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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:(Z)-2-aminobutenoic acid
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Accession:CHEBI:18820 term browser browse the term
Definition:A 2,3-dehydroamino acid resulting from the formal elimination of water from the side-chain of threonine.
Synonyms:related_synonym: (2Z)-2-aminobut-2-enoic acid;   (Z)-dehydrobutyrine;   (Z)2,3-didehydrobutyrine;   2-Ammoniobut-2-enoate;   Formula=C4H7NO2;   InChI=1S/C4H7NO2/c1-2-3(5)4(6)7/h2H,5H2,1H3,(H,6,7)/b3-2-;   InChIKey=PAWSVPVNIXFKOS-IHWYPQMZSA-N;   SMILES=C\\C=C(/N)C(O)=O;   alpha,beta-Dehydroaminobutyric acid;   anhydrothreonine
 xref: CAS:71018-10-5;   KEGG:C17234;   PDBeChem:DBU

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  CHEBI ontology 19773
    role 19723
      application 19413
        refrigerant 17474
          ammonia 17008
            organic amino compound 17007
              amine 7796
                enamine 29
                  (Z)-2-aminobutenoic acid 0
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  CHEBI ontology 19773
    subatomic particle 19771
      composite particle 19771
        hadron 19771
          baryon 19771
            nucleon 19771
              atomic nucleus 19771
                atom 19771
                  main group element atom 19665
                    p-block element atom 19665
                      carbon group element atom 19583
                        carbon atom 19573
                          organic molecular entity 19573
                            organic group 18603
                              organic divalent group 18594
                                organodiyl group 18594
                                  carbonyl group 18507
                                    carbonyl compound 18507
                                      carboxylic acid 18159
                                        monocarboxylic acid 17527
                                          fatty acid 16006
                                            unsaturated fatty acid 947
                                              monounsaturated fatty acid 447
                                                butenoic acid 31
                                                  2-butenoic acid 31
                                                    (Z)-2-aminobutenoic acid 0
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