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3RZE

Structure of the human histamine H1 receptor in complex with doxepin

Functional Information from GO Data
ChainGOidnamespacecontents
A0003796molecular_functionlysozyme activity
A0004930molecular_functionG protein-coupled receptor activity
A0007186biological_processG protein-coupled receptor signaling pathway
A0009253biological_processpeptidoglycan catabolic process
A0016020cellular_componentmembrane
A0016998biological_processcell wall macromolecule catabolic process
Functional Information from PDB Data
site_idAC1
Number of Residues9
DetailsBINDING SITE FOR RESIDUE 5EH A 1200
ChainResidue
AASP107
ATYR108
ASER111
ATHR112
ATRP158
ATRP428
ATYR431
APHE432
ATYR458

site_idAC2
Number of Residues12
DetailsBINDING SITE FOR RESIDUE D7V A 1201
ChainResidue
AASP107
ATYR108
ASER111
ATHR112
AILE115
ATRP158
AASN198
ATRP428
ATYR431
APHE432
APHE435
ATYR458

site_idAC3
Number of Residues6
DetailsBINDING SITE FOR RESIDUE PO4 A 1202
ChainResidue
AASP178
ALYS179
ALYS191
ATYR431
APHE435
AHIS450

site_idAC4
Number of Residues2
DetailsBINDING SITE FOR RESIDUE PO4 A 1203
ChainResidue
AARG1076
AARG1080

site_idAC5
Number of Residues4
DetailsBINDING SITE FOR RESIDUE PO4 A 1204
ChainResidue
ATHR1142
APRO1143
AASN1144
AARG1145

site_idAC6
Number of Residues4
DetailsBINDING SITE FOR RESIDUE OLC A 1205
ChainResidue
AGLU1011
AARG1014
AASN1053
AASN1055

Functional Information from PROSITE/UniProt
site_idPS00237
Number of Residues17
DetailsG_PROTEIN_RECEP_F1_1 G-protein coupled receptors family 1 signature. ASIfSVFILCIDRYRsV
ChainResidueDetails
AALA113-VAL129

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues1
DetailsActive site: {"description":"Proton donor/acceptor","evidences":[{"source":"HAMAP-Rule","id":"MF_04110","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"3382407","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"7831309","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"8266098","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues1
DetailsActive site: {"description":"Proton donor/acceptor","evidences":[{"source":"HAMAP-Rule","id":"MF_04110","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"1892846","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"3382407","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"7831309","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"8266098","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues2
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"8266098","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues2
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"7831309","evidenceCode":"ECO:0000303"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues20
DetailsTransmembrane: {"description":"Helical; Name=1","evidences":[{"source":"PubMed","id":"33828102","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"7DFL","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues33
DetailsTopological domain: {"description":"Cytoplasmic","evidences":[{"source":"PubMed","id":"21697825","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues24
DetailsTransmembrane: {"description":"Helical; Name=2","evidences":[{"source":"PubMed","id":"33828102","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"7DFL","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues12
DetailsTopological domain: {"description":"Extracellular","evidences":[{"source":"PubMed","id":"21697825","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues25
DetailsTransmembrane: {"description":"Helical; Name=3","evidences":[{"source":"PubMed","id":"33828102","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"7DFL","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI10
Number of Residues19
DetailsTransmembrane: {"description":"Helical; Name=4","evidences":[{"source":"PubMed","id":"33828102","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"7DFL","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI11
Number of Residues22
DetailsTransmembrane: {"description":"Helical; Name=5","evidences":[{"source":"PubMed","id":"33828102","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"7DFL","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI12
Number of Residues23
DetailsTransmembrane: {"description":"Helical; Name=6","evidences":[{"source":"PubMed","id":"33828102","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"7DFL","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI13
Number of Residues22
DetailsTransmembrane: {"description":"Helical; Name=7","evidences":[{"source":"PubMed","id":"33828102","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"7DFL","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI14
Number of Residues9
DetailsRegion: {"description":"Important for agonist binding","evidences":[{"source":"PubMed","id":"21697825","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI15
Number of Residues34
DetailsRegion: {"description":"Disordered","evidences":[{"source":"SAM","id":"MobiDB-lite","evidenceCode":"ECO:0000256"}]}
ChainResidueDetails

site_idSWS_FT_FI16
Number of Residues16
DetailsCompositional bias: {"description":"Polar residues","evidences":[{"source":"SAM","id":"MobiDB-lite","evidenceCode":"ECO:0000256"}]}
ChainResidueDetails

site_idSWS_FT_FI17
Number of Residues2
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"33828102","evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI18
Number of Residues2
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"33828102","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"7DFL","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI19
Number of Residues2
DetailsModified residue: {"description":"Phosphothreonine","evidences":[{"source":"PubMed","id":"15328002","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI20
Number of Residues1
DetailsModified residue: {"description":"Phosphothreonine","evidences":[{"source":"PubMed","id":"18669648","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI21
Number of Residues3
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"UniProtKB","id":"P70174","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI22
Number of Residues2
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"15328002","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idMCSA1
Number of Residues2
DetailsM-CSA 921
ChainResidueDetails
AGLU1011proton shuttle (general acid/base)
AASP1020covalent catalysis

250835

PDB entries from 2026-03-18

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