mycophenolic acid
CHEBI:168396 EXACT SEEDED antiviralcytotoxic
What these status tags mean
Curation status describes a workflow state. SEEDED means the record entered through the source-seeding workflow; it does not imply that no later curation occurred. PROPOSED marks an addition awaiting review; REVIEWED records curator sign-off on identity, structure, filing class and producer claims; DEPRECATED retains a superseded or out-of-scope record. These are workflow decisions, not independently verified human review. Agent-assisted contributions may appear in the record history.
Grounding describes the identifier mapping: EXACT uses an ontology identity asserted by the source; MINTED keeps a local identifier when no defensible ontology identity is available; REVIEW_NEEDED flags an exact structure whose ontology identity needs adjudication. The grounding note retains any unresolved alternatives. These tags do not establish the strength of producer or activity evidence.
A member of the class of 2-benzofurans that is 2-benzofuran-1(3H)-one which is substituted at positions 4, 5, 6, and 7 by methyl, methoxy, (2E)-5-carboxy-3-methylpent-2-en-1-yl, and hydroxy groups, respectively. It is an antibiotic produced by Penicillium brevi-compactum, P. stoloniferum, P. echinulatum and related species. An immunosuppressant, it is widely used (partiularly as its sodium salt and as the 2-(morpholin-4-yl)ethyl ester prodrug, mycophenolate mofetil) to prevent tissue rejection following organ transplants and for the treatment of certain autoimmune diseases.
Structure
| Standard InChIKey | HPNSFSBZBAHARI-RUDMXATFSA-N |
|---|---|
| SMILES | COC1=C(C\C=C(/C)CCC(O)=O)C(O)=C2C(=O)OCC2=C1C |
| Stereochemistry | fully defined |
| Cross-references | npatlas:NPA015757, pubchem:446541, chembl:CHEMBL866 |
Filing pathway
Polyketides — computed by NPClassifier npclassifier.gnps2.org@2026-09-07, which is why it is pinned rather than recomputed. The gene cluster's asserted class is pks, from MIBiG.
Producer organisms 4
A claim that this taxon makes the compound. The basis says what the evidence addressed — a knockout and a database assertion are not the same claim.
| Taxon | Basis | Cluster | Evidence |
|---|---|---|---|
| Penicillium brevicompactum NCBITaxon:5074 |
BGC_CHARACTERIZED | mibig:BGC0000104 | DOI:10.1128/aem.03015-10 |
| Penicillium roqueforti NCBITaxon:5082 |
BGC_CORRELATED | mibig:BGC0002616 | PMID:27889155 |
| Penicillium brevicompactum NCBITaxon:5074 |
BGC_CORRELATED | mibig:BGC0002619 | DOI:10.1128/aem.41.3.729-736.1981 |
| Penicillium roqueforti NCBITaxon:5082 |
SOURCE_ASSERTION | mibig:BGC0001677 | PMID:27889155 |
Occurrences 7
Somebody found the compound in this organism and cited it. That is not a claim that the organism makes it, and nothing here promotes one to the other.
| Taxon | Source | Reference |
|---|---|---|
| Aspergillus NCBITaxon:5052 |
LOTUS | DOI:10.1042/BJ0500630 |
| Penicillium NCBITaxon:5073 |
LOTUS | DOI:10.1016/J.BMCL.2012.02.106 |
| Penicillium griseofulvum NCBITaxon:5078 |
LOTUS | DOI:10.1021/OL060107C |
| Penicillium echinulatum NCBITaxon:60174 |
LOTUS | DOI:10.1016/S0007-1536(88)80040-8 |
| Penicillium parvum NCBITaxon:70113 |
LOTUS | DOI:10.1021/NP8003497 |
| Penicillium brevicompactum NCBITaxon:5074 |
LOTUS | DOI:10.1128/AEM.03015-10 |
| Penicillium roqueforti NCBITaxon:5082 |
LOTUS | DOI:10.1016/J.FM.2016.10.013 |
Biosynthetic gene clusters 4
| Accession | Host | Locus evidence | Genome |
|---|---|---|---|
| mibig:BGC0000104 | Penicillium brevicompactum NCBITaxon:5074 |
CLUSTER_DEMONSTRATED | genbank:HQ731031.1 |
| mibig:BGC0002616 | Penicillium roqueforti NCBITaxon:5082 |
CLUSTER_CORRELATED | genbank:KU234531.1 |
| mibig:BGC0002619 | Penicillium brevicompactum NCBITaxon:5074 |
CLUSTER_CORRELATED | genbank:KM595305.1 |
| mibig:BGC0001677 | Penicillium roqueforti NCBITaxon:5082 |
CLUSTER_UNSTATED | genbank:KU234530.1 |
A locus claim and a taxon claim are different questions. Heterologous expression settles the first and leaves the second where the isolation report left it.
