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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:17891 term browser browse the term
Definition:A molecular entity that can transfer ('donate') an electron, a pair of electrons, an atom or a group to another molecular entity.
Synonyms:related_synonym: Donator;   donneur
 alt_id: CHEBI:14202;   CHEBI:4697
 xref: KEGG:C01351

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    Path 1
    Term Annotations click to browse term
      CHEBI ontology 19911
        role 19887
          chemical role 19507
            donor 18931
              Bronsted acid + 18807
              Lewis base + 17823
              acyl donor + 29
              electron donor + 3039
              nitric oxide donor + 2780
    paths to the root