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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 Residues22
DetailsTransmembrane: {"description":"Helical; Name=1"}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues32
DetailsTopological domain: {"description":"Cytoplasmic"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues20
DetailsTransmembrane: {"description":"Helical; Name=2"}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues44
DetailsTopological domain: {"description":"Extracellular"}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues21
DetailsTransmembrane: {"description":"Helical; Name=3"}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues22
DetailsTransmembrane: {"description":"Helical; Name=4"}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues24
DetailsTransmembrane: {"description":"Helical; Name=5"}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues22
DetailsTransmembrane: {"description":"Helical; Name=6"}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues23
DetailsTransmembrane: {"description":"Helical; Name=7"}
ChainResidueDetails

site_idSWS_FT_FI10
Number of Residues6
DetailsMotif: {"description":"Important for signaling"}
ChainResidueDetails

site_idSWS_FT_FI11
Number of Residues2
DetailsModified residue: {"description":"Phosphothreonine","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

246704

PDB entries from 2025-12-24

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