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You can:

Check the GPCR table for details.
Go to the ligand list to see ligands that interacts with this GPCR.
Go to the individual ligand page for PubMed ID information by text mining.
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GPCR

Name	Muscarinic acetylcholine receptor M1
Species	Mus musculus (Mouse)
Gene	Chrm1
Synonym	cholinergic receptor, muscarinic 1 cholinergic receptor, muscarinic 1, CNS cholinergic receptor M1 muscarinic acetylcholine receptor M1 receptor M1R Chrm-1 [ Show all ]
Disease	N/A for non-human GPCRs
Length	460
Amino acid sequence	MNTSVPPAVSPNITVLAPGKGPWQVAFIGITTGLLSLATVTGNLLVLISFKVNTELKTVNNYFLLSLACADLIIGTFSMNLYTTYLLMGHWALGTLACDLWLALDYVASNASVMNLLLISFDRYFSVTRPLSYRAKRTPRRAALMIGLAWLVSFVLWAPAILFWQYLVGERTVLAGQCYIQFLSQPIITFGTAMAAFYLPVTVMCTLYWRIYRETENRARELAALQGSETPGKGGGSSSSSERSQPGAEGSPESPPGRCCRCCRAPRLLQAYSWKEEEEEDEGSMESLTSSEGEEPGSEVVIKMPMVDPEAQAPTKQPPKSSPNTVKRPTKKGRDRGGKGQKPRGKEQLAKRKTFSLVKEKKAARTLSAILLAFILTWTPYNIMVLVSTFCKDCVPETLWELGYWLCYVNSTVNPMCYALCNKAFRDTFRLLLLCRWDKRRWRKIPKRPGSVHRTPSRQC
UniProt	P12657
Protein Data Bank	N/A
GPCR-HGmod model	N/A
3D structure model	No available structures or models
BioLiP	N/A
Therapeutic Target Database	N/A
ChEMBL	CHEMBL3733
IUPHAR	13
DrugBank	N/A

Known ligands

You can:

Click GLASS IDs to check the association information.
Click ligand names to check details of the ligands.
Download a TSV version of all interaction information.
Download a SDF structure collection of all known ligands.