Mechanism & Biosynthesis Overview
Causal graph — bioactivity 4 nodes, 3 edges
Mycophenolic acid inhibits human and Chinese hamster inosine-5'-monophosphate dehydrogenase isoforms.
| Subject | Predicate | Object | Notes | Evidence |
|---|---|---|---|---|
| mycophenolic acid | inhibits | human inosine-5'-monophosphate dehydrogenase 1 | BindingDB-deposited PubChem BioAssay AID 1797840 maps this exact Standard InChIKey to an active 0.033 uM Ki measurement against human IMPDH type 1; P20839 resolves in UniProtKB to the human IMPDH1 gene product. | DOI:10.1021/jm070568j
|
| mycophenolic acid | inhibits | human inosine-5'-monophosphate dehydrogenase 2 | BindingDB-deposited PubChem BioAssay AIDs 1797841, 1797842 and 1803439 map this exact Standard InChIKey to active 0.007 uM Ki, 0.016 uM IC50 and 0.13 uM IC50 measurements against human IMPDH2; P12268 resolves in UniProtKB to the human IMPDH2 gene product. | DOI:10.1021/jm070568j |
| mycophenolic acid | inhibits | Chinese hamster inosine-5'-monophosphate dehydrogenase 2 | PubChem BioAssay AID 977610 maps this exact Standard InChIKey to an active 0.006 uM Ki row for PDB 1JR1 chain A; RCSB identifies 1JR1 as Chinese hamster IMPDH2 in complex with MOA mycophenolic acid and maps entity 1 to UniProtKB:P12269. | DOI:10.1016/S0092-8674(00)81275-1 |
Every edge carries its own citation; an uncited edge is refused by the corpus tests.
Causal graph — biosynthesis 3 nodes, 2 edges
Penicillium brevicompactum MpaG'-catalyzed O-methylation in mycophenolic acid biosynthesis.
| Subject | Predicate | Object | Notes | Evidence |
|---|---|---|---|---|
| demethylmycophenolic acid | is O-methylated by | MpaG' O-methyltransferase | Zhang et al. assayed MpaG' against demethylmycophenolic acid from the same Penicillium brevicompactum NRRL 864 mpa' cluster carried by BGC0002619. MITE maps this terminal O-methylation to RHEA:81843, and UniProt now annotates that reaction on A0A0B5L781, but the local ChEBI inventory has mycophenolate and not CHEBI:231832 for 6-O-desmethylmycophenolate, so the substrate remains ungrounded. | DOI:10.1002/cbic.201402600 |
| MpaG' O-methyltransferase | forms | mycophenolic acid | MpaG' can methylate three mycophenolic acid precursors; the direct demethylmycophenolic acid reaction forms mycophenolic acid and is represented here as the terminal product-forming branch without asserting that this branch is the sole physiological route through the compartmentalized pathway. | DOI:10.1002/cbic.201402600 |
Every edge carries its own citation; an uncited edge is refused by the corpus tests.
Causal graph — biosynthesis 4 nodes, 3 edges
By-similarity MpaG O-methylation context for the native Penicillium brevicompactum IBT23078 reference. This F1DBB3 protein differs from the existing NRRL864 MpaG' protein at three residues and is not a second independently assayed enzyme. MITE supplies an exact neutral-product example; UniProt explicitly transfers the corresponding reaction by similarity. Existing graphs, source grades and discussions are preserved; not full-record sign-off.
