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The Chemical Entities of Biological Interest (ChEBI) ontology is downloaded weekly from EMBL-EBI at The data is made available under the Creative Commons License (CC BY 3.0, For more information see: Degtyarenko et al. (2008) ChEBI: a database and ontology for chemical entities of biological interest. Nucleic Acids Res. 36, D344–D350.

Term:trans-urocanic acid
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Accession:CHEBI:30817 term browser browse the term
Definition:A urocanic acid in which the double bond of the carboxyethene moiety has E configuration.
Synonyms:exact_synonym: (2E)-3-(1H-imidazol-4-yl)prop-2-enoic acid
 related_synonym: (2E)-3-(1H-imidazol-4-yl)acrylic acid;   (E)-3-(1H-imidazol-4-yl)-2-propenoic acid;   Formula=C6H6N2O2;   InChI=1S/C6H6N2O2/c9-6(10)2-1-5-3-7-4-8-5/h1-4H,(H,7,8)(H,9,10)/b2-1+;   InChIKey=LOIYMIARKYCTBW-OWOJBTEDSA-N;   SMILES=C(\\C=1N=CNC1)=C/C(=O)O;   Urocanic acid
 alt_id: CHEBI:46392;   CHEBI:9899
 xref: Beilstein:81403;   Beilstein:81405;   CAS:104-98-3;   CAS:3465-72-3;   DrugBank:DB01971;   HMDB:HMDB0034174;   KEGG:C00785
 xref_mesh: MESH:D014560
 xref: PDBeChem:URO;   PMID:9724745;   Patent:RU2445307;   Reaxys:81403;   Wikipedia:Urocanic_acid
 cyclic_relationship: is_conjugate_acid_of CHEBI:17771

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trans-urocanic acid term browser
Symbol Object Name Qualifiers Evidence Notes Source PubMed Reference(s) RGD Reference(s) Position
G Flg filaggrin decreases abundance ISO FLG mutant form results in decreased abundance of Urocanic Acid CTD PMID:24061166 NCBI chr 2:193,565,401...193,574,297 JBrowse link
G Ifng interferon gamma multiple interactions ISO IFNG protein affects the susceptibility to [Permethrin co-treated with Urocanic Acid] CTD PMID:14617103 NCBI chr 7:61,337,383...61,341,419
Ensembl chr 7:61,337,381...61,341,419
JBrowse link
G Tnf tumor necrosis factor affects response to substance ISO TNF protein affects the susceptibility to Urocanic Acid CTD PMID:14617103 NCBI chr20:5,189,382...5,192,000
Ensembl chr20:5,189,390...5,192,000
JBrowse link

Term paths to the root
Path 1
Term Annotations click to browse term
  CHEBI ontology 19816
    role 19764
      chemical role 19288
        photochemical role 233
          chromophore 53
            urocanic acid 3
              trans-urocanic acid 3
Path 2
Term Annotations click to browse term
  CHEBI ontology 19816
    subatomic particle 19814
      composite particle 19814
        hadron 19814
          baryon 19814
            nucleon 19814
              atomic nucleus 19814
                atom 19814
                  main group element atom 19702
                    p-block element atom 19702
                      carbon group element atom 19608
                        carbon atom 19597
                          organic molecular entity 19597
                            organic molecule 19522
                              organic cyclic compound 19320
                                organic heterocyclic compound 18432
                                  heteroarene 16467
                                    monocyclic heteroarene 13313
                                      azole 12480
                                        diazole 8135
                                          imidazoles 7663
                                            urocanic acid 3
                                              trans-urocanic acid 3
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