| + |
atropine | down-regulates activity 
chemical inhibition
|
CHRM4 |
0.8 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-258390 |
|
|
Cricetulus griseus |
CHO Cell |
| pmid |
sentence |
| 2704370 |
In order to investigate the pharmacological properties of the individual muscarinic receptors, we have transfected each of these genes into Chinese hamster ovary cells (CHO-K1) and have established stable cell lines expressing each receptor. In the present study we have examined the antagonist binding properties of each muscarinic receptor. Antagonists were chosen that had previously been proposed to be selective for muscarinic receptor subtypes and included pirenzepine, AF-DX 116, methoctramine, dicyclomine, hexohydrodifenidol, hexahydrosiladifenidol, hexocyclium, and silahexocyclium. |
|
| Publications: |
1 |
Organism: |
Cricetulus Griseus |
| + |
carbachol | up-regulates activity 
chemical activation
|
CHRM4 |
0.8 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-258621 |
|
|
Cricetulus griseus |
CHO Cell |
| pmid |
sentence |
| 9224827 |
We investigated whether the allosteric modulators can also increase the affinity of receptors for their agonists. Twelve agonists and five allosteric modulators were tested in experiments on membranes of CHO cells that had been stably transfected with genes for the M1-M4 receptor subtypes. Affinities of agonists for the M1–M4 receptor subtypes were determined according to the ability of the agonist to inhibit [3H]NMS binding in the presence of 0.5 mM GTP; in this way, the low affinity binding of agonists was measured.The computed pKi and nH values are summarized in Table 2. |
|
| Publications: |
1 |
Organism: |
Cricetulus Griseus |
| + |
amitriptyline | down-regulates activity
chemical inhibition
|
CHRM4 |
0.8 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-258704 |
|
|
Cricetulus griseus |
|
| pmid |
sentence |
| 8100134 |
Antagonism of the five cloned human muscarinic cholinergic receptors expressed in CHO-K1 cells by antidepressants and antihistaminics. Competition between [‘H]QNB and the antidepressant compounds (Table 1) showed that at the ml subtype the most potent drugs were amitriptyline > dothiepin > doxepin = nortriptyline; at the m2 receptor, amitriptyline > imipramine > nortriptyline = dothiepin; at the m3 recep- tor, amitriptyline > dothiepin > nortriptyline; at the m4 receptor, amitriptyline > dothiepin > doxepin = nortrip- tyline; and at the m5 receptor, amitriptyline > doxepin > imipramine. |
|
| Publications: |
1 |
Organism: |
Cricetulus Griseus |
| + |
trimethyl-[(5-methyl-2-furanyl)methyl]ammonium | up-regulates activity
chemical activation
|
CHRM4 |
0.8 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-258646 |
|
|
Cricetulus griseus |
|
| pmid |
sentence |
| 9224827 |
We investigated whether the allosteric modulators can also increase the affinity of receptors for their agonists. Twelve agonists and five allosteric modulators were tested in experiments on membranes of CHO cells that had been stably transfected with genes for the M1-M4 receptor subtypes. Affinities of agonists for the M1–M4 receptor subtypes were determined according to the ability of the agonist to inhibit [3H]NMS binding in the presence of 0.5 mM GTP; in this way, the low affinity binding of agonists was measured.The computed pKi and nH values are summarized in Table 2. |
|
| Publications: |
1 |
Organism: |
Cricetulus Griseus |
| + |
Oxotremorine | up-regulates activity
chemical activation
|
CHRM4 |
0.8 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-258650 |
|
|
Cricetulus griseus |
CHO Cell |
| pmid |
sentence |
| 9224827 |
We investigated whether the allosteric modulators can also increase the affinity of receptors for their agonists. Twelve agonists and five allosteric modulators were tested in experiments on membranes of CHO cells that had been stably transfected with genes for the M1-M4 receptor subtypes. Affinities of agonists for the M1–M4 receptor subtypes were determined according to the ability of the agonist to inhibit [3H]NMS binding in the presence of 0.5 mM GTP; in this way, the low affinity binding of agonists was measured.The computed pKi and nH values are summarized in Table 2. |
|
| Publications: |
1 |
Organism: |
Cricetulus Griseus |
| + |
CHRM4 | up-regulates activity
binding
|
GNAI1 |
0.445 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-256686 |
|
|
Homo sapiens |
HEK-293A Cell |
| pmid |
sentence |
| 31160049 |
Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. | We defined positive coupling if any member of the subfamily scored LogRAi ≥ -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ≥ -1.0 for defining true couplings. | The score associated to this interaction has a LogRAi ≥ -1.0. |
