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- PDB-7xbd: Cryo-EM structure of human galanin receptor 2 -

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Basic information

Entry
Database: PDB / ID: 7xbd
TitleCryo-EM structure of human galanin receptor 2
Components
  • (Guanine nucleotide-binding protein ...) x 3
  • Galanin
  • Galanin receptor type 2
  • scFv16
KeywordsMEMBRANE PROTEIN / GPCR / GALANIN
Function / homology
Function and homology information


galanin-activated signaling pathway / galanin receptor binding / type 1 galanin receptor binding / type 2 galanin receptor binding / type 3 galanin receptor binding / parental behavior / positive regulation of timing of catagen / positive regulation of cortisol secretion / regulation of glucocorticoid metabolic process / galanin receptor activity ...galanin-activated signaling pathway / galanin receptor binding / type 1 galanin receptor binding / type 2 galanin receptor binding / type 3 galanin receptor binding / parental behavior / positive regulation of timing of catagen / positive regulation of cortisol secretion / regulation of glucocorticoid metabolic process / galanin receptor activity / negative regulation of lymphocyte proliferation / inositol phosphate metabolic process / response to peptide / phosphatidylinositol metabolic process / : / drinking behavior / neuropeptide hormone activity / behavioral response to ethanol / feeding behavior / neuropeptide binding / insulin secretion / response to immobilization stress / peptide hormone binding / secretory granule / muscle contraction / Peptide ligand-binding receptors / neuropeptide signaling pathway / locomotory behavior / response to insulin / response to estrogen / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G protein-coupled acetylcholine receptor signaling pathway / neuron projection development / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / photoreceptor disc membrane / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / cellular response to catecholamine stimulus / ADP signalling through P2Y purinoceptor 1 / ADORA2B mediated anti-inflammatory cytokines production / G beta:gamma signalling through PI3Kgamma / adenylate cyclase-activating dopamine receptor signaling pathway / nervous system development / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / cellular response to prostaglandin E stimulus / heterotrimeric G-protein complex / G-protein beta-subunit binding / G alpha (12/13) signalling events / Inactivation, recovery and regulation of the phototransduction cascade / extracellular vesicle / sensory perception of taste / adenylate cyclase-activating G protein-coupled receptor signaling pathway / Thrombin signalling through proteinase activated receptors (PARs) / signaling receptor complex adaptor activity / positive regulation of cytosolic calcium ion concentration / retina development in camera-type eye / GTPase binding / fibroblast proliferation / Ca2+ pathway / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / G alpha (i) signalling events / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (q) signalling events / Ras protein signal transduction / learning or memory / cell population proliferation / Extra-nuclear estrogen signaling / cilium / positive regulation of apoptotic process / response to xenobiotic stimulus / G protein-coupled receptor signaling pathway / lysosomal membrane / neuronal cell body / GTPase activity / synapse / protein-containing complex binding / signal transduction / positive regulation of transcription by RNA polymerase II / : / extracellular exosome / extracellular region
Similarity search - Function
Galanin receptor 2 / Galanin receptor family / Galanin / Galanin precursor / Galanin message associated peptide (GMAP) / Galanin / Galanin message associated peptide (GMAP) / Galanin signature. / Galanin / YVTN repeat-like/Quinoprotein amine dehydrogenase ...Galanin receptor 2 / Galanin receptor family / Galanin / Galanin precursor / Galanin message associated peptide (GMAP) / Galanin / Galanin message associated peptide (GMAP) / Galanin signature. / Galanin / YVTN repeat-like/Quinoprotein amine dehydrogenase / 7 Propeller / Methylamine Dehydrogenase; Chain H / Serpentine type 7TM GPCR chemoreceptor Srsx / 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. / P-loop containing nucleotide triphosphate hydrolases / 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 / Immunoglobulins / Immunoglobulin-like / Sandwich / Rossmann fold / 3-Layer(aba) Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
Galanin receptor type 2 / Galanin peptides / Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
Similarity search - Component
Biological speciesHomo sapiens (human)
Mus musculus (house mouse)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.11 Å
AuthorsIshimoto, N. / Kita, S. / Park, S.Y.
Funding support1items
OrganizationGrant numberCountry
Not funded
CitationJournal: PLoS Biol / Year: 2022
Title: Structure of the human galanin receptor 2 bound to galanin and Gq reveals the basis of ligand specificity and how binding affects the G-protein interface.
Authors: Yunseok Heo / Naito Ishimoto / Ye-Eun Jeon / Ji-Hye Yun / Mio Ohki / Yuki Anraku / Mina Sasaki / Shunsuke Kita / Hideo Fukuhara / Tatsuya Ikuta / Kouki Kawakami / Asuka Inoue / Katsumi ...Authors: Yunseok Heo / Naito Ishimoto / Ye-Eun Jeon / Ji-Hye Yun / Mio Ohki / Yuki Anraku / Mina Sasaki / Shunsuke Kita / Hideo Fukuhara / Tatsuya Ikuta / Kouki Kawakami / Asuka Inoue / Katsumi Maenaka / Jeremy R H Tame / Weontae Lee / Sam-Yong Park /
Abstract: Galanin is a neuropeptide expressed in the central and peripheral nervous systems, where it regulates various processes including neuroendocrine release, cognition, and nerve regeneration. Three G- ...Galanin is a neuropeptide expressed in the central and peripheral nervous systems, where it regulates various processes including neuroendocrine release, cognition, and nerve regeneration. Three G-protein coupled receptors (GPCRs) for galanin have been discovered, which is the focus of efforts to treat diseases including Alzheimer's disease, anxiety, and addiction. To understand the basis of the ligand preferences of the receptors and to assist structure-based drug design, we used cryo-electron microscopy (cryo-EM) to solve the molecular structure of GALR2 bound to galanin and a cognate heterotrimeric G-protein, providing a molecular view of the neuropeptide binding site. Mutant proteins were assayed to help reveal the basis of ligand specificity, and structural comparison between the activated GALR2 and inactive hβ2AR was used to relate galanin binding to the movements of transmembrane (TM) helices and the G-protein interface.
History
DepositionMar 21, 2022Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jul 13, 2022Provider: repository / Type: Initial release
Revision 1.1Aug 10, 2022Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _citation_author.identifier_ORCID / _citation_author.name
Revision 1.2Nov 6, 2024Group: Data collection / Refinement description / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_3d_fitting_list / em_admin / pdbx_entry_details / pdbx_initial_refinement_model / pdbx_modification_feature
Item: _em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id ..._em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id / _em_3d_fitting_list.source_name / _em_3d_fitting_list.type / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Galanin receptor type 2
B: Guanine nucleotide-binding protein G(q) subunit alpha
C: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
D: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
E: scFv16
F: Galanin