| Subject | Predicate | Object | Notes | Evidence |
|---|---|---|---|---|
| MpaG native IBT23078 reference | is_by_similarity_predicted_catalyst_of | MpaG O-methylation inferred by similarity | Function is inferred by similarity, not verified by native sequence translation. The latter establishes reference identity only. No primary experiment, activity magnitude, site, mutant, localization, cofactor state or physical complex is adopted for this protein. | https://github.com/mite-standard/mite_data/blob/6eacd913b2036376031072f69cbb33908f132998/mite_data/data/MITE0000011.json |
| Demethylmycophenolic acid, database example | is_database_example_substrate_of | MpaG O-methylation inferred by similarity | MITE names and encodes a neutral demethylmycophenolic acid example. The substrate remains ungrounded: the UniProt reaction's ionic 6-O-desmethylmycophenolate identifier is not silently assigned to the neutral compound. No upstream steps or preferred physiological route inferred. | https://github.com/mite-standard/mite_data/blob/6eacd913b2036376031072f69cbb33908f132998/mite_data/data/MITE0000011.json |
| MpaG O-methylation inferred by similarity | has_database_example_product | mycophenolic acid | Pinned MITE neutral product matches the owner's full InChIKey HPNSFSBZBAHARI-RUDMXATFSA-N and complete stereo via the repository helper and RDKit2026.03.5. UniProt's ionic mycophenolate is not relabelled as the neutral acid. No pathway finality or assay transfer is asserted. The different-structure same-label BGC0001360 record is not included; all source grades and old graphs remain unchanged, including the AntibioticMech link. | https://github.com/mite-standard/mite_data/blob/6eacd913b2036376031072f69cbb33908f132998/mite_data/data/MITE0000011.json |
Every edge carries its own citation; an uncited edge is refused by the corpus tests.
Causal graph — biosynthesis 14 nodes, 14 edges
Penicillium brevicompactum NRRL864. Database-annotated partial biosynthesis, not a new primary-experiment assessment. Reference-CDS identity does not authenticate assay stocks, constructs, localization or reaction rates. Intermediates remain ungrounded; ionic reaction participants are not relabelled as neutral CHEBI:168396. No missing side-chain-processing steps, preferred methylation order or complete physiological route are inferred. MpaF resistance proteins are excluded, and existing MpaG graphs and AntibioticMech content remain unchanged. MpaH' is withheld because canonical433aa conflicts with the deposited398aa gene model.
| Subject | Predicate | Object | Notes | Evidence |
|---|---|---|---|---|
| MpaC' (NRRL864 reference) | is_database_annotated_catalyst_of | 5-Methylorsellinate synthesis | Database reaction uses acetyl-CoA, three malonyl-CoA and SAM; it is not an assertion of a free precursor pool or a new assay. | https://www.uniprot.org/uniprotkb/A0A0B5KU17 |
| 5-Methylorsellinate synthesis | has_database_reaction_product | 5-Methylorsellinate | https://www.uniprot.org/uniprotkb/A0A0B5KU17
|
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| MpaDE' (NRRL864 reference) | is_database_annotated_catalyst_of | 5-Methylorsellinate hydroxylation | One fused protein has two database-annotated activities; no separate MpaD or MpaE protein is added. | https://www.uniprot.org/uniprotkb/A0A0B5KYT4 |
| 5-Methylorsellinate | is_substrate_in_database_reaction | 5-Methylorsellinate hydroxylation | https://www.uniprot.org/uniprotkb/A0A0B5KYT4
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| 5-Methylorsellinate hydroxylation | has_database_reaction_product | DHMB carboxylate intermediate | https://www.uniprot.org/uniprotkb/A0A0B5KYT4
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| MpaDE' (NRRL864 reference) | is_database_annotated_catalyst_of | DHMB lactonization | One fused protein has two database-annotated activities; no separate MpaD or MpaE protein is added. | https://www.uniprot.org/uniprotkb/A0A0B5KYT4
|
| DHMB carboxylate intermediate | is_substrate_in_database_reaction | DHMB lactonization | https://www.uniprot.org/uniprotkb/A0A0B5KYT4
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|
| DHMB lactonization | has_database_reaction_product | 5,7-Dihydroxy-4-methylphthalide (DHMP) | https://www.uniprot.org/uniprotkb/A0A0B5KYT4
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| MpaA' (NRRL864 reference) | is_database_annotated_catalyst_of | DHMP farnesylation | https://www.uniprot.org/uniprotkb/A0A0B5L778 |
|
| 5,7-Dihydroxy-4-methylphthalide (DHMP) | is_substrate_in_database_reaction | DHMP farnesylation | https://www.uniprot.org/uniprotkb/A0A0B5L778
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| DHMP farnesylation | has_database_reaction_product | 4-Farnesyl-3,5-dihydroxy-6-methylphthalide (FDHMP) | https://www.uniprot.org/uniprotkb/A0A0B5L778
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| MpaB' (NRRL864 reference) | is_database_annotated_catalyst_of | FDHMP side-chain cleavage | https://www.uniprot.org/uniprotkb/A0A0B5LB52 |
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| 4-Farnesyl-3,5-dihydroxy-6-methylphthalide (FDHMP) | is_substrate_in_database_reaction | FDHMP side-chain cleavage | https://www.uniprot.org/uniprotkb/A0A0B5LB52
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| FDHMP side-chain cleavage | has_database_reaction_product | FDHMP-3C carboxylate intermediate | https://www.uniprot.org/uniprotkb/A0A0B5LB52
|
Every edge carries its own citation; an uncited edge is refused by the corpus tests.
