Acetogenesis
WikiPathways:WP5019
Acetogenesis is a carbon fixation and fermentation pathway in Acetobacterium woodii that reduces carbon dioxide to formate, carries the methyl branch through tetrahydrofolate intermediates, produces carbon monoxide on the carbonyl branch, and forms acetate through acetyl-CoA and acetyl phosphate. The corrinoid-mediated methyl transfer and carbonyl condensation are represented as one aggregate assembly step, with no free methyl-radical intermediate.
- Pathway type
- acetogenesis
- Organism scope
Pathway network
55 nodes · 60 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
- Solid arrow: mechanistic relation
- Dashed arrow: membership, location or cofactor relation
Components and activities
| Node | Kind or role | Source direction |
|---|---|---|
Acetobacterium woodiiNCBITaxon:33952 | taxon | |
formateCHEBI:15740 | small molecule | |
ATP(4-)CHEBI:30616 | small molecule | |
H(+)CHEBI:15378 | small molecule | |
5-methyltetrahydrofolateCHEBI:15641 | small molecule | |
FdhF1UniProtKB:H6LB59 | protein | |
Fhs1UniProtKB:H6LBX4 | protein | |
coenzyme ACHEBI:15346 | small molecule | |
ADP(3-)CHEBI:456216 | small molecule | |
HycB2UniProtKB:H6LB62 | protein | |
5,10-methylenetetrahydrofolateCHEBI:1989 | small molecule | |
HycB1UniProtKB:H6LB60 | protein | |
dihydrogenCHEBI:18276 | small molecule | |
acetateCHEBI:30089 | small molecule | |
carbon dioxideCHEBI:16526 | small molecule | |
carbon monoxideCHEBI:17245 | small molecule | |
AcsAUniProtKB:H6LD21 | protein | |
5,10-methenyltetrahydrofolateCHEBI:15638 | small molecule | |
HydA1UniProtKB:H6LFG3 | protein | |
HycB3UniProtKB:H6LB64 | protein | |
10-formyltetrahydrofolateCHEBI:15637 | small molecule | |
5,6,7,8-tetrahydrofolic acidCHEBI:20506 | small molecule | |
hydrogenphosphateCHEBI:43474 | small molecule | |
acetyl-CoACHEBI:15351 | small molecule | |
HydA2UniProtKB:H6LB65 | protein | |
HydBUniProtKB:H6LFG4 | protein | |
FdhF2UniProtKB:H6LB61 | protein | |
NADHCHEBI:16908 | small molecule | |
NAD(+)CHEBI:57540 | small molecule | |
oxidized ferredoxinCHEBI:17908 | small molecule | |
reduced ferredoxinCHEBI:17513 | small molecule | |
FolDUniProtKB:H6LBX6 | protein | |
FchAUniProtKB:H6LBX5 | protein | |
AcsEUniProtKB:H6LD20 | protein | |
AcsDUniProtKB:H6LD18 | protein | |
AcsCUniProtKB:H6LD19 | protein | |
AcsB1UniProtKB:H6LD23 | protein | |
PtaUniProtKB:H6LJY6 | protein | |
acetyl phosphateCHEBI:15350 | small molecule | |
AckAUniProtKB:H6LBE7 | protein | |
tetra-mu3-sulfido-tetraironCHEBI:49883 | cofactor | |
di-mu-sulfido-diironCHEBI:190135 | cofactor | |
magnesium(2+)CHEBI:18420 | cofactor | |
manganese(2+)CHEBI:29035 | cofactor | |
acetyl phosphate to acetate GPML interactionWikiPathways:WP5019/e7431 | molecular activity | left to right |
5,10-methenyltetrahydrofolate to 5,10-methylenetetrahydrofolate GPML interactionWikiPathways:WP5019/id192c7b4a | molecular activity | left to right |
carbon dioxide to carbon monoxide GPML interactionWikiPathways:WP5019/id48aa4469 | molecular activity | left to right |
acetyl-CoA to acetyl phosphate GPML interactionWikiPathways:WP5019/id48bab90b | molecular activity | left to right |
oxidized ferredoxin reduction GPML interactionWikiPathways:WP5019/id4f3af248 | molecular activity | left to right |
10-formyltetrahydrofolate to 5,10-methenyltetrahydrofolate GPML interactionWikiPathways:WP5019/id59fbd0e3 | molecular activity | left to right |
NADH production GPML interactionWikiPathways:WP5019/idb70e2922 | molecular activity | left to right |
