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Assay Detail

CHEMBL5733784

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Binding
Inhibition Assay: The NOSs isoform assays involved subjecting 3-8 to an oxyhemoglobin NO capture assay using a Biotek Gen5™ microplate reader. IC50 values for each compound were determined in duplicate or triplicate using dose-response curves with nine concentration points (1 pM-3 mM). The standard deviation of the assays were less than 15% with nNOS or iNOS, and less than 25% with eNOS. The inhibition constants (Ki) of these compounds were determined from the IC50 and Km values (rat nNOS=1.3 μM; murine iNOS=8.2 μM; bovine eNOS=1.7 μM) for all three NOS isoforms using the following relationship: Ki=IC50/(1+[S]/KM).The selectivity of antagonism of nNOS relative to iNOS or eNOS was determined by calculating the ratios of the Ki values with iNOS or eNOS to those with nNOS. Compounds 3-8, having various amino functional groups, were found to have moderate to excellent selectivity (50-2822 of e/n, 36-273 of i/n) and moderate to good binding affinity (24-4370 nM) to nNOS.
102
Total Activities
34
Compounds Tested
3
Activity Types
0
Assay Parameters

Assay Information

Assay Type Binding
Confidence 0 — Uncurated / Unknown
Curated By Autocuration

Target

Unchecked (CHEMBL612545)
Type UNCHECKED

Publication

Mammalian and bacterial nitric oxide synthase inhibitors
(2018)

Activity Statistics

Type Count Avg pChEMBL Best pChEMBL
Ki 34 4.91 5.85
kon 34 - -
k_off 34 - -

Compounds Tested

Compound Name Phase Activities Best pChEMBL
CHEMBL1766633 3 5.85
CHEMBL1615288 3 5.57
CHEMBL3262019 3 5.44
CHEMBL5801236 3 5.37
CHEMBL3262022 3 5.32
CHEMBL5916272 3 5.32
CHEMBL5905291 3 5.31
CHEMBL5929604 3 5.21
CHEMBL5826642 3 5.15
CHEMBL5755631 3 5.10
CHEMBL1615290 3 5.03
CHEMBL5788338 3 5.02
CHEMBL5777886 3 4.99
CHEMBL3586659 3 4.97
CHEMBL3586658 3 4.97
CHEMBL3586661 3 4.89
CHEMBL3262018 3 4.84
CHEMBL3262024 3 4.80
CHEMBL3586662 3 4.80
CHEMBL5852639 3 4.75
CHEMBL3586660 3 4.75
CHEMBL3262025 3 4.71
CHEMBL3586656 3 4.69
CHEMBL5939111 3 4.62
CHEMBL3586664 3 4.60
CHEMBL3586663 3 4.52
CHEMBL5989313 3 4.51
CHEMBL6038257 3 4.42
CHEMBL6014794 3 4.40
CHEMBL3262026 3 4.16

Activity Data

Compound Name Type Rel. Value Units pChEMBL
CHEMBL1766633 Ki = 1410.0 nM 5.85
CHEMBL1615288 Ki = 2680.0 nM 5.57
CHEMBL3262019 Ki = 3610.0 nM 5.44
CHEMBL5801236 Ki = 4288.0 nM 5.37
CHEMBL5916272 Ki = 4836.0 nM 5.32
CHEMBL3262022 Ki = 4770.0 nM 5.32
CHEMBL5905291 Ki = 4892.0 nM 5.31
CHEMBL5929604 Ki = 6212.0 nM 5.21
CHEMBL5826642 Ki = 7075.0 nM 5.15
CHEMBL5755631 Ki = 7890.0 nM 5.10
CHEMBL1615290 Ki = 9400.0 nM 5.03
CHEMBL5788338 Ki = 9582.0 nM 5.02
CHEMBL5777886 Ki = 10270.0 nM 4.99
CHEMBL3586659 Ki = 10680.0 nM 4.97
CHEMBL3586658 Ki = 10675.0 nM 4.97
CHEMBL3586661 Ki = 12910.0 nM 4.89
CHEMBL3262018 Ki = 14390.0 nM 4.84
CHEMBL3586662 Ki = 15940.0 nM 4.80
CHEMBL3262024 Ki = 16000.0 nM 4.80
CHEMBL3586660 Ki = 17742.0 nM 4.75
CHEMBL5852639 Ki = 17870.0 nM 4.75
CHEMBL3262025 Ki = 19417.0 nM 4.71
CHEMBL3586656 Ki = 20240.0 nM 4.69
CHEMBL5939111 Ki = 23700.0 nM 4.62
CHEMBL3586664 Ki = 24950.0 nM 4.60
CHEMBL3586663 Ki = 30238.0 nM 4.52
CHEMBL5989313 Ki = 31096.0 nM 4.51
CHEMBL6038257 Ki = 37605.0 nM 4.42
CHEMBL6014794 Ki = 39944.0 nM 4.40
CHEMBL3262026 Ki = 68520.0 nM 4.16
CHEMBL3262017 Ki = 70900.0 nM 4.15
CHEMBL3262023 k_off = - s-1 -
CHEMBL3262022 k_off = - s-1 -
CHEMBL3262022 kon = - -
CHEMBL1615288 kon = - -
CHEMBL3262023 Ki = 133174.0 nM -
CHEMBL1615290 kon = - -
CHEMBL3262019 k_off = - s-1 -
CHEMBL3262019 kon = - -
CHEMBL1615290 k_off = - s-1 -
CHEMBL3262025 kon = - -
CHEMBL3262018 k_off = - s-1 -
CHEMBL3262025 k_off = - s-1 -
CHEMBL3262018 kon = - -
CHEMBL3262017 k_off = - s-1 -
CHEMBL3262017 kon = - -
CHEMBL3262026 kon = - -
CHEMBL5905291 k_off = - s-1 -
CHEMBL3262024 k_off = - s-1 -
CHEMBL3262026 k_off = - s-1 -