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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:29103 term browser browse the term
Definition:A monoatomic monocation obtained from potassium.
Synonyms:exact_synonym: potassium cation;   potassium(1+) ion;   potassium(I) cation
 related_synonym: Formula=K;   InChI=1S/K/q+1;   InChIKey=NPYPAHLBTDXSSS-UHFFFAOYSA-N;   K+;   POTASSIUM ION;   SMILES=[K+]
 alt_id: CHEBI:26219;   CHEBI:49685;   CHEBI:8345
 xref: CAS:24203-36-9;   Gmelin:15203;   KEGG:C00238;   KEGG:D08403;   PDBeChem:K

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    Path 1
    Term Annotations click to browse term
      CHEBI ontology 19812
        role 19784
          biological role 19782
            biochemical role 19495
              cofactor 16082
                potassium(1+) 4956
                  potassium salt + 4956
    Path 2
    Term Annotations click to browse term
      CHEBI ontology 19812
        subatomic particle 19810
          composite particle 19810
            hadron 19810
              baryon 19810
                nucleon 19810
                  atomic nucleus 19810
                    atom 19810
                      main group element atom 19755
                        main group molecular entity 19755
                          s-block molecular entity 19605
                            alkali metal molecular entity 12181
                              potassium molecular entity 4956
                                elemental potassium 4956
                                  potassium(1+) 4956
                                    potassium salt + 4956
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