formate to 10-formyltetrahydrofolate GPML interactionWikiPathways:WP5019/idcb0cc195 | molecular activity | left to right |
5,10-methylenetetrahydrofolate to 5-methyltetrahydrofolate GPML interactionWikiPathways:WP5019/ide2e37f0 | molecular activity | left to right |
Corrinoid-dependent methyl transfer and acetyl-CoA assembly (aggregate)WikiPathways:WP5019/ideb932d04 | molecular activity | left to right |
carbon dioxide to formate GPML interactionWikiPathways:WP5019/idee9950c3 | molecular activity | left to right |
dihydrogen to proton GPML interactionWikiPathways:WP5019/idf6f6d75 | molecular activity | left to right |
Mechanistic edges
| Subject | Predicate and description | Object | Evidence |
|---|---|---|---|
acetyl phosphateCHEBI:15350 | consumes | acetyl phosphate to acetate GPML interactionWikiPathways:WP5019/e7431 |
|
acetyl phosphate to acetate GPML interactionWikiPathways:WP5019/e7431 | produces | acetateCHEBI:30089 |
|
5,10-methenyltetrahydrofolateCHEBI:15638 | consumes | 5,10-methenyltetrahydrofolate to 5,10-methylenetetrahydrofolate GPML interactionWikiPathways:WP5019/id192c7b4a |
|
5,10-methenyltetrahydrofolate to 5,10-methylenetetrahydrofolate GPML interactionWikiPathways:WP5019/id192c7b4a | produces | 5,10-methylenetetrahydrofolateCHEBI:1989 |
|
carbon dioxideCHEBI:16526 | consumes | carbon dioxide to carbon monoxide GPML interactionWikiPathways:WP5019/id48aa4469 |
|
carbon dioxide to carbon monoxide GPML interactionWikiPathways:WP5019/id48aa4469 | produces | carbon monoxideCHEBI:17245 |
|
acetyl-CoACHEBI:15351 | consumes | acetyl-CoA to acetyl phosphate GPML interactionWikiPathways:WP5019/id48bab90b |
|
acetyl-CoA to acetyl phosphate GPML interactionWikiPathways:WP5019/id48bab90b | produces | acetyl phosphateCHEBI:15350 |
|
oxidized ferredoxinCHEBI:17908 | consumes | oxidized ferredoxin reduction GPML interactionWikiPathways:WP5019/id4f3af248 |
|
oxidized ferredoxin reduction GPML interactionWikiPathways:WP5019/id4f3af248 | produces | reduced ferredoxinCHEBI:17513 |
|
10-formyltetrahydrofolateCHEBI:15637 | consumes | 10-formyltetrahydrofolate to 5,10-methenyltetrahydrofolate GPML interactionWikiPathways:WP5019/id59fbd0e3 |
|
10-formyltetrahydrofolate to 5,10-methenyltetrahydrofolate GPML interactionWikiPathways:WP5019/id59fbd0e3 | produces | 5,10-methenyltetrahydrofolateCHEBI:15638 |
|
NAD(+)CHEBI:57540 | consumes | NADH production GPML interactionWikiPathways:WP5019/idb70e2922 |
|
NADH production GPML interactionWikiPathways:WP5019/idb70e2922 | produces | NADHCHEBI:16908 |
|
formateCHEBI:15740 | consumes | formate to 10-formyltetrahydrofolate GPML interactionWikiPathways:WP5019/idcb0cc195 |
|
formate to 10-formyltetrahydrofolate GPML interactionWikiPathways:WP5019/idcb0cc195 | produces | 10-formyltetrahydrofolateCHEBI:15637 |
|
5,10-methylenetetrahydrofolateCHEBI:1989 | consumes | 5,10-methylenetetrahydrofolate to 5-methyltetrahydrofolate GPML interactionWikiPathways:WP5019/ide2e37f0 |
|
5,10-methylenetetrahydrofolate to 5-methyltetrahydrofolate GPML interactionWikiPathways:WP5019/ide2e37f0 | produces | 5-methyltetrahydrofolateCHEBI:15641 |
|
carbon monoxideCHEBI:17245 | consumes | Corrinoid-dependent methyl transfer and acetyl-CoA assembly (aggregate)WikiPathways:WP5019/ideb932d04 |
|
Corrinoid-dependent methyl transfer and acetyl-CoA assembly (aggregate)WikiPathways:WP5019/ideb932d04 | produces | acetyl-CoACHEBI:15351 |
|
carbon dioxideCHEBI:16526 | consumes | carbon dioxide to formate GPML interactionWikiPathways:WP5019/idee9950c3 |
|
carbon dioxide to formate GPML interactionWikiPathways:WP5019/idee9950c3 | produces | formateCHEBI:15740 |
