ethanol degradation
gomodel:YeastPathways_PWY3O-4300
Ethanol degradation in Saccharomyces cerevisiae S288C uses alcohol dehydrogenase, aldehyde dehydrogenase, and acetyl-CoA ligase activities to oxidize ethanol through acetaldehyde and acetate to acetyl-CoA.
- Pathway type
- alcohol degradation
- Organism scope
Pathway network
32 nodes · 68 asserted directed edges
Arrows show recorded subject → object relationships, not necessarily metabolic flow. Select a node for details or an arrow for evidence. Scroll, zoom or find a node to explore.
- Reaction / activity
- Chemical / cofactor
- Protein / complex
- Cell / process context
- Solid arrow: mechanistic relation
- Dashed arrow: membership, location or cofactor relation
Components and activities
| Node | Kind or role | Source direction |
|---|---|---|
Saccharomyces cerevisiae S288CNCBITaxon:559292 | taxon | |
ACS2 ScerSGD:S000004143 | protein | |
hydronCHEBI:15378 | small molecule | |
acetaldehydeCHEBI:15343 | small molecule | |
ADH2 ScerSGD:S000004918 | protein | |
NADH(2-)CHEBI:57945 | small molecule | |
acetateCHEBI:30089 | small molecule | |
ethanol catabolic processGO:0006068 | biological process | |
diphosphoric acidCHEBI:29888 | small molecule | |
ethanolCHEBI:16236 | small molecule | |
NAD(1-)CHEBI:57540 | small molecule | |
acetyl-CoA(4-)CHEBI:57288 | small molecule | |
adenosine 5'-monophosphate(2-)CHEBI:456215 | small molecule | |
cytosolGO:0005829 | cellular component | |
ATP(4-)CHEBI:30616 | small molecule | |
coenzyme A(4-)CHEBI:57287 | small molecule | |
ALD2 ScerSGD:S000004780 | protein | |
ADH1 ScerSGD:S000005446 | protein | |
ADH3 ScerSGD:S000004688 | protein | |
waterCHEBI:15377 | small molecule | |
ACS1 ScerSGD:S000000050 | protein | |
cytoplasmGO:0005737 | cellular component | |
nucleusGO:0005634 | cellular component | |
mitochondrionGO:0005739 | cellular component | |
mitochondrial matrixGO:0005759 | cellular component | |
mitochondrial inner membraneGO:0005743 | cellular component | |
zinc(2+)CHEBI:29105 | cofactor | |
acetate + ATP + coenzyme A -> acetyl-CoA + AMP + diphosphategomodel:ACETATE--COA-LIGASE-RXN | molecular activity | |
ethanol + NAD+ <=> acetaldehyde + NADH + H+gomodel:ALCOHOL-DEHYDROG-RXN | molecular activity | |
acetaldehyde + NAD+ + H2O -> acetate + NADH + 2 H+gomodel:RXN66-3 | molecular activity | |
acetyl-CoA synthetase activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003293 | molecular activity | |
alcohol dehydrogenase (NAD+) activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003312 | molecular activity | |
alcohol dehydrogenase (NAD+) activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003332 | molecular activity |
Mechanistic edges
| Subject | Predicate and description | Object | Evidence |
|---|---|---|---|
ACS2 ScerSGD:S000004143 | enables | acetyl-CoA synthetase activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003293 |
|
ethanol + NAD+ <=> acetaldehyde + NADH + H+gomodel:ALCOHOL-DEHYDROG-RXN | has_output | acetaldehydeCHEBI:15343 |
|
ADH2 ScerSGD:S000004918 | enables | alcohol dehydrogenase (NAD+) activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003312 |
|
acetaldehyde + NAD+ + H2O -> acetate + NADH + 2 H+gomodel:RXN66-3 | provides_input_for | acetyl-CoA synthetase activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003293 |
|
alcohol dehydrogenase (NAD+) activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003332 | has_output | hydronCHEBI:15378 |
|
ethanol + NAD+ <=> acetaldehyde + NADH + H+gomodel:ALCOHOL-DEHYDROG-RXN | provides_input_for | acetaldehyde + NAD+ + H2O -> acetate + NADH + 2 H+gomodel:RXN66-3 |
|
acetaldehyde + NAD+ + H2O -> acetate + NADH + 2 H+gomodel:RXN66-3 | has_output | NADH(2-)CHEBI:57945 |
|
acetaldehyde + NAD+ + H2O -> acetate + NADH + 2 H+gomodel:RXN66-3 | has_output | acetateCHEBI:30089 |
