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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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Term paths to the root
Path 1
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  CHEBI ontology 19816
    role 19764
      chemical role 19288
        donor 18421
          Bronsted acid + 18289
          Lewis base + 16959
          acyl donor + 28
          electron donor + 2548
          nitric oxide donor + 2741
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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.