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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:144474 term browser browse the term
Definition:A tripeptide composed of L-lysine, L-serine and L-tryptophan joined in sequence by peptide linkages.
Synonyms:exact_synonym: L-lysyl-L-seryl-L-tryptophan
 related_synonym: Formula=C20H29N5O5;   InChI=1S/C20H29N5O5/c21-8-4-3-6-14(22)18(27)25-17(11-26)19(28)24-16(20(29)30)9-12-10-23-15-7-2-1-5-13(12)15/h1-2,5,7,10,14,16-17,23,26H,3-4,6,8-9,11,21-22H2,(H,24,28)(H,25,27)(H,29,30)/t14-,16-,17-/m0/s1;   InChIKey=UIJVKVHLCQSPOJ-XIRDDKMYSA-N;   K-S-W;   KSW;   L-Lys-L-Ser-L-Trp;   SMILES=C(=O)([C@@H](N)CCCCN)N[C@H](C(=O)N[C@H](C(=O)O)CC=1C=2C=CC=CC2NC1)CO
 alt_id: CHEBI:144616

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Term paths to the root
Path 1
Term Annotations click to browse term
  CHEBI ontology 19816
    role 19764
      application 19426
        pharmaceutical 19301
          drug 19301
            nutraceutical 12621
              L-tryptophan 7
                Lys-Ser-Trp 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19816
    subatomic particle 19814
      composite particle 19814
        hadron 19814
          baryon 19814
            nucleon 19814
              atomic nucleus 19814
                atom 19814
                  main group element atom 19702
                    p-block element atom 19702
                      carbon group element atom 19608
                        carbon atom 19597
                          organic molecular entity 19597
                            organic group 18537
                              organic divalent group 18530
                                organodiyl group 18530
                                  carbonyl group 18436
                                    carbonyl compound 18436
                                      carboxylic acid 18114
                                        monocarboxylic acid 17476
                                          fatty acid 15990
                                            saturated fatty acid 15965
                                              straight-chain saturated fatty acid 15416
                                                hexanoic acid 74
                                                  lysine 29
                                                    L-lysine 29
                                                      Lys-Ser-Trp 0
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