NAD salvage pathway IV (from nicotinamide riboside)
gomodel:YeastPathways_PWY3O-4106
NAD salvage pathway IV from nicotinamide riboside in Saccharomyces cerevisiae S288C uses nicotinamide riboside kinase and nicotinamide-nucleotide adenylyltransferase activities to convert N-ribosylnicotinamide through NMN to NAD.
- Pathway type
- nad salvage pathway iv
- Organism scope
Pathway network
19 nodes · 28 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 | |
hydronCHEBI:15378 | small molecule | |
cytosolGO:0005829 | cellular component | |
diphosphoric acidCHEBI:29888 | small molecule | |
NMN(-)CHEBI:14649 | small molecule | |
NRK1 ScerSGD:S000005073 | protein | |
NAD(1-)CHEBI:57540 | small molecule | |
N-ribosylnicotinamideCHEBI:15927 | small molecule | |
ATP(4-)CHEBI:30616 | small molecule | |
NMA1 ScerSGD:S000004320 | protein | |
NAD+ biosynthetic process via the salvage pathwayGO:0034355 | biological process | |
ADP(3-)CHEBI:456216 | small molecule | |
NMA2 ScerSGD:S000003242 | protein | |
cytoplasmGO:0005737 | cellular component | |
nucleusGO:0005634 | cellular component | |
nickel(2+)CHEBI:49786 | cofactor | |
cobalt(2+)CHEBI:48828 | cofactor | |
β-nicotinamide D-ribonucleotide + ATP + H+ -> NAD+ + diphosphategomodel:2.7.7.1-RXN | molecular activity | |
1-(β-D ribofuranosyl)nicotinamide + ATP -> β-nicotinamide D-ribonucleotide + ADP + H+gomodel:RIBOSYLNICOTINAMIDE-KINASE-RXN | molecular activity | |
nicotinamide-nucleotide adenylyltransferase activitygomodel:YeastPathways_PWY3O-4106/6a46ef0600000917 | molecular activity |
Mechanistic edges
| Subject | Predicate and description | Object | Evidence |
|---|---|---|---|
1-(β-D ribofuranosyl)nicotinamide + ATP -> β-nicotinamide D-ribonucleotide + ADP + H+gomodel:RIBOSYLNICOTINAMIDE-KINASE-RXN | has_output | hydronCHEBI:15378 |
|
β-nicotinamide D-ribonucleotide + ATP + H+ -> NAD+ + diphosphategomodel:2.7.7.1-RXN | has_input | hydronCHEBI:15378 |
|
β-nicotinamide D-ribonucleotide + ATP + H+ -> NAD+ + diphosphategomodel:2.7.7.1-RXN | occurs_in | cytosolGO:0005829 |
|
nicotinamide-nucleotide adenylyltransferase activitygomodel:YeastPathways_PWY3O-4106/6a46ef0600000917 | has_input | hydronCHEBI:15378 |
|
β-nicotinamide D-ribonucleotide + ATP + H+ -> NAD+ + diphosphategomodel:2.7.7.1-RXN | has_output | diphosphoric acidCHEBI:29888 |
|
1-(β-D ribofuranosyl)nicotinamide + ATP -> β-nicotinamide D-ribonucleotide + ADP + H+gomodel:RIBOSYLNICOTINAMIDE-KINASE-RXN | has_output | NMN(-)CHEBI:14649 |
|
NRK1 ScerSGD:S000005073 | enables | 1-(β-D ribofuranosyl)nicotinamide + ATP -> β-nicotinamide D-ribonucleotide + ADP + H+gomodel:RIBOSYLNICOTINAMIDE-KINASE-RXN |
|
β-nicotinamide D-ribonucleotide + ATP + H+ -> NAD+ + diphosphategomodel:2.7.7.1-RXN | has_output | NAD(1-)CHEBI:57540 |
|
1-(β-D ribofuranosyl)nicotinamide + ATP -> β-nicotinamide D-ribonucleotide + ADP + H+gomodel:RIBOSYLNICOTINAMIDE-KINASE-RXN | has_input | N-ribosylnicotinamideCHEBI:15927 |
|
nicotinamide-nucleotide adenylyltransferase activitygomodel:YeastPathways_PWY3O-4106/6a46ef0600000917 | has_input | ATP(4-)CHEBI:30616 |
|
NMA1 ScerSGD:S000004320 | enables | β-nicotinamide D-ribonucleotide + ATP + H+ -> NAD+ + diphosphategomodel:2.7.7.1-RXN |
|
β-nicotinamide D-ribonucleotide + ATP + H+ -> NAD+ + diphosphategomodel:2.7.7.1-RXN | has_input | ATP(4-)CHEBI:30616 |
|
1-(β-D ribofuranosyl)nicotinamide + ATP -> β-nicotinamide D-ribonucleotide + ADP + H+gomodel:RIBOSYLNICOTINAMIDE-KINASE-RXN | has_input | ATP(4-)CHEBI:30616 |