Causal graph — biosynthesis 18 nodes, 17 edges
Penicillium brevicompactum IBT23078. Database-annotated partial biosynthesis, not a new primary-experiment assessment. Reference-CDS identity does not authenticate assay stocks, constructs, localization or reaction rates. Intermediates remain ungrounded; ionic reaction participants are not relabelled as neutral CHEBI:168396. No missing side-chain-processing steps, preferred methylation order or complete physiological route are inferred. MpaF resistance proteins are excluded, and existing MpaG graphs and AntibioticMech content remain unchanged. MpaB function is by similarity; MpaH hydrolysis is curator-inferred. These statuses apply to their substrate/product edges too.
| Subject | Predicate | Object | Notes | Evidence |
|---|---|---|---|---|
| MpaC (IBT23078 reference) | is_database_annotated_catalyst_of | 5-Methylorsellinate synthesis | Database reaction uses acetyl-CoA, three malonyl-CoA and SAM; it is not an assertion of a free precursor pool or a new assay. | https://www.uniprot.org/uniprotkb/F1DBA9 |
| 5-Methylorsellinate synthesis | has_database_reaction_product | 5-Methylorsellinate | https://www.uniprot.org/uniprotkb/F1DBA9
|
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| MpaDE (IBT23078 reference) | is_database_annotated_catalyst_of | 5-Methylorsellinate hydroxylation | One fused protein has two database-annotated activities; no separate MpaD or MpaE protein is added. | https://www.uniprot.org/uniprotkb/I7LRH3 |
| 5-Methylorsellinate | is_substrate_in_database_reaction | 5-Methylorsellinate hydroxylation | https://www.uniprot.org/uniprotkb/I7LRH3
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| 5-Methylorsellinate hydroxylation | has_database_reaction_product | DHMB carboxylate intermediate | https://www.uniprot.org/uniprotkb/I7LRH3
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| MpaDE (IBT23078 reference) | is_database_annotated_catalyst_of | DHMB lactonization | One fused protein has two database-annotated activities; no separate MpaD or MpaE protein is added. | https://www.uniprot.org/uniprotkb/I7LRH3
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| DHMB carboxylate intermediate | is_substrate_in_database_reaction | DHMB lactonization | https://www.uniprot.org/uniprotkb/I7LRH3
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| DHMB lactonization | has_database_reaction_product | 5,7-Dihydroxy-4-methylphthalide (DHMP) | https://www.uniprot.org/uniprotkb/I7LRH3
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| MpaA (IBT23078 reference) | is_database_annotated_catalyst_of | DHMP farnesylation | https://www.uniprot.org/uniprotkb/F1DBA7 |
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| 5,7-Dihydroxy-4-methylphthalide (DHMP) | is_substrate_in_database_reaction | DHMP farnesylation | https://www.uniprot.org/uniprotkb/F1DBA7
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| DHMP farnesylation | has_database_reaction_product | 4-Farnesyl-3,5-dihydroxy-6-methylphthalide (FDHMP) | https://www.uniprot.org/uniprotkb/F1DBA7
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| MpaB (IBT23078 reference) | is_by_similarity_predicted_catalyst_of | FDHMP side-chain cleavage (by similarity) | https://www.uniprot.org/uniprotkb/F1DBA8 |
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| 4-Farnesyl-3,5-dihydroxy-6-methylphthalide (FDHMP) | is_substrate_in_inferred_database_reaction | FDHMP side-chain cleavage (by similarity) | https://www.uniprot.org/uniprotkb/F1DBA8
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| FDHMP side-chain cleavage (by similarity) | has_inferred_database_reaction_product | FDHMP-3C carboxylate intermediate | https://www.uniprot.org/uniprotkb/F1DBA8
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| MpaH (IBT23078 reference) | is_curator_inferred_catalyst_of | Mycophenolyl-CoA hydrolysis (inferred) | Disconnected late-step context: no edge bridges the unrepresented side-chain-processing reactions. Mycophenolate is not the neutral owner. | https://www.uniprot.org/uniprotkb/F1DBB4 |
| Mycophenolyl-CoA | is_substrate_in_inferred_database_reaction | Mycophenolyl-CoA hydrolysis (inferred) | https://www.uniprot.org/uniprotkb/F1DBB4
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| Mycophenolyl-CoA hydrolysis (inferred) | has_inferred_database_reaction_product | Mycophenolate (ionic product) | https://www.uniprot.org/uniprotkb/F1DBB4
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Every edge carries its own citation; an uncited edge is refused by the corpus tests.
