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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:137728 term browser browse the term
Definition:A tetrapeptide composed of L-tryptophan, L-methione, L-aspartic acid and L-phenylalaninamide residues joined in sequence.
Synonyms:exact_synonym: L-tryptophyl-L-methionyl-L-alpha-aspartyl-L-phenylalaninamide
 related_synonym: CCK-4;   CCRIS 3246;   Cholecystokinin tetrapeptide;   Formula=C29H36N6O6S;   Gastrin tetrapeptide;   Gastrin tetrapeptide amide;   InChI=1S/C29H36N6O6S/c1-42-12-11-22(33-27(39)20(30)14-18-16-32-21-10-6-5-9-19(18)21)28(40)35-24(15-25(36)37)29(41)34-23(26(31)38)13-17-7-3-2-4-8-17/h2-10,16,20,22-24,32H,11-15,30H2,1H3,(H2,31,38)(H,33,39)(H,34,41)(H,35,40)(H,36,37)/t20-,22-,23-,24-/m0/s1;   InChIKey=RGYLYUZOGHTBRF-BIHRQFPBSA-N;   L-Trp-L-Met-L-Asp-L-Phe-NH(2);   L-tryptophyl-L-methionyl-L-aspartyl-L-phenylalaninamide;   SMILES=C(=O)([C@@H](N)CC1=CNC2=C1C=CC=C2)N[C@H](C(=O)N[C@H](C(=O)N[C@@H](CC=3C=CC=CC3)C(N)=O)CC(O)=O)CCSC;   Trp-Met-Asp-Phe-NH(2);   WMDF-NH(2);   cholecystokinin-4
 alt_id: CHEBI:32210
 xref: CAS:1947-37-1;   HMDB:HMDB0005775;   KEGG:D01456;   PMID:20198494;   PMID:20387390;   PMID:22414867;   PMID:22632477;   PMID:22939006;   PMID:23059050;   PMID:23463151;   PMID:24342768;   PMID:24939759;   PMID:25106129;   PMID:25522396;   PMID:26235955;   PMID:26752621;   PMID:27871026;   PMID:28328228;   Reaxys:24193542;   Reaxys:4223651;   Wikipedia:CCK-4

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  CHEBI ontology 19808
    chemical entity 19808
      group 19729
        organic group 18725
          amino-acid residue 9445
            peptide 9444
              peptidyl amide 88
                tetragastrin 0
Path 2
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  CHEBI ontology 19808
    subatomic particle 19807
      composite particle 19807
        hadron 19807
          baryon 19807
            nucleon 19807
              atomic nucleus 19807
                atom 19807
                  main group element atom 19704
                    p-block element atom 19704
                      carbon group element atom 19626
                        carbon atom 19616
                          organic molecular entity 19616
                            organic group 18725
                              organic divalent group 18716
                                organodiyl group 18716
                                  carbonyl group 18664
                                    carbonyl compound 18664
                                      carboxylic acid 18361
                                        carboacyl group 17481
                                          univalent carboacyl group 17481
                                            carbamoyl group 17297
                                              carboxamide 17297
                                                peptide 9444
                                                  oligopeptide 1264
                                                    tetrapeptide 37
                                                      tetragastrin 0
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