|
acetate + ATP + coenzyme A -> acetyl-CoA + AMP + diphosphategomodel:ACETATE--COA-LIGASE-RXN | has_input | acetateCHEBI:30089 |
|
acetate + ATP + coenzyme A -> acetyl-CoA + AMP + diphosphategomodel:ACETATE--COA-LIGASE-RXN | has_output | diphosphoric acidCHEBI:29888 |
|
alcohol dehydrogenase (NAD+) activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003332 | has_input | ethanolCHEBI:16236 |
|
alcohol dehydrogenase (NAD+) activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003332 | has_input | NAD(1-)CHEBI:57540 |
|
acetaldehyde + NAD+ + H2O -> acetate + NADH + 2 H+gomodel:RXN66-3 | has_input | NAD(1-)CHEBI:57540 |
|
alcohol dehydrogenase (NAD+) activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003312 | has_output | hydronCHEBI:15378 |
|
acetaldehyde + NAD+ + H2O -> acetate + NADH + 2 H+gomodel:RXN66-3 | has_output | hydronCHEBI:15378 |
|
ethanol + NAD+ <=> acetaldehyde + NADH + H+gomodel:ALCOHOL-DEHYDROG-RXN | part_of | ethanol catabolic processGO:0006068 |
|
alcohol dehydrogenase (NAD+) activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003312 | has_output | acetaldehydeCHEBI:15343 |
|
ethanol + NAD+ <=> acetaldehyde + NADH + H+gomodel:ALCOHOL-DEHYDROG-RXN | has_input | NAD(1-)CHEBI:57540 |
|
acetyl-CoA synthetase activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003293 | has_output | acetyl-CoA(4-)CHEBI:57288 |
|
acetate + ATP + coenzyme A -> acetyl-CoA + AMP + diphosphategomodel:ACETATE--COA-LIGASE-RXN | has_output | adenosine 5'-monophosphate(2-)CHEBI:456215 |
|
acetaldehyde + NAD+ + H2O -> acetate + NADH + 2 H+gomodel:RXN66-3 | provides_input_for | acetate + ATP + coenzyme A -> acetyl-CoA + AMP + diphosphategomodel:ACETATE--COA-LIGASE-RXN |
|
acetate + ATP + coenzyme A -> acetyl-CoA + AMP + diphosphategomodel:ACETATE--COA-LIGASE-RXN | has_output | acetyl-CoA(4-)CHEBI:57288 |
|
alcohol dehydrogenase (NAD+) activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003332 | part_of | ethanol catabolic processGO:0006068 |
|
acetaldehyde + NAD+ + H2O -> acetate + NADH + 2 H+gomodel:RXN66-3 | has_input | acetaldehydeCHEBI:15343 |
|
acetate + ATP + coenzyme A -> acetyl-CoA + AMP + diphosphategomodel:ACETATE--COA-LIGASE-RXN | occurs_in | cytosolGO:0005829 |
|
acetaldehyde + NAD+ + H2O -> acetate + NADH + 2 H+gomodel:RXN66-3 | part_of | ethanol catabolic processGO:0006068 |
|
acetyl-CoA synthetase activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003293 | has_input | ATP(4-)CHEBI:30616 |
|
acetate + ATP + coenzyme A -> acetyl-CoA + AMP + diphosphategomodel:ACETATE--COA-LIGASE-RXN | has_input | coenzyme A(4-)CHEBI:57287 |
|
acetyl-CoA synthetase activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003293 | has_output | diphosphoric acidCHEBI:29888 |
|
alcohol dehydrogenase (NAD+) activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003332 | has_output | acetaldehydeCHEBI:15343 |
|
acetate + ATP + coenzyme A -> acetyl-CoA + AMP + diphosphategomodel:ACETATE--COA-LIGASE-RXN | has_input | ATP(4-)CHEBI:30616 |
|
ethanol + NAD+ <=> acetaldehyde + NADH + H+gomodel:ALCOHOL-DEHYDROG-RXN | has_output | NADH(2-)CHEBI:57945 |
|
ethanol + NAD+ <=> acetaldehyde + NADH + H+gomodel:ALCOHOL-DEHYDROG-RXN | has_input | ethanolCHEBI:16236 |
|
acetyl-CoA synthetase activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003293 | has_input | acetateCHEBI:30089 |
|
ALD2 ScerSGD:S000004780 | enables | acetaldehyde + NAD+ + H2O -> acetate + NADH + 2 H+gomodel:RXN66-3 |
|
alcohol dehydrogenase (NAD+) activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003332 | has_output | NADH(2-)CHEBI:57945 |
|
alcohol dehydrogenase (NAD+) activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003312 | occurs_in | cytosolGO:0005829 |
|
