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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.

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Accession:CHEBI:85503 term browser browse the term
Definition:An iron coordination entity consisting of two carbonyl and one cyano group coordinated to a central iron atom. The product of HydG, which is then passed onto HydE and HydF to form the H-cluster of the [FeFe]-hydrogenase enzymes.
Synonyms:related_synonym: Formula=C3FeNO2;   InChI=1S/CN.2CO.Fe/c3*1-2;;   InChIKey=PYKQUFXSIZQZMT-UHFFFAOYSA-N;   SMILES=N#C[Fe](C#[O])C#[O];   complex B
 xref: PMID:25605932

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Path 1
Term Annotations click to browse term
  CHEBI ontology 20056
    chemical entity 20055
      molecular entity 20054
        transition element molecular entity 16662
          transition element coordination entity 11254
            iron coordination entity 376
              Fe(CO)2(CN) 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 20056
    subatomic particle 20054
      composite particle 20054
        hadron 20054
          baryon 20054
            nucleon 20054
              atomic nucleus 20054
                atom 20054
                  metal atom 17583
                    transition element atom 16956
                      d-block element atom 16947
                        iron group element atom 882
                          iron atom 860
                            iron molecular entity 860
                              iron coordination entity 376
                                Fe(CO)2(CN) 0
paths to the root