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- PDB-22es: Gi bound kappa-opioid receptor in complex with difelikefalin -

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Basic information

Entry
Database: PDB / ID: 22es
TitleGi bound kappa-opioid receptor in complex with difelikefalin
Components
  • (Guanine nucleotide-binding protein ...) x 3
  • DPN-DPN-DLE-DLY-A1L9X
  • Kappa-type opioid receptor
  • scFv16
KeywordsSIGNALING PROTEIN/IMMUNE SYSTEM / GPCR / opioid receptor / SIGNALING PROTEIN-IMMUNE SYSTEM complex
Function / homology
Function and homology information


response to acrylamide / dynorphin receptor activity / regulation of saliva secretion / sensory perception of temperature stimulus / positive regulation of eating behavior / adenylate cyclase-inhibiting opioid receptor signaling pathway / negative regulation of luteinizing hormone secretion / G protein-coupled opioid receptor activity / G protein-coupled opioid receptor signaling pathway / positive regulation of dopamine secretion ...response to acrylamide / dynorphin receptor activity / regulation of saliva secretion / sensory perception of temperature stimulus / positive regulation of eating behavior / adenylate cyclase-inhibiting opioid receptor signaling pathway / negative regulation of luteinizing hormone secretion / G protein-coupled opioid receptor activity / G protein-coupled opioid receptor signaling pathway / positive regulation of dopamine secretion / positive regulation of potassium ion transmembrane transport / receptor serine/threonine kinase binding / maternal behavior / G-protein activation / Activation of the phototransduction cascade / Glucagon-type ligand receptors / Thromboxane signalling through TP receptor / Sensory perception of sweet, bitter, and umami (glutamate) taste / G beta:gamma signalling through PI3Kgamma / G beta:gamma signalling through CDC42 / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Ca2+ pathway / G alpha (z) signalling events / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / positive regulation of p38MAPK cascade / Vasopressin regulates renal water homeostasis via Aquaporins / Adrenaline,noradrenaline inhibits insulin secretion / ADP signalling through P2Y purinoceptor 12 / G alpha (q) signalling events / G alpha (i) signalling events / sensory perception / neuropeptide binding / Thrombin signalling through proteinase activated receptors (PARs) / Activation of G protein gated Potassium channels / G-protein activation / G beta:gamma signalling through PI3Kgamma / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through PLC beta / ADP signalling through P2Y purinoceptor 1 / Thromboxane signalling through TP receptor / Presynaptic function of Kainate receptors / G beta:gamma signalling through CDC42 / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G alpha (12/13) signalling events / Glucagon-type ligand receptors / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Adrenaline,noradrenaline inhibits insulin secretion / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / Ca2+ pathway / G alpha (z) signalling events / Thrombin signalling through proteinase activated receptors (PARs) / Extra-nuclear estrogen signaling / eating behavior / G alpha (s) signalling events / G alpha (q) signalling events / photoreceptor outer segment membrane / spectrin binding / G alpha (i) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / Vasopressin regulates renal water homeostasis via Aquaporins / alkylglycerophosphoethanolamine phosphodiesterase activity / photoreceptor outer segment / conditioned place preference / estrous cycle / MECP2 regulates neuronal receptors and channels / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / cardiac muscle cell apoptotic process / T cell migration / behavioral response to cocaine / positive regulation of relaxation of smooth muscle / Adenylate cyclase inhibitory pathway / photoreceptor inner segment / D2 dopamine receptor binding / adenylate cyclase-inhibiting serotonin receptor signaling pathway / G protein-coupled serotonin receptor binding / T-tubule / sensory perception of pain / axon terminus / cellular response to forskolin / Peptide ligand-binding receptors / regulation of mitotic spindle organization / chemokine-mediated signaling pathway / sarcoplasmic reticulum / response to nicotine / Regulation of insulin secretion / neuropeptide signaling pathway / locomotory behavior / response to prostaglandin E / cellular response to glucose stimulus / positive regulation of cholesterol biosynthetic process / response to insulin / negative regulation of insulin secretion / G protein-coupled receptor binding / response to estrogen
Similarity search - Function
Kappa opioid receptor / Opioid receptor / G-protein alpha subunit, group I / Serpentine type 7TM GPCR chemoreceptor Srsx / G protein alpha subunit, helical insertion / G protein alpha subunit / Guanine nucleotide binding protein (G-protein), alpha subunit / G-protein alpha subunit / G-alpha domain profile. / G-protein, gamma subunit ...Kappa opioid receptor / Opioid receptor / G-protein alpha subunit, group I / Serpentine type 7TM GPCR chemoreceptor Srsx / G protein alpha subunit, helical insertion / G protein alpha subunit / Guanine nucleotide binding protein (G-protein), alpha subunit / G-protein alpha subunit / G-alpha domain profile. / G-protein, gamma subunit / G-protein gamma subunit domain profile. / G-protein gamma-like domain / G-protein gamma-like domain superfamily / GGL domain / G protein gamma subunit-like motifs / GGL domain / G protein beta WD-40 repeat protein / Guanine nucleotide-binding protein, beta subunit / G-protein, beta subunit / G-protein coupled receptors family 1 signature. / 7 transmembrane receptor (rhodopsin family) / G protein-coupled receptor, rhodopsin-like / GPCR, rhodopsin-like, 7TM / G-protein coupled receptors family 1 profile. / G-protein beta WD-40 repeat / WD40 repeat, conserved site / Trp-Asp (WD) repeats signature. / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
CHOLESTEROL / polypeptide(D) / Kappa-type opioid receptor / Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Guanine nucleotide-binding protein G(i) subunit alpha-1 / Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat)
Bos taurus (domestic cattle)
Homo sapiens (human)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.43 Å
AuthorsZhang, H. / Wang, R. / Shi, P. / He, X. / Zhu, Q. / Xu, Y. / Yuan, Q. / Hu, W. / Wu, K. / Zheng, Y. ...Zhang, H. / Wang, R. / Shi, P. / He, X. / Zhu, Q. / Xu, Y. / Yuan, Q. / Hu, W. / Wu, K. / Zheng, Y. / Zhou, L. / Liang, J. / Lv, P. / Xu, Z. / Zhuang, Y. / Xu, H. / Wang, Y. / Tian, C.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)32130022 China
CitationJournal: To Be Published
Title: Gi bound kappa-opioid receptor in complex with difelikefalin
Authors: Zhang, H. / Wang, R. / Shi, P. / He, X. / Zhu, Q. / Xu, Y. / Yuan, Q. / Hu, W. / Wu, K. / Zheng, Y. / Zhou, L. / Liang, J. / Lv, P. / Xu, Z. / Zhuang, Y. / Xu, H. / Wang, Y. / Tian, C.
History
DepositionJan 8, 2026Deposition site: PDBJ / Processing site: PDBC
Revision 1.0May 6, 2026Provider: repository / Type: Initial release
Revision 1.0May 6, 2026Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0May 6, 2026Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0May 6, 2026Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0May 6, 2026Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0May 6, 2026Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
B: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
C: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
R: Kappa-type opioid receptor
D: Guanine nucleotide-binding protein G(i) subunit alpha-1
E: scFv16
A: DPN-DPN-DLE-DLY-A1L9X
hetero molecules


