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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:ophiobolin A
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Accession:CHEBI:7777 term browser browse the term
Definition:A sesterterpenoid that is ophiobolane with a hydroxy group at position 3, oxo groups at positions 5 and 25, double bonds at positions 7-8 and 19-20, and an oxygen link between positions 14 and 18.
Synonyms:exact_synonym: (18R)-3-hydroxy-5-oxo-14,18-epoxyophiobola-7,19-dien-25-al
 related_synonym: (18R)-14,18-epoxy-3-hydroxy-5-oxoophiobola-7,19-dien-25-al;   Formula=C25H36O4;   InChI=1S/C25H36O4/c1-15(2)10-18-11-16(3)25(29-18)9-8-23(4)12-19-22(20(27)13-24(19,5)28)17(14-26)6-7-21(23)25/h6,10,14,16,18-19,21-22,28H,7-9,11-13H2,1-5H3/b17-6-/t16-,18-,19-,21+,22+,23+,24+,25-/m0/s1;   InChIKey=MWYYLZRWWNBROW-BDZRSQQBSA-N;   SMILES=[H][C@@]1(C[C@H](C)[C@]2(CC[C@]3(C)C[C@@]4([H])[C@]([H])(C(=O)C[C@@]4(C)O)\\C(C=O)=C/C[C@@]23[H])O1)C=C(C)C;   cochliobolin;   cochliobolin A;   ophiobolin
 xref: Beilstein:48792;   CAS:4611-05-6;   KEGG:C09145;   KNApSAcK:C00003460;   LIPID_MAPS_instance:LMPR0105050001
 xref_mesh: MESH:C040764

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ophiobolin A term browser
Symbol Object Name Qualifiers Evidence Notes Source PubMed Reference(s) RGD Reference(s) Position
G Abcb1a ATP binding cassette subfamily B member 1A multiple interactions ISO ophiobolin A inhibits the reaction [ABCB1 protein results in increased uptake of Digoxin] CTD PMID:16904803 NCBI chr 4:22,339,829...22,517,642
Ensembl chr 4:22,133,521...22,425,515
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Term paths to the root
Path 1
Term Annotations click to browse term
  CHEBI ontology 19785
    chemical entity 19785
      atom 19782
        nonmetal atom 19657
          carbon atom 19561
            organic molecular entity 19561
              olefinic compound 14455
                enal 1297
                  ophiobolin A 1
Path 2
Term Annotations click to browse term
  CHEBI ontology 19785
    subatomic particle 19782
      composite particle 19782
        hadron 19782
          baryon 19782
            nucleon 19782
              atomic nucleus 19782
                atom 19782
                  main group element atom 19670
                    p-block element atom 19670
                      carbon group element atom 19572
                        carbon atom 19561
                          organic molecular entity 19561
                            organic group 18493
                              organic divalent group 18486
                                organodiyl group 18486
                                  carbonyl group 18389
                                    carbonyl compound 18389
                                      carboxylic acid 18060
                                        carboacyl group 17346
                                          univalent carboacyl group 17346
                                            formyl group 7845
                                              aldehyde 7845
                                                alpha,beta-unsaturated aldehyde 1297
                                                  enal 1297
                                                    ophiobolin A 1
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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.