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6I6H

Crystal structure of the KDEL receptor in the peptide bound state

Functional Information from GO Data
ChainGOidnamespacecontents
A0000139cellular_componentGolgi membrane
A0005046molecular_functionKDEL sequence binding
A0005783cellular_componentendoplasmic reticulum
A0005789cellular_componentendoplasmic reticulum membrane
A0005794cellular_componentGolgi apparatus
A0005801cellular_componentcis-Golgi network
A0006621biological_processprotein retention in ER lumen
A0006890biological_processretrograde vesicle-mediated transport, Golgi to endoplasmic reticulum
A0015031biological_processprotein transport
A0016020cellular_componentmembrane
A0016192biological_processvesicle-mediated transport
A0030663cellular_componentCOPI-coated vesicle membrane
A0031410cellular_componentcytoplasmic vesicle
A0035437biological_processmaintenance of protein localization in endoplasmic reticulum
A0046923molecular_functionER retention sequence binding
Functional Information from PDB Data
site_idAC1
Number of Residues1
Detailsbinding site for residue OLC A 401
ChainResidue
AOLC403

site_idAC2
Number of Residues4
Detailsbinding site for residue OLC A 402
ChainResidue
APHE153
APHE195
AOLC403
AOLC411

site_idAC3
Number of Residues7
Detailsbinding site for residue OLC A 403
ChainResidue
ATYR198
AOLC401
AOLC402
ATHR7
AALA14
APHE153
APHE154

site_idAC4
Number of Residues1
Detailsbinding site for residue OLC A 404
ChainResidue
AMET1

site_idAC5
Number of Residues1
Detailsbinding site for residue OLC A 405
ChainResidue
ATYR196

site_idAC6
Number of Residues3
Detailsbinding site for residue OLC A 406
ChainResidue
AILE56
ASER57
ATYR59

site_idAC7
Number of Residues9
Detailsbinding site for residue OLC A 407
ChainResidue
APHE97
AVAL109
AASN110
AHIS111
ATYR125
ASER128
AOLC408
AOLC409
AOLC410

site_idAC8
Number of Residues1
Detailsbinding site for residue OLC A 408
ChainResidue
AOLC407

site_idAC9
Number of Residues5
Detailsbinding site for residue OLC A 409
ChainResidue
ALEU108
AASN110
APHE113
AOLC407
AHOH517

site_idAD1
Number of Residues5
Detailsbinding site for residue OLC A 410
ChainResidue
AVAL129
ALEU132
APHE136
ALEU190
AOLC407

site_idAD2
Number of Residues2
Detailsbinding site for residue OLC A 411
ChainResidue
AVAL189
AOLC402

Functional Information from PROSITE/UniProt
site_idPS00014
Number of Residues4
DetailsER_TARGET Endoplasmic reticulum targeting sequence. KDEL
ChainResidueDetails
BLYS4-LEU7

site_idPS00951
Number of Residues18
DetailsER_LUMEN_RECEPTOR_1 ER lumen protein retaining receptor signature 1. GISgKsQlLFaLVFttRY
ChainResidueDetails
AGLY31-TYR48

site_idPS00952
Number of Residues10
DetailsER_LUMEN_RECEPTOR_2 ER lumen protein retaining receptor signature 2. LESVAILPQL
ChainResidueDetails
ALEU126-LEU135

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues22
DetailsTopological domain: {"description":"Lumenal","evidences":[{"source":"PubMed","id":"30846601","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues131
DetailsTransmembrane: {"description":"Helical","evidences":[{"source":"PubMed","id":"30846601","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues32
DetailsTopological domain: {"description":"Cytoplasmic","evidences":[{"source":"PubMed","id":"30846601","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues11
DetailsRegion: {"description":"Interaction with the K-D-E-L motif on target proteins","evidences":[{"source":"PubMed","id":"30846601","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues3
DetailsRegion: {"description":"Important for recycling of cargo proteins with the sequence motif K-D-E-L from the Golgi to the endoplasmic reticulum","evidences":[{"source":"PubMed","id":"30846601","evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues3
DetailsSite: {"description":"Interaction with the K-D-E-L motif on target proteins","evidences":[{"source":"PubMed","id":"30846601","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues1
DetailsSite: {"description":"Important for recycling of cargo proteins with the sequence motif K-D-E-L from the Golgi to the endoplasmic reticulum","evidences":[{"source":"UniProtKB","id":"P24390","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

239803

PDB entries from 2025-08-06

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