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4MQS

Structure of active human M2 muscarinic acetylcholine receptor bound to the agonist iperoxo

Functional Information from GO Data
ChainGOidnamespacecontents
A0004930molecular_functionG protein-coupled receptor activity
A0005886cellular_componentplasma membrane
A0007186biological_processG protein-coupled receptor signaling pathway
A0016020cellular_componentmembrane
A0016907molecular_functionG protein-coupled acetylcholine receptor activity
Functional Information from PDB Data
site_idAC1
Number of Residues12
DetailsBINDING SITE FOR RESIDUE IXO A 501
ChainResidue
AASP103
ATYR426
ACYS429
ATYR430
ATYR104
ASER107
AVAL111
ATRP155
AALA194
ATRP400
ATYR403
AASN404

Functional Information from PROSITE/UniProt
site_idPS00237
Number of Residues17
DetailsG_PROTEIN_RECEP_F1_1 G-protein coupled receptors family 1 signature. ASVmNLLIISFDRYFcV
ChainResidueDetails
AALA109-VAL125

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues65
DetailsTOPO_DOM: Extracellular
ChainResidueDetails
AMET-1-THR20
ATHR81-ASP97
AGLN163-ALA184
ATHR411-PRO418

site_idSWS_FT_FI2
Number of Residues22
DetailsTRANSMEM: Helical; Name=1
ChainResidueDetails
AVAL23-MET45

site_idSWS_FT_FI3
Number of Residues232
DetailsTOPO_DOM: Cytoplasmic
ChainResidueDetails
AVAL46-ASN59
AASP120-MET139
ACYS443-ARG466

site_idSWS_FT_FI4
Number of Residues20
DetailsTRANSMEM: Helical; Name=2
ChainResidueDetails
ATYR60-TYR80

site_idSWS_FT_FI5
Number of Residues21
DetailsTRANSMEM: Helical; Name=3
ChainResidueDetails
ALEU98-PHE119

site_idSWS_FT_FI6
Number of Residues22
DetailsTRANSMEM: Helical; Name=4
ChainResidueDetails
AALA140-TRP162

site_idSWS_FT_FI7
Number of Residues24
DetailsTRANSMEM: Helical; Name=5
ChainResidueDetails
AALA185-ILE209

site_idSWS_FT_FI8
Number of Residues22
DetailsTRANSMEM: Helical; Name=6
ChainResidueDetails
ATHR388-ASN410

site_idSWS_FT_FI9
Number of Residues23
DetailsTRANSMEM: Helical; Name=7
ChainResidueDetails
AASN419-LEU442

site_idSWS_FT_FI10
Number of Residues1
DetailsMOD_RES: Phosphoserine => ECO:0000250|UniProtKB:Q9ERZ4
ChainResidueDetails
ASER232

site_idSWS_FT_FI11
Number of Residues3
DetailsMOD_RES: Phosphothreonine => ECO:0000255
ChainResidueDetails
ATHR446
ATHR450
ATHR465

site_idSWS_FT_FI12
Number of Residues4
DetailsCARBOHYD: N-linked (GlcNAc...) asparagine => ECO:0000255
ChainResidueDetails
AASP0
AASP1
AASP4
AASP7

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PDB entries from 2025-06-18

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