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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.
Download a TSV version of all interaction data.
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GPCR

Name	Muscarinic acetylcholine receptor M4
Species	Rattus norvegicus (Rat)
Gene	Chrm4
Synonym	cholinergic receptor cholinergic receptor, muscarinic 4 Chrm-4 HM3 M4 receptor
Disease	N/A for non-human GPCRs
Length	478
Amino acid sequence	MXNFTPVNGSSANQSVRLVTAAHNHLETVEMVFIATVTGSLSLVTVVGNILVMLSIKVNRQLQTVNNYFLFSLGCADLIIGAFSMNLYTLYIIKGYWPLGAVVCDLWLALDYVVSNASVMNLLIISFDRYFCVTKPLTYPARRTTKMAGLMIAAAWVLSFVLWAPAILFWQFVVGKRTVPDNQCFIQFLSNPAVTFGTAIAAFYLPVVIMTVLYIHISLASRSRVHKHRPEGPKEKKAKTLAFLKSPLMKPSIKKPPPGGASREELRNGKLEEAPPPALPPPPRPVPDKDTSNESSSGSATQNTKERPPTELSTAEATTPALPAPTLQPRTLNPASKWSKIQIVTKQTGNECVTAIEIVPATPAGMRPAANVARKFASIARNQVRKKRQMAARERKVTRTIFAILLAFILTWTPYNVMVLVNTFCQSCIPERVWSIGYWLCYVNSTINPACYALCNATFKKTFRHLLLCQYRNIGTAR
UniProt	P08485
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	CHEMBL317
IUPHAR	16
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
459244	VU0152123	C20H23N3O3S	385.482	6 / 2	4.6	Yes
459257	CHEMBL1202000	C64H77N13O6	1124.41	13 / 4	7.7	No
459260	VU0402472-1	C17H16ClN3OS	345.845	4 / 2	4.6	Yes
6615	carbachol	C6H15ClN2O2	182.648	3 / 1	N/A	N/A
18367	VU0152099	C18H17N3O3S	355.412	6 / 2	3.8	Yes
18946	CHEMBL1202133	C19H28F6N4O6	522.445	14 / 4	N/A	No
19116	CHEMBL1202047	C18H29N3O7	399.444	8 / 3	N/A	N/A
20538	AQ-RA 741	C27H37N5O2	463.626	5 / 1	3.1	Yes
536500	CHEMBL3974708	C17H18N4O3S2	390.476	7 / 2	2.2	Yes
21406	CHEMBL68240	C12H15NO2	205.257	3 / 1	1.2	Yes
22823	CHEMBL68771	C20H24N6O2	380.452	6 / 2	-0.8	Yes
459412	tropicamide	C17H20N2O2	284.359	3 / 1	1.5	Yes
27436	CHEMBL305403	C28H31N7O3	513.602	7 / 3	-0.1	No
30958	CHEMBL303678	C20H21N5O3	379.42	5 / 1	-0.4	Yes
33723	CHEMBL304112	C30H30N6O4	538.608	7 / 1	1.5	No
36720	CHEMBL1202058	C18H21ClN2O5	380.825	6 / 2	N/A	N/A
37695	CHEMBL1916225	C21H30FN3O3	391.487	5 / 1	3.1	Yes
37953	CHEMBL68709	C25H23N5O3	441.491	5 / 1	1.2	Yes
522660	CHEMBL1357034	C20H23N5O3S2	445.556	8 / 2	2.7	Yes
459584	VU0402471-1	C17H16FN3OS	329.393	5 / 2	4.0	Yes
459586	VU0359455	C21H24N4O3S	412.508	7 / 2	3.6	Yes