GLASS ID	Molecule	Formula	Molecular weight	H-bond acceptor / donor	XlogP	Lipinski's druglikeness
6611	carbachol	C6H15ClN2O2	182.648	3 / 1	N/A	N/A
12723	N,N'-Bis[2-[[5-(dimethylaminomethyl)-2-furanyl]methylthio]ethyl]-1-nitroethene-1,2-diamine	C22H35N5O4S2	497.673	10 / 2	2.7	Yes
13061	158142-45-1	C6H10N2O2	142.158	3 / 1	-0.9	Yes
21407	CHEMBL68240	C12H15NO2	205.257	3 / 1	1.2	Yes
22750	BRN 5352858	C18H28N2O2S2	368.554	6 / 0	2.5	Yes
25724	114724-56-0	C9H13N3O	179.223	4 / 0	0.8	Yes
25866	BRN 5360513	C24H32N2O2S2	444.652	6 / 0	3.8	Yes
37030	CHEMBL538467	C6H11ClN2O2	178.616	3 / 2	N/A	N/A
37360	Oxotremorine M	C11H19N2O+	195.286	1 / 0	-0.1	Yes
42823	BRN 5358078	C24H40N2O2S2	452.716	6 / 0	5.0	Yes
45146	CHEMBL445106	C12H14BrNO2	284.153	3 / 1	1.9	Yes
52257	CHEMBL1183133	C8H12N4OS	212.271	5 / 1	-0.3	Yes
56726	BRN 5356180	C21H34N2O2S2	410.635	6 / 0	3.5	Yes
59702	UNII-KU4UTQ0410	C10H13F3N4O3	294.234	9 / 2	N/A	N/A
67467	CHEMBL538224	C6H12ClN3O2	193.631	3 / 3	N/A	N/A
78050	CHEMBL542561	C8H12ClN3O2	217.653	3 / 3	N/A	N/A
78931	CHEMBL542561	C8H11N3O2	181.195	3 / 2	-1.4	Yes
84881	CHEMBL542559	C9H13ClN2O2	216.665	3 / 2	N/A	N/A
89524	BRN 5838245	C19H26N6O5S	450.514	10 / 2	4.0	Yes
105891	BRN 5836339	C17H23N5O5S	409.461	9 / 2	3.8	Yes
107037	BRN 5834442	C16H20N4O5S	380.419	8 / 1	3.2	Yes
107709	BRN 5840026	C22H25N5O5S	471.532	9 / 2	5.3	No
109795	BRN 5836042	C16H21N5O5S	395.434	9 / 2	3.1	Yes
116433	arecoline	C8H13NO2	155.197	3 / 0	0.3	Yes
129231	BRN 5841166	C22H26N6O5S	486.547	10 / 2	4.2	Yes
136086	Abt-418	C9H14N2O	166.224	3 / 0	1.2	Yes
138647	UNII-9F064NJ81D	C8H12N4O	180.211	4 / 1	0.1	Yes
148681	BDBM50005504	C22H35N5O4S2	497.673	10 / 1	1.9	Yes
156003	XANOMELINE	C14H23N3OS	281.418	5 / 0	3.3	Yes
156081	BRN 5837330	C19H27N5O5S	437.515	9 / 2	4.7	Yes
161889	5-propargyloxycarbonyl-1,4,5,6-tetrahydropyrimidine hydrochloride	C8H11ClN2O2	202.638	3 / 2	N/A	N/A
166891	ZINC1535055	C8H10N2O2	166.18	3 / 1	-0.8	Yes
182470	142744-14-7	C16H19FN4O5S	398.409	9 / 1	3.3	Yes
186256	BRN 5838753	C20H30N6O5S	466.557	10 / 2	3.8	Yes
193480	BRN 5365697	C22H34N6O2S2	478.674	8 / 2	1.8	Yes
208975	CID 44457650	C10H13F3N4O4	310.233	10 / 2	N/A	N/A
212504	CHEMBL543030	C11H15ClN2O2	242.703	3 / 2	N/A	N/A
215065	BRN 5841483	C23H24N6O5S	496.542	10 / 2	5.0	Yes
217466	BRN 5359326	C25H42N2O2S2	466.743	6 / 0	5.5	No
220974	158930-48-4	C7H12N2O2	156.185	3 / 1	-1.0	Yes
221739	BRN 5829247	C16H20FN3O3S	353.412	7 / 1	3.5	Yes
226939	BRN 5841153	C22H26N6O5S	486.547	10 / 2	4.2	Yes
228662	BRN 5357514	C23H38N2O2S2	438.689	6 / 0	4.4	Yes
230362	CHEMBL66241	C14H19NO2	233.311	3 / 0	2.2	Yes
231115	CHEMBL1178328	C11H14N4O	218.26	4 / 1	1.0	Yes
238136	CHEMBL542064	C9H12N2O2	180.207	3 / 1	-0.3	Yes
251624	BRN 5369860	C26H36N6O6S2	592.73	12 / 2	4.9	No
255828	CHEMBL543030	C11H14N2O2	206.245	3 / 1	0.5	Yes
257931	methyl 6-amino-2,3,4,5-tetrahydropyridine-3-carboxylate hydrochloride	C7H13ClN2O2	192.643	3 / 2	N/A	N/A
260545	physostigmine	C15H21N3O2	275.352	4 / 1	0.7	Yes
261025	BRN 5837136	C16H22N6O5S	410.449	10 / 3	3.0	Yes
274816	pilocarpine	C11H16N2O2	208.261	3 / 0	1.1	Yes
275883	CHEMBL542064	C9H13ClN2O2	216.665	3 / 2	N/A	N/A
280882	CID 44457579	C10H13F3N4O3S	326.294	10 / 2	N/A	N/A
281282	BRN 5354948	C20H32N2O2S2	396.608	6 / 0	3.2	Yes
297931	CHEMBL1800285	C22H20N4O3	388.427	6 / 1	-0.6	Yes
303755	Oxotremorine	C12H18N2O	206.289	2 / 0	0.4	Yes
306444	BRN 5363156	C30H36N2O2S2	520.75	6 / 0	5.4	No
310392	SCHEMBL8305377	C7H10N4O	166.184	4 / 1	-0.4	Yes
314434	CHEMBL541398	C7H13ClN2O2	192.643	3 / 2	N/A	N/A
339608	CHEMBL557795	C9H13ClN2O2	216.665	3 / 2	N/A	N/A
344129	ZINC3786169	C7H12N2O2	156.185	3 / 1	-0.5	Yes
359639	SCHEMBL8307259	C9H11F3N4O3	280.207	9 / 2	N/A	N/A
360944	Carbamylcholine	C6H15N2O2+	147.198	2 / 1	-0.4	Yes
364308	CHEMBL542559	C9H12N2O2	180.207	3 / 1	-0.3	Yes
365357	Oxotremorine M	C11H19IN2O	322.19	2 / 0	N/A	N/A
394017	A-85380	C9H12N2O	164.208	3 / 1	0.6	Yes
394307	CHEMBL557795	C9H12N2O2	180.207	3 / 1	-0.9	Yes
406504	BRN 5841077	C23H34N6O6S	522.621	11 / 2	3.8	No
410212	CID 44457666	C13H15F3N4O3	332.283	9 / 2	N/A	N/A
412997	Tacrine	C13H14N2	198.269	2 / 1	2.7	Yes
417880	CHEMBL321808	C14H19N5O3S	337.398	8 / 1	1.7	Yes
421336	BRN 5840630	C22H24FN5O5S	489.522	10 / 2	5.4	No
431430	CHEMBL538224	C6H11N3O2	157.173	3 / 2	-1.5	Yes
435496	BRN 5356615	C22H36N2O2S2	424.662	6 / 0	3.9	Yes
440182	BRN 5840829	C23H27N5O5S	485.559	9 / 2	5.3	No
440555	BRN 5353847	C19H30N2O2S2	382.581	6 / 0	2.8	Yes