|
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-281580 |
|
|
Homo sapiens |
HEK-293A Cell |
| pmid |
sentence |
| 31142646 |
Here, we directly assess coupling between 14 representative GPCRs and 16 Gα subunits, including one wild-type Gα subunit from each of the four families and 12 chimeras with exchanged C termini. We use a sensitive bioluminescence resonance energy transfer (BRET) assay that provides control over both ligand and nucleotide binding, and allows direct comparison across G protein families. We find that the Gs- and Gq-coupled receptors we studied are relatively promiscuous and always couple to some extent to Gi1 heterotrimers. In contrast, Gi-coupled receptors are more selective. Our results with Gα subunit chimeras show that the Gα C terminus is important for coupling selectivity, but no more so than the Gα subunit core. |
|
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-282035 |
|
|
Homo sapiens |
HEK-293A Cell |
| pmid |
sentence |
| 35302493 |
This study describes the development and validation of a genetically encoded ebBRET-based biosensor platform allowing live-cell mapping of GPCR-G protein coupling preferences covering 12 heterotrimeric G proteins. Profiling of 100 therapeutically relevant human GPCRs resulted in 1500 pathway-specific concentration-response curves and revealed a great diversity of coupling profiles ranging from exquisite selectivity to broad promiscuity.In our dataset, which is the first using unmodified GPCRs and Gα proteins (except for Gs), 29% of the receptors coupled to only one family, whereas others displayed more promiscuity by coupling to 2, 3, or 4 families (36%, 25%, and 10%, respectively). |
|
| Publications: |
3 |
Organism: |
Homo Sapiens |
| + |
CHRM4 | up-regulates activity
binding
|
GNAO1 |
0.367 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-256965 |
|
|
Homo sapiens |
HEK-293A Cell |
| pmid |
sentence |
| 31160049 |
Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. | We defined positive coupling if any member of the subfamily scored LogRAi ≥ -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ≥ -1.0 for defining true couplings. | The score associated to this interaction has a LogRAi ≥ -1.0. |
|
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-282358 |
|
|
Homo sapiens |
HEK-293A Cell |
| pmid |
sentence |
| 37742189 |
Here, we quantitatively measure the enzymatic activity of GPCRs in living cells and reveal the G protein selectivity of 124 GPCRs with the exact rank order of their G protein preference. Using this information, we establish a classification of GPCRs by functional selectivity, discover the existence of a G12/13-coupled receptor, G15-coupled receptors, and a variety of subclasses for Gi/o-, Gq-, and Gs-coupled receptors, culminating in development of the predictive algorithm of G protein selectivity. |
|
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-282092 |
|
|
Homo sapiens |
HEK-293A Cell |
| pmid |
sentence |
| 35302493 |
This study describes the development and validation of a genetically encoded ebBRET-based biosensor platform allowing live-cell mapping of GPCR-G protein coupling preferences covering 12 heterotrimeric G proteins. Profiling of 100 therapeutically relevant human GPCRs resulted in 1500 pathway-specific concentration-response curves and revealed a great diversity of coupling profiles ranging from exquisite selectivity to broad promiscuity.In our dataset, which is the first using unmodified GPCRs and Gα proteins (except for Gs), 29% of the receptors coupled to only one family, whereas others displayed more promiscuity by coupling to 2, 3, or 4 families (36%, 25%, and 10%, respectively). |
|
| Publications: |
3 |
Organism: |
Homo Sapiens |
| + |
(+)-pilocarpine | up-regulates activity
chemical activation
|
CHRM4 |
0.8 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-258628 |
|
|
Cricetulus griseus |
CHO Cell |
| pmid |
sentence |
| 9224827 |
We investigated whether the allosteric modulators can also increase the affinity of receptors for their agonists. Twelve agonists and five allosteric modulators were tested in experiments on membranes of CHO cells that had been stably transfected with genes for the M1-M4 receptor subtypes. Affinities of agonists for the M1–M4 receptor subtypes were determined according to the ability of the agonist to inhibit [3H]NMS binding in the presence of 0.5 mM GTP; in this way, the low affinity binding of agonists was measured.The computed pKi and nH values are summarized in Table 2. |
|
| Publications: |
1 |
Organism: |
