |
MS | Protein | Q99707 (Uniprot-TrEMBL) | 5-methyltetrahydrofolate-homocysteine methyltransferase |
Methionine adenosyltransferase I/III | Protein | 2.5.1.6 (Enzyme Nomenclature) | |
Methionine | Metabolite | CHEBI:16643 (ChEBI) | |
Methyl- cobalamin | Metabolite | CHEBI:28115 (ChEBI) | "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 |
Methylation on
DNA, RNA, hormones, lipids, proteins, creatine-P, etc. | Pathway | WP704 (WikiPathways) | |
Phosphate ion | Metabolite | Q177811 (Wikidata) | |
S-Adenosylhomocysteine | Metabolite | CHEBI:16680 (ChEBI) | |
S-Adenosylmethionine | Metabolite | CHEBI:67040 (ChEBI) | |
SUOX | GeneProduct | 1.8.3.1 (Enzyme Nomenclature) | Sulfite oxidase |
Sarcosine | Metabolite | CHEBI:15611 (ChEBI) | |
Sulfate | Metabolite | HMDB0001448 (HMDB) | |
Sulfite | Metabolite | CHEBI:26823 (ChEBI) | |
Sulphocysteine | Metabolite | CHEBI:27891 (ChEBI) | |
Taurine | Metabolite | CHEBI:15891 (ChEBI) | |
Vit. B12 pathway | Pathway | WP4271 (WikiPathways) | |
X-MT | Protein | S-adenosylmethionine-dependent transmethylation enzymes |
Annotated Interactions
Source | Target | Type | Database reference | Comment |
---|---|---|---|---|
Cysteine sulfinic acid | Hypotaurine | mim-conversion | 16878 (Rhea) | |
Cysteine | Cysteine sulfinic acid | mim-conversion | 20442 (Rhea) | |
Homocysteine | mim-conversion | 11173 (Rhea) |