Causal graph — biosynthesis 38 nodes, 42 edges
Penicillium brevicompactum NRRL864 (Pb864), in-vitro side-chain assembly. Compound numbers follow Fan et al. 2025. Cached main text and captions only; supplementary sequences and methods were inaccessible. Paper-labelled assay proteins remain ungrounded or review-needed, not substituted with homologs; MpaH' (mpah_prime) is linked to the separate NRRL 864 reference node mpah_prime_native (UniProtKB:A0A0B5LB55) without equating construct or splice-model identity. No native necessity, physiological rate limit, localization, preferred methylation order or quantitative kinetics is asserted. The demethylated branch stops at 3-CoA here; no unrepresented downstream steps are implied.
| Subject | Predicate | Object | Notes | Evidence |
|---|---|---|---|---|
| PbACL75 (Pb864 paper label) | catalyzes_in_reported_assay | CoA ligation of 2 | ATP, CoA, Mg2+; individual purified ligases. | DOI:10.1002/advs.202508826
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| PbACL1224 (Pb864 paper label) | catalyzes_in_reported_assay | CoA ligation of 2 | DOI:10.1002/advs.202508826
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| PbACL891 (Pb864 paper label) | catalyzes_in_reported_assay | CoA ligation of 2 | P9WEY3 is an unadopted species/name candidate; the 2025 construct sequence was not inspected. | DOI:10.1002/advs.202508826 |
| MFDHMP-3C (2) | is_reported_substrate_of | CoA ligation of 2 | DOI:10.1002/advs.202508826
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| CoA ligation of 2 | has_reported_product | MFDHMP-3C-CoA (2-CoA) | DOI:10.1002/advs.202508826
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| PbACL75 (Pb864 paper label) | catalyzes_in_reported_assay | CoA ligation of 3 | DOI:10.1002/advs.202508826
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| PbACL1224 (Pb864 paper label) | catalyzes_in_reported_assay | CoA ligation of 3 | DOI:10.1002/advs.202508826
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| PbACL891 (Pb864 paper label) | catalyzes_in_reported_assay | CoA ligation of 3 | DOI:10.1002/advs.202508826
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| FDHMP-3C (3) | is_reported_substrate_of | CoA ligation of 3 | DOI:10.1002/advs.202508826
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| CoA ligation of 3 | has_reported_product | FDHMP-3C-CoA (3-CoA) | DOI:10.1002/advs.202508826
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| PbACOX323 (Pb864 paper label) | catalyzes_in_reported_assay | First-cycle desaturation | DOI:10.1002/advs.202508826
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| MFDHMP-3C-CoA (2-CoA) | is_reported_substrate_of | First-cycle desaturation | DOI:10.1002/advs.202508826
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| First-cycle desaturation | has_reported_product | 2,4-Dienoyl intermediate (5-CoA) | DOI:10.1002/advs.202508826
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| PbDECR799 (Pb864 paper label) | catalyzes_in_reported_assay | Dienoyl-CoA reduction | NADPH-dependent assay. | DOI:10.1002/advs.202508826
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| 2,4-Dienoyl intermediate (5-CoA) | is_reported_substrate_of | Dienoyl-CoA reduction | DOI:10.1002/advs.202508826
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| Dienoyl-CoA reduction | has_reported_product | 3-Enoyl intermediate (9-CoA) | DOI:10.1002/advs.202508826
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| PbECI1007 (Pb864 paper label) | catalyzes_in_reported_assay | Delta3-to-Delta2 isomerization | Reported hydrolysis/chiral-HPLC and NMR distinguish the isomers despite initial coelution. | DOI:10.1002/advs.202508826
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| 3-Enoyl intermediate (9-CoA) | is_reported_substrate_of | Delta3-to-Delta2 isomerization | DOI:10.1002/advs.202508826
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| Delta3-to-Delta2 isomerization | has_reported_product | 2-Enoyl intermediate (10-CoA) | DOI:10.1002/advs.202508826
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| PbECHD1071 (Pb864 paper label) | catalyzes_in_reported_assay | First-cycle hydration/dehydrogenation | Combined transformation; NAD+/FAD assay. Cofactor mechanism unresolved; not two isolated half-reaction assays. | DOI:10.1002/advs.202508826
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| 2-Enoyl intermediate (10-CoA) | is_reported_substrate_of | First-cycle hydration/dehydrogenation | DOI:10.1002/advs.202508826
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| First-cycle hydration/dehydrogenation | has_reported_product | 3-Keto intermediate (8-CoA) | DOI:10.1002/advs.202508826
