<?xml version='1.0' encoding='utf-8'?>
<activity><action_type/><activity_comment/><activity_id>750779</activity_id><activity_properties/><assay_chembl_id>CHEMBL664926</assay_chembl_id><assay_description>Inhibitory activity against hydrolysis of Gly-Pro-pNa by CD26 (Dipeptidyl peptidase IV) purified from CEM H01 cells</assay_description><assay_type>B</assay_type><assay_variant_accession/><assay_variant_mutation/><bao_endpoint>BAO_0000190</bao_endpoint><bao_format>BAO_0000219</bao_format><bao_label>cell-based format</bao_label><canonical_smiles>CCCC[S+](CCCC)Cc1ccc2cc1C(=O)NCC(=O)NCC(=O)NCCCC[C@H](N)C(=O)N1CCC[C@H]1C(=O)N2.O=C(O)C(F)(F)F.O=C([O-])C(F)(F)F</canonical_smiles><data_validity_comment/><data_validity_description/><document_chembl_id>CHEMBL1131574</document_chembl_id><document_journal>J Med Chem</document_journal><document_year>1998</document_year><ligand_efficiency><bei>12.46</bei><le>0.24</le><lle>5.89</lle><sei>4.73</sei></ligand_efficiency><modality/><molecule_chembl_id>CHEMBL67679</molecule_chembl_id><molecule_pref_name/><parent_molecule_chembl_id>CHEMBL1179286</parent_molecule_chembl_id><pchembl_value>7.70</pchembl_value><potential_duplicate/><qudt_units>http://www.openphacts.org/units/Nanomolar</qudt_units><record_id>114983</record_id><relation>=</relation><src_id>1</src_id><standard_flag>1</standard_flag><standard_relation>=</standard_relation><standard_text_value/><standard_type>IC50</standard_type><standard_units>nM</standard_units><standard_upper_value/><standard_value>20.0</standard_value><target_chembl_id>CHEMBL284</target_chembl_id><target_organism>Homo sapiens</target_organism><target_pref_name>Dipeptidyl peptidase 4</target_pref_name><target_tax_id>9606</target_tax_id><text_value/><toid/><type>IC50</type><units>uM</units><uo_units>UO_0000065</uo_units><upper_value/><value>0.02</value></activity>