|
dihydrogenCHEBI:18276 | consumes | dihydrogen to proton GPML interactionWikiPathways:WP5019/idf6f6d75 |
|
dihydrogen to proton GPML interactionWikiPathways:WP5019/idf6f6d75 | produces | H(+)CHEBI:15378 |
|
acetyl phosphate to acetate GPML interactionWikiPathways:WP5019/e7431 | produces | ATP(4-)CHEBI:30616 |
|
carbon dioxide to carbon monoxide GPML interactionWikiPathways:WP5019/id48aa4469 | produces | oxidized ferredoxinCHEBI:17908 |
|
PtaUniProtKB:H6LJY6 | catalyzes | acetyl-CoA to acetyl phosphate GPML interactionWikiPathways:WP5019/id48bab90b |
|
5,10-methylenetetrahydrofolate to 5-methyltetrahydrofolate GPML interactionWikiPathways:WP5019/ide2e37f0 | produces | NAD(+)CHEBI:57540 |
|
formate to 10-formyltetrahydrofolate GPML interactionWikiPathways:WP5019/idcb0cc195 | produces | hydrogenphosphateCHEBI:43474 |
|
FdhF1UniProtKB:H6LB59 | enables | carbon dioxide to formate GPML interactionWikiPathways:WP5019/idee9950c3 |
|
HycB1UniProtKB:H6LB60 | enables | carbon dioxide to formate GPML interactionWikiPathways:WP5019/idee9950c3 |
|
HycB3UniProtKB:H6LB64 | enables | carbon dioxide to formate GPML interactionWikiPathways:WP5019/idee9950c3 |
|
HydA2UniProtKB:H6LB65 | enables | carbon dioxide to formate GPML interactionWikiPathways:WP5019/idee9950c3 |
|
HydBUniProtKB:H6LFG4 | catalyzes | NADH production GPML interactionWikiPathways:WP5019/idb70e2922 |
|
HydA1UniProtKB:H6LFG3 | catalyzes | dihydrogen to proton GPML interactionWikiPathways:WP5019/idf6f6d75 |
|
acetyl-CoA to acetyl phosphate GPML interactionWikiPathways:WP5019/id48bab90b | produces | coenzyme ACHEBI:15346 |
|
AckAUniProtKB:H6LBE7 | catalyzes | acetyl phosphate to acetate GPML interactionWikiPathways:WP5019/e7431 |
|
5,10-methenyltetrahydrofolate to 5,10-methylenetetrahydrofolate GPML interactionWikiPathways:WP5019/id192c7b4a | produces | NAD(+)CHEBI:57540 |
|
HycB2UniProtKB:H6LB62 | enables | carbon dioxide to formate GPML interactionWikiPathways:WP5019/idee9950c3 |
|
FdhF2UniProtKB:H6LB61 | enables | carbon dioxide to formate GPML interactionWikiPathways:WP5019/idee9950c3 |
|
HydBUniProtKB:H6LFG4 | catalyzes | oxidized ferredoxin reduction GPML interactionWikiPathways:WP5019/id4f3af248 |
|
carbon dioxide to formate GPML interactionWikiPathways:WP5019/idee9950c3 | produces | H(+)CHEBI:15378 |
|
formate to 10-formyltetrahydrofolate GPML interactionWikiPathways:WP5019/idcb0cc195 | produces | ADP(3-)CHEBI:456216 |
|
FchAUniProtKB:H6LBX5 | catalyzes | 10-formyltetrahydrofolate to 5,10-methenyltetrahydrofolate GPML interactionWikiPathways:WP5019/id59fbd0e3 |
|
Fhs1UniProtKB:H6LBX4 | catalyzes | formate to 10-formyltetrahydrofolate GPML interactionWikiPathways:WP5019/idcb0cc195 |
|
FolDUniProtKB:H6LBX6 | catalyzes | 5,10-methenyltetrahydrofolate to 5,10-methylenetetrahydrofolate GPML interactionWikiPathways:WP5019/id192c7b4a |
|
AcsAUniProtKB:H6LD21 | catalyzes | carbon dioxide to carbon monoxide GPML interactionWikiPathways:WP5019/id48aa4469 |
|
reduced ferredoxinCHEBI:17513 | consumes | carbon dioxide to carbon monoxide GPML interactionWikiPathways:WP5019/id48aa4469 |
|
5-methyltetrahydrofolateCHEBI:15641 | consumes Aggregate of native corrinoid-bound methyl transfer and acetyl-CoA assembly; free methyl radical is not an intermediate. | Corrinoid-dependent methyl transfer and acetyl-CoA assembly (aggregate)WikiPathways:WP5019/ideb932d04 |
|
coenzyme ACHEBI:15346 | consumes Aggregate of native corrinoid-bound methyl transfer and acetyl-CoA assembly; free methyl radical is not an intermediate. | Corrinoid-dependent methyl transfer and acetyl-CoA assembly (aggregate)WikiPathways:WP5019/ideb932d04 |
