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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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Your selection has 4941 annotated objects. The maximum number of objects that can be shown is 2000. The list is too large to display.

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    Path 1
    Term Annotations click to browse term
      CHEBI ontology 20089
        role 20042
          biological role 20011
            biochemical role 19671
              cofactor 15980
                potassium(1+) 4941
                  potassium salt + 4937
    Path 2
    Term Annotations click to browse term
      CHEBI ontology 20089
        subatomic particle 20058
          composite particle 20058
            hadron 20088
              baryon 20088
                nucleon 20088
                  atomic nucleus 20088
                    atom 20058
                      main group element atom 19960
                        main group molecular entity 19960
                          s-block molecular entity 19784
                            alkali metal molecular entity 11946
                              potassium molecular entity 4941
                                elemental potassium 4941
                                  potassium(1+) 4941
                                    potassium salt + 4937
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