459597	VU0152121	C24H30N4O3S	454.589	7 / 2	4.6	Yes
44166	VU 0238429	C17H12F3NO4	351.281	7 / 0	3.5	Yes
45149	CHEMBL445106	C12H14BrNO2	284.153	3 / 1	1.9	Yes
45941	CHEMBL1916228	C21H31N3O4	389.496	5 / 1	2.6	Yes
459646	VU0402479-1	C17H16BrN3OS	390.299	4 / 2	4.6	Yes
459674	CHEMBL1202002	C78H86N16O8	1375.65	16 / 4	9.0	No
459678	VU0359480	C22H18F2N4O2S	440.469	8 / 2	4.5	Yes
51901	CHEMBL112244	C36H59N7O2	621.915	7 / 3	4.3	No
52290	TBPB	C25H32N4O	404.558	3 / 1	4.4	Yes
537357	CHEMBL3966208	C19H22N4O3S2	418.53	7 / 2	3.0	Yes
57553	CHEMBL1202001	C58H76N10O20	1233.3	26 / 12	N/A	No
57880	1-(4-Bromobenzyl)indole-2,3-dione	C15H10BrNO2	316.154	2 / 0	2.8	Yes
459759	CHEMBL1202003	C67H80N10O6	1121.44	10 / 4	9.9	No
59353	CHEMBL1202002	C86H94N16O24	1735.79	32 / 12	N/A	No
459778	4-(2-Aminoethyl)-2-methoxyphenol	C9H13NO2	167.208	3 / 2	0.2	Yes
459817	VU0402481-1	C17H15F2N3OS	347.384	6 / 2	4.1	Yes
444856	CHEMBL3329755	C23H25F3N4O3S	494.533	8 / 1	3.4	Yes
459962	Himbacine	C22H35NO2	345.527	3 / 0	5.0	Yes
82153	Himbacine	C22H35NO2	345.527	3 / 0	5.0	Yes
84305	633283-39-3	C17H16ClN3OS	345.845	4 / 2	4.6	Yes
548904	CHEMBL3923597	C19H25N5O3S	403.501	8 / 2	1.9	Yes
548925	CHEMBL3921095	C15H21N5O3S	351.425	8 / 1	2.1	Yes
91128	CHEMBL1084941	C19H15N3O2	317.348	3 / 0	2.3	Yes
97341	CHEMBL1202043	C16H25N3O6	355.391	7 / 3	N/A	N/A
99126	VU0359460	C19H28N4O3S	392.518	7 / 2	3.0	Yes
99151	CHEMBL1202052	C24H41N3O7	483.606	8 / 3	N/A	N/A
460117	VU0402473-1	C17H16ClN3OS	345.845	4 / 2	4.6	Yes
460146	VU0152119	C23H28N4O4S	456.561	8 / 2	3.5	Yes
460147	VU0402483-1	C17H15F2N3OS	347.384	6 / 2	4.1	Yes
103512	CHEMBL2315680	C20H27F3N4O3	428.456	8 / 1	2.5	Yes
107434	ml375	C23H15ClF2N2O2	424.832	4 / 0	4.3	Yes
112441	CHEMBL1202057	C18H22N2O5	346.383	6 / 2	N/A	N/A
115348	CHEMBL64000	C9H15NO2	169.224	3 / 1	0.9	Yes
116436	arecoline	C8H13NO2	155.197	3 / 0	0.3	Yes
460280	CHEMBL1202004	C52H70N8O4	871.184	8 / 4	7.9	No
460297	VU0402477-1	C18H19N3OS	325.43	4 / 2	4.3	Yes
549354	CHEMBL3963436	C14H20N4OS	292.401	6 / 1	1.6	Yes
122439	CHEMBL1202040	C16H24N2O7	356.375	8 / 2	N/A	N/A
124120	CHEMBL134692	C39H61N7O4	691.962	7 / 3	3.0	No
125944	Oxotremorine 1	C11H18N2O	194.278	2 / 0	0.3	Yes
126436	CHEMBL1202051	C21H35N3O6	425.526	7 / 3	N/A	N/A
