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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:91273 term browser browse the term
Definition:An N-acyl-amino acid that is lysine in which one of the amino nitrogens at position N6 is replaced by a 3-methyl-3,4-dihydro-2H-pyrrole-2-carbonyl group.
Synonyms:exact_synonym: N(6)-(3-methyl-3,4-dihydro-2H-pyrrole-2-carbonyl)lysine
 related_synonym: Formula=C12H21N3O3;   InChI=1S/C12H21N3O3/c1-8-5-7-14-10(8)11(16)15-6-3-2-4-9(13)12(17)18/h7-10H,2-6,13H2,1H3,(H,15,16)(H,17,18);   InChIKey=ZFOMKMMPBOQKMC-UHFFFAOYSA-N;   SMILES=C(=O)(C(N)CCCCNC(C1C(CC=N1)C)=O)O

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Path 1
Term Annotations click to browse term
  CHEBI ontology 19841
    role 19792
      application 19465
        refrigerant 17488
          ammonia 17015
            organic amino compound 17014
              amino acid 14108
                N-acyl-amino acid 10042
                  pyrrolysine 0
                    L-pyrrolysine 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19841
    subatomic particle 19839
      composite particle 19839
        hadron 19839
          baryon 19839
            nucleon 19839
              atomic nucleus 19839
                atom 19839
                  main group element atom 19732
                    p-block element atom 19732
                      carbon group element atom 19636
                        carbon atom 19625
                          organic molecular entity 19625
                            organic group 18537
                              organic divalent group 18528
                                organodiyl group 18528
                                  carbonyl group 18436
                                    carbonyl compound 18436
                                      carboxylic acid 18113
                                        monocarboxylic acid 17483
                                          fatty acid 16001
                                            saturated fatty acid 15974
                                              straight-chain saturated fatty acid 15424
                                                hexanoic acid 73
                                                  lysine 28
                                                    lysine derivative 1
                                                      pyrrolysine 0
                                                        L-pyrrolysine 0
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