Cricetulus Griseus |
| + |
arecoline | up-regulates activity
chemical activation
|
CHRM4 |
0.8 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-258638 |
|
|
Cricetulus griseus |
CHO Cell |
| pmid |
sentence |
| 9224827 |
We investigated whether the allosteric modulators can also increase the affinity of receptors for their agonists. Twelve agonists and five allosteric modulators were tested in experiments on membranes of CHO cells that had been stably transfected with genes for the M1-M4 receptor subtypes. Affinities of agonists for the M1–M4 receptor subtypes were determined according to the ability of the agonist to inhibit [3H]NMS binding in the presence of 0.5 mM GTP; in this way, the low affinity binding of agonists was measured.The computed pKi and nH values are summarized in Table 2. |
|
| Publications: |
1 |
Organism: |
Cricetulus Griseus |
| + |
bethanechol | up-regulates activity
chemical activation
|
CHRM4 |
0.8 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-258624 |
|
|
Cricetulus griseus |
CHO Cell |
| pmid |
sentence |
| 9224827 |
We investigated whether the allosteric modulators can also increase the affinity of receptors for their agonists. Twelve agonists and five allosteric modulators were tested in experiments on membranes of CHO cells that had been stably transfected with genes for the M1-M4 receptor subtypes. Affinities of agonists for the M1–M4 receptor subtypes were determined according to the ability of the agonist to inhibit [3H]NMS binding in the presence of 0.5 mM GTP; in this way, the low affinity binding of agonists was measured.The computed pKi and nH values are summarized in Table 2. |
|
| Publications: |
1 |
Organism: |
Cricetulus Griseus |
| + |
acetylcholine | up-regulates activity
chemical activation
|
CHRM4 |
0.8 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-258633 |
|
|
Cricetulus griseus |
CHO Cell |
| pmid |
sentence |
| 9224827 |
We investigated whether the allosteric modulators can also increase the affinity of receptors for their agonists. Twelve agonists and five allosteric modulators were tested in experiments on membranes of CHO cells that had been stably transfected with genes for the M1-M4 receptor subtypes. Affinities of agonists for the M1–M4 receptor subtypes were determined according to the ability of the agonist to inhibit [3H]NMS binding in the presence of 0.5 mM GTP; in this way, the low affinity binding of agonists was measured.The computed pKi and nH values are summarized in Table 2. |
|
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-257471 |
|
|
Homo sapiens |
HEK-293A Cell |
| pmid |
sentence |
| 31160049 |
Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. | We defined positive coupling if any member of the subfamily scored LogRAi ≥ -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ≥ -1.0 for defining true couplings. | The score associated to this interaction has a LogRAi ≥ -1.0. |
|
| Publications: |
2 |
Organism: |
Cricetulus Griseus, Homo Sapiens |
| + |
CHRM4 | up-regulates activity
binding
|
GNAI3 |
0.39 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-256829 |
|
|
Homo sapiens |
HEK-293A Cell |
| pmid |
sentence |
| 31160049 |
Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. | We defined positive coupling if any member of the subfamily scored LogRAi ≥ -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ≥ -1.0 for defining true couplings. | The score associated to this interaction has a LogRAi ≥ -1.0. |
|
| Publications: |
1 |
Organism: |
Homo Sapiens |
| + |
oxotremorine M | up-regulates activity
chemical activation
|
CHRM4 |
0.8 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-258657 |
|
|
Cricetulus griseus |
CHO Cell |
| pmid |
sentence |
| 9224827 |
We investigated whether the allosteric modulators can also increase the affinity of receptors for their agonists. Twelve agonists and five allosteric modulators were tested in experiments on membranes of CHO cells that had been stably transfected with genes for the M1-M4 receptor subtypes. Affinities of agonists for the M1–M4 receptor subtypes were determined according to the ability of the agonist to inhibit [3H]NMS binding in the presence of 0.5 mM GTP; in this way, the low affinity binding of agonists was measured.The computed pKi and nH values are summarized in Table 2. |
|
| Publications: |
1 |
Organism: |
Cricetulus Griseus |
| + |
sabcomeline | up-regulates activity
chemical activation
|
CHRM4 |
0.8 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-258675 |
|
|
Rattus norvegicus |
|
| pmid |
sentence |
| 9399977 |
