has role proline proline Prolin 115.06333 Reaxys:80809 PMID:22280966 PMID:22264337 PMID:16534801 C5H9NO2 DL-Proline OC(=O)C1CCCN1 KEGG:C16435 prolina InChI=1S/C5H9NO2/c7-5(8)4-2-1-3-6-4/h4,6H,1-3H2,(H,7,8) pyrrolidine-2-carboxylic acid CAS:609-36-9 Beilstein:80809 PMID:21400017 115.13050 CHEBI:26271 chebi_ontology ONIBWKKTOPOVIA-UHFFFAOYSA-N Hpro PMID:21903295 An alpha-amino acid that is pyrrolidine bearing a carboxy substituent at position 2. Wikipedia:Proline 0 Gmelin:26927 proline PMID:22770225 prolinate prolinium alpha-amino acid pyrrolidines human metabolite Daphnia magna metabolite