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- PDB-8wz2: Structure of 26RFa-pyroglutamylated RFamide peptide receptor complex -

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Basic information

Entry
Database: PDB / ID: 8wz2
TitleStructure of 26RFa-pyroglutamylated RFamide peptide receptor complex
Components
  • (Guanine nucleotide-binding protein ...) x 2
  • G-alpha q
  • Orexigenic neuropeptide QRFP
  • Pyroglutamylated RF-amide peptide receptor
  • scFV16
KeywordsMEMBRANE PROTEIN / GPCR / 26RFa / GPR103 / pyroglutamylated RFamide peptide
Function / homology
Function and homology information


orexigenic neuropeptide QRFP receptor binding / Orexin and neuropeptides FF and QRFP bind to their respective receptors / neuropeptide Y receptor activity / Orexin and neuropeptides FF and QRFP bind to their respective receptors / G alpha (q) signalling events / regulation of feeding behavior / grooming behavior / positive regulation of blood pressure / G-protein activation / Activation of the phototransduction cascade ...orexigenic neuropeptide QRFP receptor binding / Orexin and neuropeptides FF and QRFP bind to their respective receptors / neuropeptide Y receptor activity / Orexin and neuropeptides FF and QRFP bind to their respective receptors / G alpha (q) signalling events / regulation of feeding behavior / grooming behavior / positive regulation of blood pressure / 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 / neuropeptide hormone activity / 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 / Vasopressin regulates renal water homeostasis via Aquaporins / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / Adrenaline,noradrenaline inhibits insulin secretion / ADP signalling through P2Y purinoceptor 12 / G alpha (q) signalling events / G alpha (i) signalling events / 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 / Glucagon-type ligand receptors / alkylglycerophosphoethanolamine phosphodiesterase activity / Adrenaline,noradrenaline inhibits insulin secretion / G alpha (12/13) signalling events / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / Thrombin signalling through proteinase activated receptors (PARs) / Ca2+ pathway / G alpha (z) signalling events / Extra-nuclear estrogen signaling / G alpha (s) signalling events / G alpha (q) signalling events / photoreceptor outer segment membrane / G alpha (i) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / spectrin binding / Vasopressin regulates renal water homeostasis via Aquaporins / photoreceptor outer segment / neuropeptide signaling pathway / cellular response to hormone stimulus / cardiac muscle cell apoptotic process / photoreceptor inner segment / locomotory behavior / G protein-coupled receptor activity / peptide binding / cellular response to catecholamine stimulus / sensory perception of taste / adenylate cyclase-activating dopamine receptor signaling pathway / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / heterotrimeric G-protein complex / signaling receptor complex adaptor activity / GTPase binding / retina development in camera-type eye / phospholipase C-activating G protein-coupled receptor signaling pathway / cell body / positive regulation of cytosolic calcium ion concentration / cellular response to hypoxia / G alpha (q) signalling events / cell population proliferation / G protein-coupled receptor signaling pathway / GTPase activity / dendrite / protein-containing complex binding / extracellular region / membrane / plasma membrane / cytoplasm
Similarity search - Function
Orexigenic neuropeptide QRFP/P518 / Orexigenic neuropeptide Qrfp/P518 / Neuropeptide Y receptor family / G-protein, gamma subunit / G-protein gamma subunit domain profile. / GGL domain / G-protein gamma-like domain superfamily / G-protein gamma-like domain / GGL domain / G protein gamma subunit-like motifs ...Orexigenic neuropeptide QRFP/P518 / Orexigenic neuropeptide Qrfp/P518 / Neuropeptide Y receptor family / G-protein, gamma subunit / G-protein gamma subunit domain profile. / GGL domain / G-protein gamma-like domain superfamily / G-protein gamma-like domain / GGL domain / G protein gamma subunit-like motifs / Guanine nucleotide-binding protein, beta subunit / G-protein, beta subunit / G-protein coupled receptors family 1 signature. / G protein-coupled receptor, rhodopsin-like / GPCR, rhodopsin-like, 7TM / G-protein coupled receptors family 1 profile. / 7 transmembrane receptor (rhodopsin family) / 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. / WD domain, G-beta repeat / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily
Similarity search - Domain/homology
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / Orexigenic neuropeptide QRFP / Pyroglutamylated RF-amide peptide receptor
Similarity search - Component
Biological speciesHomo sapiens (human)
Rattus norvegicus (Norway rat)
Bos taurus (cattle)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.73 Å
AuthorsJin, S. / Li, X. / Xu, Y. / Guo, S. / Wu, C. / Zhang, H. / Yuan, Q. / Xu, H.E. / Xie, X. / Jiang, Y.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)81902085 China
CitationJournal: Cell Discov / Year: 2024
Title: Structural basis for recognition of 26RFa by the pyroglutamylated RFamide peptide receptor.
Authors: Sanshan Jin / Shimeng Guo / Youwei Xu / Xin Li / Canrong Wu / Xinheng He / Benxun Pan / Wenwen Xin / Heng Zhang / Wen Hu / Yuling Yin / Tianwei Zhang / Kai Wu / Qingning Yuan / H Eric Xu / Xin Xie / Yi Jiang /
Abstract: The neuropeptide 26RFa, a member of the RF-amide peptide family, activates the pyroglutamylated RF-amide peptide receptor (QRFPR), a class A GPCR. The 26RFa/QRFPR system plays critical roles in ...The neuropeptide 26RFa, a member of the RF-amide peptide family, activates the pyroglutamylated RF-amide peptide receptor (QRFPR), a class A GPCR. The 26RFa/QRFPR system plays critical roles in energy homeostasis, making QRFPR an attractive drug target for treating obesity, diabetes, and eating disorders. However, the lack of structural information has hindered our understanding of the peptide recognition and regulatory mechanism of QRFPR, impeding drug design efforts. In this study, we determined the cryo-EM structure of the G-coupled QRFPR bound to 26RFa. The structure reveals a unique assembly mode of the extracellular region of the receptor and the N-terminus of the peptide, and elucidates the recognition mechanism of the C-terminal heptapeptide of 26RFa by the transmembrane binding pocket of QRFPR. The study also clarifies the similarities and distinctions in the binding pattern of the RF-amide moiety in five RF-amide peptides and the RY-amide segment in neuropeptide Y. These findings deepen our understanding of the RF-amide peptide recognition, aiding in the rational design of drugs targeting QRFPR and other RF-amide peptide receptors.
History
DepositionNov 1, 2023Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jun 19, 2024Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: G-alpha q
B: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
E: scFV16
G: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
L: Orexigenic neuropeptide QRFP
R: Pyroglutamylated RF-amide peptide receptor