acetate + ATP + coenzyme A -> acetyl-CoA + AMP + diphosphategomodel:ACETATE--COA-LIGASE-RXN | part_of | ethanol catabolic processGO:0006068 |
|
acetyl-CoA synthetase activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003293 | occurs_in | cytosolGO:0005829 |
|
alcohol dehydrogenase (NAD+) activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003332 | provides_input_for | acetaldehyde + NAD+ + H2O -> acetate + NADH + 2 H+gomodel:RXN66-3 |
|
ADH1 ScerSGD:S000005446 | enables | ethanol + NAD+ <=> acetaldehyde + NADH + H+gomodel:ALCOHOL-DEHYDROG-RXN |
|
ADH3 ScerSGD:S000004688 | enables | alcohol dehydrogenase (NAD+) activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003332 |
|
ethanol + NAD+ <=> acetaldehyde + NADH + H+gomodel:ALCOHOL-DEHYDROG-RXN | has_output | hydronCHEBI:15378 |
|
alcohol dehydrogenase (NAD+) activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003312 | provides_input_for | acetaldehyde + NAD+ + H2O -> acetate + NADH + 2 H+gomodel:RXN66-3 |
|
alcohol dehydrogenase (NAD+) activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003312 | has_input | ethanolCHEBI:16236 |
|
alcohol dehydrogenase (NAD+) activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003312 | has_output | NADH(2-)CHEBI:57945 |
|
acetaldehyde + NAD+ + H2O -> acetate + NADH + 2 H+gomodel:RXN66-3 | has_input | waterCHEBI:15377 |
|
alcohol dehydrogenase (NAD+) activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003312 | has_input | NAD(1-)CHEBI:57540 |
|
ethanol + NAD+ <=> acetaldehyde + NADH + H+gomodel:ALCOHOL-DEHYDROG-RXN | occurs_in | cytosolGO:0005829 |
|
ACS1 ScerSGD:S000000050 | enables | acetate + ATP + coenzyme A -> acetyl-CoA + AMP + diphosphategomodel:ACETATE--COA-LIGASE-RXN |
|
alcohol dehydrogenase (NAD+) activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003312 | part_of | ethanol catabolic processGO:0006068 |
|
acetyl-CoA synthetase activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003293 | has_input | coenzyme A(4-)CHEBI:57287 |
|
acetyl-CoA synthetase activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003293 | part_of | ethanol catabolic processGO:0006068 |
|
acetaldehyde + NAD+ + H2O -> acetate + NADH + 2 H+gomodel:RXN66-3 | occurs_in | cytosolGO:0005829 |
|
acetyl-CoA synthetase activitygomodel:YeastPathways_PWY3O-4300/6a4c244800003293 | has_output | adenosine 5'-monophosphate(2-)CHEBI:456215 |
|
ACS2 ScerSGD:S000004143 | located_in Physical protein location from reviewed UniProt. evidence code not specified by source Source qualification: Predominantly nuclear | cytoplasmGO:0005737 |
|
ACS2 ScerSGD:S000004143 | located_in Physical protein location from reviewed UniProt. evidence code not specified by source Source qualification: Predominantly nuclear | nucleusGO:0005634 |
|
ADH2 ScerSGD:S000004918 | located_in Physical protein location from reviewed UniProt. ECO:0000269 (PubMed:14562095); ECO:0000269 (PubMed:2937632) | cytoplasmGO:0005737 |
|
ALD2 ScerSGD:S000004780 | located_in Physical protein location from reviewed UniProt. ECO:0000269 (PubMed:11914276) | cytoplasmGO:0005737 |
|
ADH1 ScerSGD:S000005446 | located_in Physical protein location from reviewed UniProt. ECO:0000269 (PubMed:2937632) | cytoplasmGO:0005737 |
|
ADH3 ScerSGD:S000004688 | located_in Physical protein location from reviewed UniProt. ECO:0000269 (PubMed:1101965); ECO:0000269 (PubMed:2188098); ECO:0000269 (PubMed:2943982) | mitochondrial matrixGO:0005759 |
|
ADH3 ScerSGD:S000004688 | located_in Physical protein location from reviewed UniProt. ECO:0000269 (PubMed:2937632) | mitochondrial inner membraneGO:0005743 |
|
ACS1 ScerSGD:S000000050 | located_in Physical protein location from reviewed UniProt. evidence code not specified by source | cytoplasmGO:0005737 |
|
ACS1 ScerSGD:S000000050 | located_in Physical protein location from reviewed UniProt. evidence code not specified by source | mitochondrionGO:0005739 |