SB 202026 (R-(Z)-(+)-alpha-(methoxyimino)-1-azabicyclo[2.2.2] octane-3-acetonitrile) displaced [3H]-oxotremorine-M from muscarinic receptors in the rat brain with high affinity (IC50 = 14 nM), a potency similar to that of oxotremorine-M itself (IC50 = 13 nM), but exhibited low affinity for cholinergic nicotinic receptors and other neuroreceptors. In studies using cloned human muscarinic receptors, SB 202026 possessed approximately equal affinity in displacing [3H]-quinuclidinyl benzilate from all muscarinic receptor subtypes |
|
| Publications: |
1 |
Organism: |
Rattus Norvegicus |
| + |
furtrethonium | up-regulates activity
chemical activation
|
CHRM4 |
0.8 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-258644 |
|
|
Cricetulus griseus |
CHO Cell |
| pmid |
sentence |
| 9224827 |
We investigated whether the allosteric modulators can also increase the affinity of receptors for their agonists. Twelve agonists and five allosteric modulators were tested in experiments on membranes of CHO cells that had been stably transfected with genes for the M1-M4 receptor subtypes. Affinities of agonists for the M1–M4 receptor subtypes were determined according to the ability of the agonist to inhibit [3H]NMS binding in the presence of 0.5 mM GTP; in this way, the low affinity binding of agonists was measured.The computed pKi and nH values are summarized in Table 2. |
|
| Publications: |
1 |
Organism: |
Cricetulus Griseus |
| + |
CHRM4 | up-regulates activity
binding
|
GNA15 |
0.301 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-282359 |
|
|
Homo sapiens |
HEK-293A Cell |
| pmid |
sentence |
| 37742189 |
Here, we quantitatively measure the enzymatic activity of GPCRs in living cells and reveal the G protein selectivity of 124 GPCRs with the exact rank order of their G protein preference. Using this information, we establish a classification of GPCRs by functional selectivity, discover the existence of a G12/13-coupled receptor, G15-coupled receptors, and a variety of subclasses for Gi/o-, Gq-, and Gs-coupled receptors, culminating in development of the predictive algorithm of G protein selectivity. |
|
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-282093 |
|
|
Homo sapiens |
HEK-293A Cell |
| pmid |
sentence |
| 35302493 |
This study describes the development and validation of a genetically encoded ebBRET-based biosensor platform allowing live-cell mapping of GPCR-G protein coupling preferences covering 12 heterotrimeric G proteins. Profiling of 100 therapeutically relevant human GPCRs resulted in 1500 pathway-specific concentration-response curves and revealed a great diversity of coupling profiles ranging from exquisite selectivity to broad promiscuity.In our dataset, which is the first using unmodified GPCRs and Gα proteins (except for Gs), 29% of the receptors coupled to only one family, whereas others displayed more promiscuity by coupling to 2, 3, or 4 families (36%, 25%, and 10%, respectively). |
|
| Publications: |
2 |
Organism: |
Homo Sapiens |
| + |
dothiepin | down-regulates activity
chemical inhibition
|
CHRM4 |
0.8 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-258698 |
|
|
Cricetulus griseus |
CHO Cell |
| pmid |
sentence |
| 8100134 |
Antagonism of the five cloned human muscarinic cholinergic receptors expressed in CHO-K1 cells by antidepressants and antihistaminics. Competition between [‘H]QNB and the antidepressant compounds (Table 1) showed that at the ml subtype the most potent drugs were amitriptyline > dothiepin > doxepin = nortriptyline; at the m2 receptor, amitriptyline > imipramine > nortriptyline = dothiepin; at the m3 recep- tor, amitriptyline > dothiepin > nortriptyline; at the m4 receptor, amitriptyline > dothiepin > doxepin = nortrip- tyline; and at the m5 receptor, amitriptyline > doxepin > imipramine. |
|
| Publications: |
1 |
Organism: |
Cricetulus Griseus |
| + |
CHRM4 | up-regulates activity
binding
|
GNAI2 |
0.401 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-281642 |
|
|
Homo sapiens |
HEK-293A Cell |
| pmid |
sentence |
| 35302493 |
This study describes the development and validation of a genetically encoded ebBRET-based biosensor platform allowing live-cell mapping of GPCR-G protein coupling preferences covering 12 heterotrimeric G proteins. Profiling of 100 therapeutically relevant human GPCRs resulted in 1500 pathway-specific concentration-response curves and revealed a great diversity of coupling profiles ranging from exquisite selectivity to broad promiscuity.In our dataset, which is the first using unmodified GPCRs and Gα proteins (except for Gs), 29% of the receptors coupled to only one family, whereas others displayed more promiscuity by coupling to 2, 3, or 4 families (36%, 25%, and 10%, respectively). |