127081	CHEMBL420739	C25H24N6O2S	472.567	5 / 2	1.5	Yes
127097	4-Diphenylacetoxy-1,1-dimethylpiperidinium	C21H26NO2+	324.444	2 / 0	4.0	Yes
132155	CHEMBL1202039	C17H28N4O6	384.433	8 / 4	N/A	N/A
133381	CHEMBL404874	C18H28ClN3O	337.892	3 / 1	3.7	Yes
134883	CHEMBL1916229	C20H27F2N3O3	395.451	6 / 1	2.8	Yes
135535	CHEMBL271704	C22H26ClN3O	383.92	3 / 1	3.9	Yes
136725	CHEMBL270580	C23H30ClN3O2	415.962	4 / 1	4.9	Yes
460519	VU0402476-1	C16H16N4OS	312.391	5 / 2	2.9	Yes
143614	CHEMBL255523	C20H30ClN3O	363.93	3 / 1	4.5	Yes
549775	CHEMBL3927243	C24H27Cl2N3O2S	492.459	5 / 2	5.3	No
153067	CHEMBL1916230	C21H31N3O3	373.497	4 / 1	3.0	Yes
539985	CHEMBL3942363	C17H15F3N4O3S2	444.447	10 / 2	3.2	Yes
460630	VU0152117	C22H28N4O3S	428.551	7 / 2	4.2	Yes
159780	JTTPGMRULUVVEK-UHFFFAOYSA-N	C13H20N2O3	252.314	4 / 1	-2.5	Yes
460765	VU0152122	C20H23N3O3S	385.482	6 / 2	4.7	Yes
540455	CHEMBL3963788	C17H16F2N4O3S2	426.457	9 / 2	3.1	Yes
175878	CHEMBL1202131	C20H31F6N3O5	507.474	13 / 3	N/A	No
178616	CHEMBL1202054	C24H40N4O8	512.604	9 / 4	N/A	No
460859	VU0402475-1	C16H16N4OS	312.391	5 / 2	2.9	Yes
540761	CHEMBL3896591	C17H17FN4O3S2	408.466	8 / 2	2.3	Yes
550238	CHEMBL3964368	C16H23N5O3S	365.452	8 / 1	2.4	Yes
550257	CHEMBL3937756	C25H31N3O2S	437.602	5 / 2	6.0	No
460912	haloperidol	C21H23ClFNO2	375.868	4 / 1	3.2	Yes
194895	CHEMBL1202049	C22H29N3O6	431.489	7 / 3	N/A	N/A
195466	CHEMBL2381694	C17H12F3NO4	351.281	7 / 0	3.7	Yes
196396	CHEMBL1202134	C21H33F6N3O5	521.501	13 / 3	N/A	No
196757	CHEMBL1202004	C60H78N8O20	1231.32	24 / 12	N/A	No
201849	VU10007	C18H19N3OS	325.43	4 / 2	4.3	Yes
202858	VU0152100	C18H19N3O2S	341.429	5 / 2	3.9	Yes
205997	CHEMBL503735	C16H9ClF3NO2	339.698	5 / 0	3.9	Yes
461030	VU0402480-1	C18H16F3N3O2S	395.4	8 / 2	5.1	No
209339	CHEMBL127587	C18H22INO3	427.282	4 / 1	3.2	Yes
541506	CHEMBL3926121	C12H20N6OS	296.393	7 / 3	1.1	Yes
550534	CHEMBL3961411	C21H25N5O3S	427.523	8 / 1	3.7	Yes
219022	CHEMBL2112217	C17H18N6O2	338.371	6 / 2	-0.3	Yes
222335	CHEMBL1202037	C23H38N4O8	498.577	9 / 4	N/A	N/A
541813	CHEMBL3894866	C17H18N4O3S2	390.476	7 / 2	2.2	Yes
224015	CHEMBL1202000	C72H85N13O22	1484.54	29 / 12	N/A	No

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