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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.

Term:S-adenosyl-S-carboxymethyl-L-homocysteine dizwitterion
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Accession:CHEBI:134278 term browser browse the term
Definition:A sulfonium betaine obtained by deprotonation of the carboxy groups and protonation of the amino group of S-adenosyl-S-carboxymethyl-L-homocysteine. Major microspecies at pH 7.3
Synonyms:related_synonym: Cx-SAM;   Formula=C16H22N6O7S;   InChI=1S/C16H22N6O7S/c17-7(16(27)28)1-2-30(4-9(23)24)3-8-11(25)12(26)15(29-8)22-6-21-10-13(18)19-5-20-14(10)22/h5-8,11-12,15,25-26H,1-4,17H2,(H3-,18,19,20,23,24,27,28)/t7-,8+,11+,12+,15+,30?/m0/s1;   InChIKey=VFFTYSZNZJBRBG-DYXDMYNLSA-N;   S-adenosyl-S-carboxymethyl-L-homocystein;   SMILES=C([S+](CC[C@H]([NH3+])C([O-])=O)C[C@H]1O[C@H]([C@H](O)[C@@H]1O)N2C=NC3=C2N=CN=C3N)C([O-])=O;   carboxy-S-adenosyl-L-methionine;   carboxy-SAM
 xref: MetaCyc:CPD-15403;   PMID:23676670
 cyclic_relationship: is_conjugate_base_of CHEBI:136699

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Path 1
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  CHEBI ontology 19775
    chemical entity 19775
      atom 19774
        nonmetal atom 19655
          sulfur atom 16388
            sulfur molecular entity 16388
              sulfonium compound 85
                sulfonium betaine 84
                  S-adenosyl-S-carboxymethyl-L-homocysteine dizwitterion 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19775
    subatomic particle 19774
      composite particle 19774
        hadron 19774
          baryon 19774
            nucleon 19774
              atomic nucleus 19774
                atom 19774
                  main group element atom 19665
                    p-block element atom 19665
                      p-block molecular entity 19665
                        carbon group molecular entity 19584
                          organic molecular entity 19574
                            organic molecule 19508
                              dipolar compound 1064
                                zwitterion 1063
                                  amino acid zwitterion 746
                                    alpha-amino acid zwitterion 0
                                      L-alpha-amino acid zwitterion 0
                                        S-adenosyl-S-carboxymethyl-L-homocysteine dizwitterion 0
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