|
Corrinoid-dependent methyl transfer and acetyl-CoA assembly (aggregate)WikiPathways:WP5019/ideb932d04 | produces Aggregate of native corrinoid-bound methyl transfer and acetyl-CoA assembly; free methyl radical is not an intermediate. | 5,6,7,8-tetrahydrofolic acidCHEBI:20506 |
|
AcsEUniProtKB:H6LD20 | enables Component of the combined corrinoid methyl transfer/acetyl-CoA assembly, not an independently catalytic complex subunit. | Corrinoid-dependent methyl transfer and acetyl-CoA assembly (aggregate)WikiPathways:WP5019/ideb932d04 |
|
AcsB1UniProtKB:H6LD23 | enables Component of the combined corrinoid methyl transfer/acetyl-CoA assembly, not an independently catalytic complex subunit. | Corrinoid-dependent methyl transfer and acetyl-CoA assembly (aggregate)WikiPathways:WP5019/ideb932d04 |
|
AcsDUniProtKB:H6LD18 | enables Component of the combined corrinoid methyl transfer/acetyl-CoA assembly, not an independently catalytic complex subunit. | Corrinoid-dependent methyl transfer and acetyl-CoA assembly (aggregate)WikiPathways:WP5019/ideb932d04 |
|
AcsCUniProtKB:H6LD19 | enables Component of the combined corrinoid methyl transfer/acetyl-CoA assembly, not an independently catalytic complex subunit. | Corrinoid-dependent methyl transfer and acetyl-CoA assembly (aggregate)WikiPathways:WP5019/ideb932d04 |
|
AcsAUniProtKB:H6LD21 | has_cofactor UniProtKB unreviewed (TrEMBL) annotation. UniProt evidence: ECO:0000256 (ARBA:ARBA00001966) | tetra-mu3-sulfido-tetraironCHEBI:49883 |
|
HydA1UniProtKB:H6LFG3 | has_cofactor UniProtKB unreviewed (TrEMBL) annotation. UniProt evidence: ECO:0000256 (ARBA:ARBA00034078) | di-mu-sulfido-diironCHEBI:190135 |
|
HydA1UniProtKB:H6LFG3 | has_cofactor UniProtKB unreviewed (TrEMBL) annotation. UniProt evidence: ECO:0000256 (ARBA:ARBA00001966) | tetra-mu3-sulfido-tetraironCHEBI:49883 |
|
AckAUniProtKB:H6LBE7 | has_cofactor UniProtKB unreviewed (TrEMBL) annotation. UniProt evidence: ECO:0000256 (HAMAP-Rule:MF_00020) Mg(2+). Can also accept Mn(2+). UniProt note evidence: ECO:0000256 (HAMAP-Rule:MF_00020) | magnesium(2+)CHEBI:18420 |
|
AckAUniProtKB:H6LBE7 | has_cofactor UniProtKB unreviewed (TrEMBL) annotation. UniProt evidence: ECO:0000256 (HAMAP-Rule:MF_00020) Mg(2+). Can also accept Mn(2+). UniProt note evidence: ECO:0000256 (HAMAP-Rule:MF_00020) | manganese(2+)CHEBI:29035 |
|
References
WikiPathways:WP5019WP5019 native structured pathway source (source version: WP5019_r139978)UniProtKB:H6LD21UniProtKB H6LD21 cofactor annotations (source version: 2026_03)UniProtKB:H6LFG3UniProtKB H6LFG3 cofactor annotations (source version: 2026_03)UniProtKB:H6LBE7UniProtKB H6LBE7 cofactor annotations (source version: 2026_03)
Curation history
- Codex
- EDIT — Review complete causal graph against native sources and correct unsupported or omitted relationships
Restored explicit enzymes and directed cofactors. Corrinoid methyl carrier is not a free methyl radical: the two native carrier-transfer/assembly reactions are represented as an aggregate, without a free methyl-radical intermediate. Undirected connectors and energy-complex drawings are not reaction arrows. Every native record was inspected; see reports/causal-graph-diagram-review.json for native-object counts, exclusions and identity corrections. Semantic validation and native GraphId locator checks passed; authority snapshots and full corpus gates are coordinated separately.
- EDIT — Review complete causal graph against native sources and correct unsupported or omitted relationships