Species | Target name | Source | Bibliographic reference |
---|---|---|---|
Homo sapiens | beta-site APP-cleaving enzyme 1 | Starlite/ChEMBL | No references |
Species | Potential target | Known druggable target/s | Ortholog Group |
---|---|---|---|
Schistosoma mansoni | memapsin-2 (A01 family) | Get druggable targets OG5_135830 | All targets in OG5_135830 |
Schistosoma japonicum | ko:K07747 beta-site APP-cleaving enzyme 2 (memapsin 1) [EC3.4.23.45], putative | Get druggable targets OG5_135830 | All targets in OG5_135830 |
Species | Potential target | Known druggable target | Length | Alignment span | Identity |
---|---|---|---|---|---|
Plasmodium falciparum | plasmepsin VII | beta-site APP-cleaving enzyme 1 | 401 aa | 352 aa | 21.3 % |
Activity type | Activity value | Assay description | Source | Reference |
---|---|---|---|---|
IC50 (binding) | = 2720 nM | BindingDB_Patents: Time Resolved Fluorescence Resonance Energy Transfer (TR-FRET) Assay. Potency of compounds were also measured using another fluorogenic substrate, TruPoint BACE1 Substrate Eu-CEVNLDAEFK-QSY 7 (SEQ ID NO:3) (AD0258, PerkinElmer, Boston Mass.). This substrate also has Swedish variant amino acids at the ß-secretase cleavage site, with a fluorescent europium (Eu) chelate coupled to one end and a quencher of europium fluorescence (QSY7) coupled to the other end via lysine. If the sample contains BACE1 activity, the Eu chelate and the quencher will be separated as the substrate is cleaved. The Eu-signal increases and it can be measured by time-resolved fluorometry, EnVision, 30 minutes after the substrate (final concentration 300 nM) was added. | ChEMBL. | No reference |
IC50 (binding) | = 2720 nM | Time Resolved Fluorescence Resonance Energy Transfer (TR-FRET) Assay | BINDINGDB. | No reference |
IC50 (binding) | = 2720 nM | BindingDB_Patents: Time Resolved Fluorescence Resonance Energy Transfer (TR-FRET) Assay. Potency of compounds were also measured using another fluorogenic substrate, TruPoint BACE1 Substrate Eu-CEVNLDAEFK-QSY 7 (SEQ ID NO:3) (AD0258, PerkinElmer, Boston Mass.). This substrate also has Swedish variant amino acids at the ß-secretase cleavage site, with a fluorescent europium (Eu) chelate coupled to one end and a quencher of europium fluorescence (QSY7) coupled to the other end via lysine. If the sample contains BACE1 activity, the Eu chelate and the quencher will be separated as the substrate is cleaved. The Eu-signal increases and it can be measured by time-resolved fluorometry, EnVision, 30 minutes after the substrate (final concentration 300 nM) was added. | ChEMBL. | No reference |
IC50 (binding) | = 2820 nM | BindingDB_Patents: Fluorescence Resonance Energy Transfer (FRET) Assay. Potency of test compounds were determined by measurement of their inhibition of BACE1 activity toward a fluorescent substrate. Experiments were performed by reference to the procedure as described in Ermolieff, et al. (Biochemistry 39:12450-12456 (2000), the teachings of which are incorporated hereby in their entirety). Briefly, the recombinant protease unit of BACE1 was prepared from E. coli expression as inclusion bodies, refolded, and purified as described in Lin, et al., (Proc. Nat. Acad. Sci. 97:1456-1460 (2000)). Fluorogenic substrate, MCA-SEVNLDAEFK(DNP)-NH2 (SEQ ID NO:1) was purchased. (M-2485, Bachem Americas, Torrance, Calif.). The substrate was derived from 10 amino acids of the human amyloid precursor protein (APP), with the Swedish variant amino acids at the beta-secretase cleavage site. The terminal amino acid was modified from arginine to lysine to facilitate derivatization with a functional group for detection by autofluorescence. | ChEMBL. | No reference |
IC50 (binding) | = 2820 nM | BindingDB_Patents: Fluorescence Resonance Energy Transfer (FRET) Assay. Potency of test compounds were determined by measurement of their inhibition of BACE1 activity toward a fluorescent substrate. Experiments were performed by reference to the procedure as described in Ermolieff, et al. (Biochemistry 39:12450-12456 (2000), the teachings of which are incorporated hereby in their entirety). Briefly, the recombinant protease unit of BACE1 was prepared from E. coli expression as inclusion bodies, refolded, and purified as described in Lin, et al., (Proc. Nat. Acad. Sci. 97:1456-1460 (2000)). Fluorogenic substrate, MCA-SEVNLDAEFK(DNP)-NH2 (SEQ ID NO:1) was purchased. (M-2485, Bachem Americas, Torrance, Calif.). The substrate was derived from 10 amino acids of the human amyloid precursor protein (APP), with the Swedish variant amino acids at the beta-secretase cleavage site. The terminal amino acid was modified from arginine to lysine to facilitate derivatization with a functional group for detection by autofluorescence. | ChEMBL. | No reference |
IC50 (binding) | = 2820 nM | Fluorescence Resonance Energy Transfer (FRET) Assay | BINDINGDB. | No reference |
Many chemical entities in TDR Targets come from high-throughput screenings with whole cells or tissue samples, and not all assayed compounds have been tested against a single a single target protein, probably because they get ruled out during screening process. Even if these compounds may have not been of interest in the original screening, they may come as interesting leads for other screening assays. Furthermore, we may be able to propose drug-target associations using chemical similarities and network patterns.