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Assay Detail

CHEMBL5737006

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Binding
SSTR4 I-125 Somatostatin Competition Binding Assay: This membrane-based assay measures the ability of compounds to competitively inhibit binding of I-125 labeled somatostatin to SSTR4 in membranes from CHO-K1 that overexpress SSTR4. Membranes from CHO-K1 cells overexpressing SSTR4 are purchased from Perkin Elmer (catalog number ES-524-M400UA). Test compounds are suspended in DMSO and then diluted in assay buffer (25 mM HEPES pH 7.4, 10 mM MgCl2, 1 mM CaCl2), 0.5% BSA) plus 0.2 nM I-125 labeled somatostatin (Perkin Elmer catalog number NEX389). Fifty μL of compound/I-125 somatostatin in assay buffer are added per well to 96-well poly-propylene plate. Then 1 μg of SSTR4 membranes in 50 μL assay buffer are added per well. The Plate is incubated for 60 minutes at room temperature. FilterMat A filters (Perkin Elmer catalog number 1450-421) are pre-soaked in 0.5% PEI (Sigma catalog number P3143). The contents of the assay plate are transferred to filters with a TomTech harvester and washed 5 times with 20 mM HEPES, 100 mM NaCl. The filters are dried in a microwave oven then transferred to sample bag containing a scintillator sheet (Perkin Elmer catalog number 1450-441). The scintillator sheets are melted to filters using a heat block. The filters are then read in a MicroBeta scintillation counter. Binding Ki curves are generated using Activity Base for Screening Data Management and the results are reported as pIC50.
342
Total Activities
109
Compounds Tested
3
Activity Types
0
Assay Parameters

Assay Information

Assay Type Binding
Confidence 8 — Homologous single protein target
Curated By Autocuration

Target

Somatostatin receptor type 4 (CHEMBL1853)
Type SINGLE PROTEIN
Organism Homo sapiens

Publication

Piperidinyl-3-(aryloxy)propanamides and propanoates
(2021)

Activity Statistics

Type Count Avg pChEMBL Best pChEMBL
IC50 114 7.02 8.80
kon 114 - -
k_off 114 - -

Compounds Tested

Compound Name Phase Activities Best pChEMBL
CHEMBL5745719 3 8.80
CHEMBL6064025 3 8.40
CHEMBL5790086 3 8.30
CHEMBL6062387 3 8.10
CHEMBL6048061 3 8.00
CHEMBL5862026 3 8.00
CHEMBL5801992 3 7.80
CHEMBL5939370 3 7.80
CHEMBL6027712 3 7.80
CHEMBL5933642 3 7.70
CHEMBL5977345 3 7.70
CHEMBL6000561 3 7.70
CHEMBL5802392 3 7.70
CHEMBL5886715 3 7.70
CHEMBL5982226 3 7.60
CHEMBL5815326 3 7.60
CHEMBL5980093 3 7.60
CHEMBL6040848 3 7.60
CHEMBL5858085 3 7.60
CHEMBL6005000 3 7.60
CHEMBL6052010 3 7.60
CHEMBL6055274 3 7.60
CHEMBL5920986 6 7.50
CHEMBL5829751 3 7.50
CHEMBL5901530 3 7.50
CHEMBL5875145 3 7.40
CHEMBL5894549 3 7.40
CHEMBL5773674 3 7.40
CHEMBL5999769 3 7.40
CHEMBL5934843 3 7.40

Activity Data

Compound Name Type Rel. Value Units pChEMBL
CHEMBL5745719 IC50 = 1.58 nM 8.80
CHEMBL6064025 IC50 = 3.98 nM 8.40
CHEMBL5790086 IC50 = 5.01 nM 8.30
CHEMBL6062387 IC50 = 7.94 nM 8.10
CHEMBL5862026 IC50 = 10.0 nM 8.00
CHEMBL6048061 IC50 = 10.0 nM 8.00
CHEMBL6027712 IC50 = 15.8 nM 7.80
CHEMBL5939370 IC50 = 15.8 nM 7.80
CHEMBL5801992 IC50 = 15.8 nM 7.80
CHEMBL5802392 IC50 = 20.0 nM 7.70
CHEMBL5933642 IC50 = 20.0 nM 7.70
CHEMBL6000561 IC50 = 20.0 nM 7.70
CHEMBL5886715 IC50 = 20.0 nM 7.70
CHEMBL5977345 IC50 = 20.0 nM 7.70
CHEMBL5815326 IC50 = 25.1 nM 7.60
CHEMBL5980093 IC50 = 25.1 nM 7.60
CHEMBL6040848 IC50 = 25.1 nM 7.60
CHEMBL5858085 IC50 = 25.1 nM 7.60
CHEMBL6055274 IC50 = 25.1 nM 7.60
CHEMBL5982226 IC50 = 25.1 nM 7.60
CHEMBL6005000 IC50 = 25.1 nM 7.60
CHEMBL6052010 IC50 = 25.1 nM 7.60
CHEMBL5829751 IC50 = 31.6 nM 7.50
CHEMBL5920986 IC50 = 31.6 nM 7.50
CHEMBL5901530 IC50 = 31.6 nM 7.50
CHEMBL5999769 IC50 = 39.8 nM 7.40
CHEMBL5748655 IC50 = 39.8 nM 7.40
CHEMBL5875145 IC50 = 39.8 nM 7.40
CHEMBL5894549 IC50 = 39.8 nM 7.40
CHEMBL5800615 IC50 = 39.8 nM 7.40
CHEMBL5934843 IC50 = 39.8 nM 7.40
CHEMBL5773674 IC50 = 39.8 nM 7.40
CHEMBL5899589 IC50 = 39.8 nM 7.40
CHEMBL5869711 IC50 = 50.1 nM 7.30
CHEMBL6038753 IC50 = 50.1 nM 7.30
CHEMBL5785607 IC50 = 50.1 nM 7.30
CHEMBL5851110 IC50 = 50.1 nM 7.30
CHEMBL5949740 IC50 = 50.1 nM 7.30
CHEMBL5933378 IC50 = 63.1 nM 7.20
CHEMBL5957831 IC50 = 63.1 nM 7.20
CHEMBL5818753 IC50 = 63.1 nM 7.20
CHEMBL5836617 IC50 = 63.1 nM 7.20
CHEMBL5807083 IC50 = 63.1 nM 7.20
CHEMBL5954140 IC50 = 63.1 nM 7.20
CHEMBL5801275 IC50 = 63.1 nM 7.20
CHEMBL5999051 IC50 = 63.1 nM 7.20
CHEMBL5841698 IC50 = 63.1 nM 7.20
CHEMBL5814161 IC50 = 63.1 nM 7.20
CHEMBL6027274 IC50 = 79.4 nM 7.10
CHEMBL5934849 IC50 = 79.4 nM 7.10