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| First-cycle hydration/dehydrogenation | has_reported_detected_intermediate | 3-Hydroxy intermediate (7-CoA) | Intermediate detected in the one-pot system; attribution follows the reported reaction scheme. | DOI:10.1002/advs.202508826
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| PbKT298 (Pb864 paper label) | catalyzes_in_reported_assay | First-cycle thiolysis | Enzyme addition to the specified reconstituted mixture, not an isolated-substrate assay. | DOI:10.1002/advs.202508826
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| 3-Keto intermediate (8-CoA) | is_reported_substrate_of | First-cycle thiolysis | DOI:10.1002/advs.202508826
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| First-cycle thiolysis | has_reported_product | MFDHMP-5C-CoA (6-CoA) | DOI:10.1002/advs.202508826
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| First-cycle thiolysis | has_reported_product | Acetyl-CoA | DOI:10.1002/advs.202508826
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| PbACOX323 (Pb864 paper label) | catalyzes_in_reported_assay | Second-cycle desaturation | DOI:10.1002/advs.202508826
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| MFDHMP-5C-CoA (6-CoA) | is_reported_substrate_of | Second-cycle desaturation | DOI:10.1002/advs.202508826
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| Second-cycle desaturation | has_reported_product | 2-Enoyl intermediate (4-CoA) | DOI:10.1002/advs.202508826
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| PbECHD1071 (Pb864 paper label) | catalyzes_in_reported_assay | Second-cycle hydration/dehydrogenation | Combined transformation; NAD+/FAD assay. Cofactor mechanism unresolved; not two isolated half-reaction assays. | DOI:10.1002/advs.202508826
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| 2-Enoyl intermediate (4-CoA) | is_reported_substrate_of | Second-cycle hydration/dehydrogenation | DOI:10.1002/advs.202508826
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| Second-cycle hydration/dehydrogenation | has_reported_product | 3-Keto intermediate (11-CoA) | DOI:10.1002/advs.202508826
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| Second-cycle hydration/dehydrogenation | has_reported_detected_intermediate | 3-Hydroxy intermediate (12-CoA) | Intermediate detected in the one-pot system; attribution follows the reported reaction scheme. | DOI:10.1002/advs.202508826
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| PbKT298 (Pb864 paper label) | catalyzes_in_reported_assay | Second-cycle thiolysis | Enzyme addition to the specified reconstituted mixture, not an isolated-substrate assay. | DOI:10.1002/advs.202508826
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| 3-Keto intermediate (11-CoA) | is_reported_substrate_of | Second-cycle thiolysis | DOI:10.1002/advs.202508826
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| Second-cycle thiolysis | has_reported_product | MPA-CoA (1-CoA) | DOI:10.1002/advs.202508826
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| Second-cycle thiolysis | has_reported_product | Propionyl-CoA | DOI:10.1002/advs.202508826
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| MpaH' (2025 assay label) | catalyzes_in_reported_assay | MPA-CoA hydrolysis | Addition to the final cascade mixture. The independent 2021 structure does not authenticate this 2025 construct. | DOI:10.1002/advs.202508826
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| MPA-CoA (1-CoA) | is_reported_substrate_of | MPA-CoA hydrolysis | DOI:10.1002/advs.202508826
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| MPA-CoA hydrolysis | has_reported_product | mycophenolic acid | DOI:10.1002/advs.202508826
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| MpaH' native NRRL864 reference | is_native_reference_for | MpaH' (2025 assay label) | UniProtKB:A0A0B5LB55 (Penicillium brevicompactum NRRL 864 MpaH', reviewed sequence version 2, 433 aa) is the canonical NRRL 864 reference for MpaH' (2025 assay label, node 'mpah_prime'). GenBank KM595305.1 translates a 398-aa three-exon model (AJG44385.1) that UniProt marks as an erroneous gene model (ALT_SEQ; 433-aa canonical sequence version 2 is supported by PDB 7DBI), while the IBT 23061 cluster deposit KJ863532.1 / AIA21557.1 encodes a 413-aa model. Because supplementary sequences and expression-construct details in Fan et al. 2025 were inaccessible, mpah_prime remains REVIEW_NEEDED and is not equated with the 433-aa canonical UniProt sequence, the 398-aa AJG44385.1 genomic translation, or the 413-aa AIA21557.1 IBT 23061 deposit. | https://www.uniprot.org/uniprotkb/A0A0B5LB55 |
Every edge carries its own citation; an uncited edge is refused by the corpus tests.