|
| Publications: |
1 |
Organism: |
Homo Sapiens |
| + |
CHRM4 | up-regulates activity
binding
|
GNAZ |
0.2 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-281643 |
|
|
Homo sapiens |
HEK-293A Cell |
| pmid |
sentence |
| 35302493 |
This study describes the development and validation of a genetically encoded ebBRET-based biosensor platform allowing live-cell mapping of GPCR-G protein coupling preferences covering 12 heterotrimeric G proteins. Profiling of 100 therapeutically relevant human GPCRs resulted in 1500 pathway-specific concentration-response curves and revealed a great diversity of coupling profiles ranging from exquisite selectivity to broad promiscuity.In our dataset, which is the first using unmodified GPCRs and Gα proteins (except for Gs), 29% of the receptors coupled to only one family, whereas others displayed more promiscuity by coupling to 2, 3, or 4 families (36%, 25%, and 10%, respectively). |
|
| Publications: |
1 |
Organism: |
Homo Sapiens |
| + |
CHRM4 | up-regulates activity
binding
|
GNA14 |
0.2 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-281644 |
|
|
Homo sapiens |
HEK-293A Cell |
| pmid |
sentence |
| 35302493 |
This study describes the development and validation of a genetically encoded ebBRET-based biosensor platform allowing live-cell mapping of GPCR-G protein coupling preferences covering 12 heterotrimeric G proteins. Profiling of 100 therapeutically relevant human GPCRs resulted in 1500 pathway-specific concentration-response curves and revealed a great diversity of coupling profiles ranging from exquisite selectivity to broad promiscuity.In our dataset, which is the first using unmodified GPCRs and Gα proteins (except for Gs), 29% of the receptors coupled to only one family, whereas others displayed more promiscuity by coupling to 2, 3, or 4 families (36%, 25%, and 10%, respectively). |
|
| Publications: |
1 |
Organism: |
Homo Sapiens |
| + |
CHRM4 | up-regulates activity
binding
|
GNAQ |
0.2 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-282036 |
|
|
Homo sapiens |
HEK-293A Cell |
| pmid |
sentence |
| 35302493 |
This study describes the development and validation of a genetically encoded ebBRET-based biosensor platform allowing live-cell mapping of GPCR-G protein coupling preferences covering 12 heterotrimeric G proteins. Profiling of 100 therapeutically relevant human GPCRs resulted in 1500 pathway-specific concentration-response curves and revealed a great diversity of coupling profiles ranging from exquisite selectivity to broad promiscuity.In our dataset, which is the first using unmodified GPCRs and Gα proteins (except for Gs), 29% of the receptors coupled to only one family, whereas others displayed more promiscuity by coupling to 2, 3, or 4 families (36%, 25%, and 10%, respectively). |
|
| Publications: |
1 |
Organism: |
Homo Sapiens |
| + |
1-methyl-3,6-dihydro-2H-pyridine-5-carboxylic acid prop-2-ynyl ester | up-regulates activity
chemical activation
|
CHRM4 |
0.8 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-258634 |
|
|
Cricetulus griseus |
CHO Cell |
| pmid |
sentence |
| 9224827 |
We investigated whether the allosteric modulators can also increase the affinity of receptors for their agonists. Twelve agonists and five allosteric modulators were tested in experiments on membranes of CHO cells that had been stably transfected with genes for the M1-M4 receptor subtypes. Affinities of agonists for the M1–M4 receptor subtypes were determined according to the ability of the agonist to inhibit [3H]NMS binding in the presence of 0.5 mM GTP; in this way, the low affinity binding of agonists was measured.The computed pKi and nH values are summarized in Table 2. |
|
| Publications: |
1 |
Organism: |
Cricetulus Griseus |
| + |
Hexocyclium | down-regulates activity
chemical inhibition
|
CHRM4 |
0.8 |
| Identifier |
Residue |
Sequence |
Organism |
Cell Line |
| SIGNOR-258398 |
|
|
Cricetulus griseus |
CHO Cell |
| pmid |
sentence |
| 2704370 |
In order to investigate the pharmacological properties of the individual muscarinic receptors, we have transfected each of these genes into Chinese hamster ovary cells (CHO-K1) and have established stable cell lines expressing each receptor. In the present study we have examined the antagonist binding properties of each muscarinic receptor. Antagonists were chosen that had previously been proposed to be selective for muscarinic receptor subtypes and included pirenzepine, AF-DX 116, methoctramine, dicyclomine, hexohydrodifenidol, hexahydrosiladifenidol, hexocyclium, and silahexocyclium. |
|
| Publications: |
1 |
Organism: |
Cricetulus Griseus |
4.0
CHRM4
- 
- 