Theoretical massNumber of molelcules
Total (without water)162,6549
Polymers161,4946
Non-polymers1,1603
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Guanine nucleotide-binding protein ... , 3 types, 3 molecules BCD

#1: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Transducin beta chain 1


Mass: 39151.855 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Gene: Gnb1 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P54311
#2: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / G gamma-I


Mass: 7861.143 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Bos taurus (domestic cattle) / Gene: GNG2 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P63212
#4: Protein Guanine nucleotide-binding protein G(i) subunit alpha-1 / Adenylate cyclase-inhibiting G alpha protein


Mass: 40414.047 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNAI1 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P63096

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Protein / Antibody / Polypeptide(D) / Non-polymers , 4 types, 6 molecules REA

#3: Protein Kappa-type opioid receptor / K-OR-1 / KOR-1


Mass: 44780.062 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: OPRK1, OPRK / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P41145
#5: Antibody scFv16


Mass: 28606.746 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) synthetic construct (others) / Production host: Spodoptera frugiperda (fall armyworm)
#6: Polypeptide(D) DPN-DPN-DLE-DLY-A1L9X


Mass: 679.850 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#7: Chemical ChemComp-CLR / CHOLESTEROL


Mass: 386.654 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C27H46O

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Details

Has ligand of interestY
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Gi bound kappa-opioid receptor in complex with difelikefalin
Type: COMPLEX / Entity ID: #1-#2, #4-#5, #3 / Source: MULTIPLE SOURCES
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Talos Arctica / Image courtesy: FEI Company
MicroscopyModel: FEI TALOS ARCTICA
Electron gunElectron source: OTHER / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: OTHER / Nominal defocus max: 3000 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 BIOCONTINUUM (6k x 4k)

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Processing

EM software
IDNameCategory
1cryoSPARCparticle selection
13cryoSPARC3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.43 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 623181 / Symmetry type: POINT
RefinementStereochemistry target values: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS)
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0029254
ELECTRON MICROSCOPYf_angle_d0.55912543
ELECTRON MICROSCOPYf_dihedral_angle_d36.9441345
ELECTRON MICROSCOPYf_chiral_restr0.041442
ELECTRON MICROSCOPYf_plane_restr0.0041562

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