|
ACS1 ScerSGD:S000000050 | located_in Physical protein location from reviewed UniProt. evidence code not specified by source | nucleusGO:0005634 |
|
ADH2 ScerSGD:S000004918 | has_cofactor UniProtKB reviewed (Swiss-Prot) annotation. UniProt evidence: ECO:0000250 (UniProtKB:P00330) Binds 2 Zn(2+) ions per subunit. UniProt note evidence: ECO:0000250 (UniProtKB:P00330) | zinc(2+)CHEBI:29105 |
|
ADH1 ScerSGD:S000005446 | has_cofactor UniProtKB reviewed (Swiss-Prot) annotation. UniProt evidence: ECO:0000269 (PubMed:25157460); ECO:0000269 (PubMed:26743849) Binds 2 Zn(2+) ions per subunit. UniProt note evidence: ECO:0000269 (PubMed:25157460); ECO:0000269 (PubMed:26743849) | zinc(2+)CHEBI:29105 |
|
ADH3 ScerSGD:S000004688 | has_cofactor UniProtKB reviewed (Swiss-Prot) annotation. UniProt evidence: ECO:0000250 (UniProtKB:P00330) Binds 2 Zn(2+) ions per subunit. UniProt note evidence: ECO:0000250 (UniProtKB:P00330) | zinc(2+)CHEBI:29105 |
|
References
gomodel:YeastPathways_PWY3O-4300SGD GO-CAM ethanol degradation - imported from: Saccharomyces Genome Database (source version: Pinned Noctua JSON archive; model date 2026-07-15; member ./YeastPathways_PWY3O-4300.json)UniProtKB:P52910Reviewed UniProtKB P52910 location annotations (source version: UniProt release 2026_03)UniProtKB:P00331Reviewed UniProtKB P00331 location annotations (source version: UniProt release 2026_03)UniProtKB:P10127Reviewed UniProtKB P10127 location annotations (source version: UniProt release 2026_03)UniProtKB:P47771Reviewed UniProtKB P47771 location annotations (source version: UniProt release 2026_03)UniProtKB:P00330Reviewed UniProtKB P00330 location annotations (source version: UniProt release 2026_03)UniProtKB:P07246Reviewed UniProtKB P07246 location annotations (source version: UniProt release 2026_03)UniProtKB:Q01574Reviewed UniProtKB Q01574 location annotations (source version: UniProt release 2026_03)UniProtKB:P38113Reviewed UniProtKB P38113 location annotations (source version: UniProt release 2026_03)
Curation history
- Codex; review-causal-graph; Reviewed every native GO-CAM fact; preserved precise input/output, causal, location, membership and complex-part relations with traceable structured source evidence. Kept distinct generic physical instances and recorded source-scope exclusions in the cohort review ledger.
- Codex; review-catalytic-function; Reconciled native GO-CAM chemistry with independently reviewed enzyme specificity, direction, physiological scope and source cautions; superseded facts remain in the function review ledger.
- Codex
- EDIT — Audit causal activity compartments and preserve scoped protein location evidence
Reviewed all 8 activity location assignments and 8 mapped physical proteins against reviewed S288C UniProt release2026_03 location/function/caution batch SHA256 95f72dcc644358c480e0e59f996cf88533558b5fa4256460a030e0a1eaf9678d. Added 12 independently supported location edges and quarantined 2 generic cytosol source assertions. Mapped physical protein locations via exact SGD cross-references; retained source ECO grades, molecular form and conditional notes. Physical protein location alone never generates activity location. Explicitly inspected functional assertions support bounded activity projections. Every original activity location and exclusion is recorded in reports/causal_graph_review/gocam-location-review.json. No independent location annotation is treated as an evidence gap, not a negative result. Cytoplasm is not narrowed to cytosol. Microsome fractions are not projected as in-vivo organelles. Semantic validation passed all85 records;4 independent source-role acceptance tests passed.
- EDIT — Audit causal activity compartments and preserve scoped protein location evidence