Causal graph — biosynthesis 4 nodes, 3 edges
MpaH' canonical reference grounded by independent structural entity sequences. Reaction provenance remains database-only; the 2021 article itself was not inspected beyond its abstract. No native gene-model repair, assay-stock authentication, mutant catalysis, bound CoA substrate, quantitative specificity or dimer mechanism is claimed. Ionic mycophenolate remains distinct from neutral CHEBI:168396 and the 2025 paper-labelled assay.
| Subject | Predicate | Object | Notes | Evidence |
|---|---|---|---|---|
| Type I acyl-CoA thioesterase mpaH' | is_database_annotated_catalyst_of | Database-annotated thioester hydrolysis | https://www.uniprot.org/uniprotkb/A0A0B5LB55 |
|
| Mycophenolyl-CoA | is_substrate_in_database_reaction | Database-annotated thioester hydrolysis | https://www.uniprot.org/uniprotkb/A0A0B5LB55
|
|
| Database-annotated thioester hydrolysis | has_database_reaction_product | Mycophenolate (ionic product) | https://www.uniprot.org/uniprotkb/A0A0B5LB55
|
Every edge carries its own citation; an uncited edge is refused by the corpus tests.
Bioactivities 25
Entries preserve source qualifiers, targets and evidence. Repeated assay names or values are not independent replications; inspect source detail for differences.
| Assay | Result | Target enzyme | Source detail |
|---|---|---|---|
| A Cell Based Secondary Assay To Explore Cytotoxicity of West Nile Virus Anti-Viral Hit Compounds | OTHER 4.61 uM; ACTIVE | Not recorded | pubchem.aid:1650
|
| A Cell-Based Confirmatory Screen for Compounds that Inhibit VEEV, TC-83 | IC50 0.05 uM; ACTIVE | Not recorded | pubchem.aid:588727
|
| A quantitative high throughput screen for small molecules that induce DNA re-replication in MCF 10a normal breast cells. | OTHER 0.3663 uM; INACTIVE | Not recorded | pubchem.aid:624296
|
| Acetylcholinesterase (AChE) small molecule antagonists: fluorescence cell-based qHTS assay | OTHER 43.6486 uM; NOT_DETERMINED | Not recorded | pubchem.aid:1347398
|
| BET inhibitor-based combinations targeting novel dependencies in MECOM-rearranged (r) AML: AML-191 cell line | OTHER 1.0484 uM; ACTIVE | Not recorded | pubchem.aid:2202236
|
| BET inhibitor-based combinations targeting novel dependencies in MECOM-rearranged (r) AML: AML-194 cell line | OTHER 1.3198 uM; ACTIVE | Not recorded | pubchem.aid:2202237
|
| BET inhibitor-based combinations targeting novel dependencies in MECOM-rearranged (r) AML: HNT-34 cell line | OTHER 1.4809 uM; NOT_DETERMINED | Not recorded | pubchem.aid:2202234
|
| BET inhibitor-based combinations targeting novel dependencies in MECOM-rearranged (r) AML: MV-4-11 cell line | OTHER 0.7422 uM; ACTIVE | Not recorded | pubchem.aid:2202233
|
| BET inhibitor-based combinations targeting novel dependencies in MECOM-rearranged (r) AML: OCI-AML3 cell line | OTHER 1.3198 uM; ACTIVE | Not recorded | pubchem.aid:2202232
|
| BET inhibitor-based combinations targeting novel dependencies in MECOM-rearranged (r) AML: SET-2 cell line | OTHER 1.1763 uM; ACTIVE | Not recorded | pubchem.aid:2202231
|