|
1-(β-D ribofuranosyl)nicotinamide + ATP -> β-nicotinamide D-ribonucleotide + ADP + H+gomodel:RIBOSYLNICOTINAMIDE-KINASE-RXN | occurs_in | cytosolGO:0005829 |
|
nicotinamide-nucleotide adenylyltransferase activitygomodel:YeastPathways_PWY3O-4106/6a46ef0600000917 | has_output | NAD(1-)CHEBI:57540 |
|
nicotinamide-nucleotide adenylyltransferase activitygomodel:YeastPathways_PWY3O-4106/6a46ef0600000917 | has_output | diphosphoric acidCHEBI:29888 |
|
nicotinamide-nucleotide adenylyltransferase activitygomodel:YeastPathways_PWY3O-4106/6a46ef0600000917 | has_input | NMN(-)CHEBI:14649 |
|
β-nicotinamide D-ribonucleotide + ATP + H+ -> NAD+ + diphosphategomodel:2.7.7.1-RXN | part_of | NAD+ biosynthetic process via the salvage pathwayGO:0034355 |
|
1-(β-D ribofuranosyl)nicotinamide + ATP -> β-nicotinamide D-ribonucleotide + ADP + H+gomodel:RIBOSYLNICOTINAMIDE-KINASE-RXN | has_output | ADP(3-)CHEBI:456216 |
|
1-(β-D ribofuranosyl)nicotinamide + ATP -> β-nicotinamide D-ribonucleotide + ADP + H+gomodel:RIBOSYLNICOTINAMIDE-KINASE-RXN | part_of | NAD+ biosynthetic process via the salvage pathwayGO:0034355 |
|
NMA2 ScerSGD:S000003242 | enables | nicotinamide-nucleotide adenylyltransferase activitygomodel:YeastPathways_PWY3O-4106/6a46ef0600000917 |
|
β-nicotinamide D-ribonucleotide + ATP + H+ -> NAD+ + diphosphategomodel:2.7.7.1-RXN | has_input | NMN(-)CHEBI:14649 |
|
nicotinamide-nucleotide adenylyltransferase activitygomodel:YeastPathways_PWY3O-4106/6a46ef0600000917 | part_of | NAD+ biosynthetic process via the salvage pathwayGO:0034355 |
|
NMA1 ScerSGD:S000004320 | located_in Physical protein location from reviewed UniProt. ECO:0000269 (PubMed:14562095) | cytoplasmGO:0005737 |
|
NMA1 ScerSGD:S000004320 | located_in Physical protein location from reviewed UniProt. ECO:0000269 (PubMed:14562095) | nucleusGO:0005634 |
|
NMA2 ScerSGD:S000003242 | located_in Physical protein location from reviewed UniProt. ECO:0000269 (PubMed:11884393) | nucleusGO:0005634 |
|
NMA1 ScerSGD:S000004320 | has_cofactor UniProtKB reviewed (Swiss-Prot) annotation. UniProt evidence: ECO:0000269 (PubMed:10428462) Divalent metal cation. UniProt note evidence: ECO:0000269 (PubMed:10428462) | nickel(2+)CHEBI:49786 |
|
NMA2 ScerSGD:S000003242 | has_cofactor UniProtKB reviewed (Swiss-Prot) annotation. UniProt evidence: ECO:0000269 (PubMed:12597897) Divalent metal cation. UniProt note evidence: ECO:0000269 (PubMed:12597897) | cobalt(2+)CHEBI:48828 |
|
References
gomodel:YeastPathways_PWY3O-4106SGD GO-CAM NAD salvage pathway IV (from nicotinamide riboside) - imported from: Saccharomyces Genome Database (source version: Pinned Noctua JSON archive; model date 2026-07-06; member ./YeastPathways_PWY3O-4106.json)UniProtKB:Q06178Reviewed UniProtKB Q06178 location annotations (source version: UniProt release 2026_03)UniProtKB:P53204Reviewed UniProtKB P53204 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
- EDIT — Audit causal activity compartments and preserve scoped protein location evidence
Reviewed all 3 activity location assignments and 3 mapped physical proteins against reviewed S288C UniProt release2026_03 location/function/caution batch SHA256 95f72dcc644358c480e0e59f996cf88533558b5fa4256460a030e0a1eaf9678d. Added 3 independently supported location edges and quarantined 1 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