Theoretical massNumber of molelcules
Total (without water)165,7126
Polymers165,7126
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: gel filtration, Bac-to-Bac Baculovirus was introduced in our expression system. Baculoviruses of QRFPR, engineered G-alpha-q, G-beta-1, G-gamma-2, and scFv16 co-infected Hi5 381 cells. The ...Evidence: gel filtration, Bac-to-Bac Baculovirus was introduced in our expression system. Baculoviruses of QRFPR, engineered G-alpha-q, G-beta-1, G-gamma-2, and scFv16 co-infected Hi5 381 cells. The elution after affinity was purified by Superose 6 column.
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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Protein , 2 types, 2 molecules AR

#1: Protein G-alpha q


Mass: 41724.383 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Trichoplusia ni (cabbage looper)
#6: Protein Pyroglutamylated RF-amide peptide receptor


Mass: 49549.730 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: QRFPR / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q96P65

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Guanine nucleotide-binding protein ... , 2 types, 2 molecules BG

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


Mass: 37416.930 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Gene: Gnb1 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P54311
#4: 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 (cattle) / Gene: GNG2 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P63212

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Antibody / Protein/peptide , 2 types, 2 molecules EL

#3: Antibody scFV16


Mass: 26277.299 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Trichoplusia ni (cabbage looper)
#5: Protein/peptide Orexigenic neuropeptide QRFP / 26RFa


Mass: 2882.194 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: Qrfp / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q8CE23

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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: Structure of 26RFa-pyroglutamylated RFamide peptide receptor-G protein complex
Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Molecular weightValue: 0.16 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Trichoplusia ni (cabbage looper)
Buffer solutionpH: 7.2
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: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 5000 nm / Nominal defocus min: 1200 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.73 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 202884 / Symmetry type: POINT

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