| BET inhibitor-based combinations targeting novel dependencies in MECOM-rearranged (r) AML: UCSD-AML1 cell line | OTHER 0.8327 uM; ACTIVE | Not recorded | pubchem.aid:2202235
|
| Caspase-3/7 induction in CHO-K1 cells by small molecules, qHTS cell viability counter screen | OTHER 1.1883 uM; ACTIVE | Not recorded | pubchem.aid:1346979
|
| Caspase-3/7 induction in HepG2 cells by small molecules, qHTS cell viability counter screen | OTHER 1.496 uM; NOT_DETERMINED | Not recorded | pubchem.aid:1346981
|
| Cellular viability qHTS for adrenocortical cancer (ACC) cell line NCI-H295R | OTHER 0.7308 uM; NOT_DETERMINED | Not recorded | pubchem.aid:1963990
|
| Cellular viability qHTS for adrenocortical cancer (ACC) cell line NCI-H295R | OTHER 3.1623 uM; NOT_DETERMINED | Not recorded | pubchem.aid:1963990
|
| Cellular viability qHTS for adrenocortical cancer (ACC) cell line SW-13 | OTHER 14.1254 uM; NOT_DETERMINED | Not recorded | pubchem.aid:1963989
|
| Cellular viability qHTS for anaplastic thyroid cancer (ATC) cell line 8505C | OTHER 0.2897 uM; NOT_DETERMINED | Not recorded | pubchem.aid:2202553
|
| Cellular viability qHTS for anaplastic thyroid cancer (ATC) cell line 8505C | OTHER 3.0962 uM; ACTIVE | Not recorded | pubchem.aid:2202553
|
| Cellular viability qHTS for anaplastic thyroid cancer (ATC) cell line THJ-11T | OTHER 0.4592 uM; NOT_DETERMINED | Not recorded | pubchem.aid:2202552
|
| Cellular viability qHTS for anaplastic thyroid cancer (ATC) cell line THJ-11T | OTHER 3.0962 uM; NOT_DETERMINED | Not recorded | pubchem.aid:2202552
|
| Cellular viability qHTS for anaplastic thyroid cancer (ATC) cell line THJ-16T | OTHER 0.3251 uM; NOT_DETERMINED | Not recorded | pubchem.aid:2202551
|
| Cellular viability qHTS for anaplastic thyroid cancer (ATC) cell line THJ-16T | OTHER 2.1919 uM; ACTIVE | Not recorded | pubchem.aid:2202551
|
| Confirmation Concentration-Response Assay for Enhancers of SMN2 Splice Variant Expression | OTHER 0.1585 uM; NOT_DETERMINED | Not recorded | pubchem.aid:1740
|
| Confirmation Concentration-Response Assay for Enhancers of SMN2 Splice Variant Expression | OTHER 0.1 uM; NOT_DETERMINED | Not recorded | pubchem.aid:1740
|
| Confirmation Concentration-Response Assay for Enhancers of SMN2 Splice Variant Expression | OTHER 0.3548 uM; NOT_DETERMINED | Not recorded | pubchem.aid:1740
|
Elsewhere in the fleet
- AntibioticMech — CHEBI:168396 (same structure, same inchikey)
Explore across X-Mech
Open questions 2
shared-structure — This structure is reported by more than one MIBiG entry: BGC0000104, BGC0001677, BGC0002616, BGC0002619. Confirm they describe the same compound rather than an upstream cross-reference error.
curator-mpah-prime-reference-gene-model — How should the NRRL864 MpaH' canonical433-aa sequence be reconciled with deposited AJG44385.1/KM595305.1 (398aa)?
Provenance
| Source concept | Source | Version |
|---|---|---|
| BGC0000104 | MIBIG | 4 |
| BGC0002616 | MIBIG | 2 |
| BGC0002619 | MIBIG | 2 |
| BGC0001677 | MIBIG | 3 |
| CHEBI:168396 | CHEBI | 3-star |
This page is generated from data/natural_products/polyketides/mycophenolic-acid.yaml, which is generated from the committed inventories. Neither is edited by hand.