Theoretical massNumber of molelcules
Total (without water)145,7436
Polymers145,7436
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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

#2: Protein Guanine nucleotide-binding protein G(q) subunit alpha


Mass: 28084.832 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Spodoptera frugiperda (fall armyworm)
#3: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Transducin beta chain 1


Mass: 37416.930 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNB1 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P62873
#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.) Homo sapiens (human) / Gene: GNG2 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P59768

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Protein / Antibody / Protein/peptide , 3 types, 3 molecules AEF

#1: Protein Galanin receptor type 2 / GAL2-R / GALR-2


Mass: 41744.082 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GALR2, GALNR2 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: O43603
#5: Antibody scFv16


Mass: 27474.574 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Production host: Spodoptera frugiperda (fall armyworm)
#6: Protein/peptide Galanin


Mass: 3161.446 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human) / References: UniProt: P22466

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Details

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

Component
IDNameTypeEntity IDParent-IDSource
1Human galanin receptor 2 complex with Gq heterotrimerCOMPLEXall0MULTIPLE SOURCES
2Human galanin receptor 2COMPLEX#1-#41RECOMBINANT
3scFv16COMPLEX#51RECOMBINANT
4GalaninCOMPLEX#61SYNTHETIC
Molecular weightValue: 0.15 MDa / Experimental value: NO
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
21Homo sapiens (human)9606
32Mus musculus (house mouse)10090
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
21Spodoptera frugiperda (fall armyworm)7108
32Spodoptera frugiperda (fall armyworm)7108
Buffer solutionpH: 7.5
Buffer component
IDConc.NameFormulaBuffer-ID
120 mM2-[4-(2-Hydroxyethyl)-1-piperazinyl]ethanesulfonic acidHEPES1
2100 mMsodium chlorideNaCl1
31 mMmagnesium chlorideMgCl21
40.5 mMtris(2-carboxyethyl)phosphineTCEP1
50.001 %(w/v)Lauryl Maltose Neopentyl GlycolLMNG1
60.0001 %(w/v)cholesteryl homosuccinateCHS1
SpecimenConc.: 1.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3
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 magnification: 130000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 800 nm / Cs: 2.7 mm
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 4.7 sec. / Electron dose: 53.17 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 7216

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Processing

SoftwareName: PHENIX / Version: 1.19.2_4158: / Classification: refinement
EM software
IDNameVersionCategory
4cryoSPARC3.3.1CTF correction
7Coot0.9.5model fitting
9PHENIX1.19.2model refinement
CTF correctionType: NONE
Particle selectionNum. of particles selected: 2666499
3D reconstructionResolution: 3.11 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 479312 / Symmetry type: POINT
Atomic model buildingSpace: REAL
Atomic model buildingPDB-ID: 7EZM

7ezm


Accession code: 7EZM / Source name: PDB / Type: experimental model
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0039172
ELECTRON MICROSCOPYf_angle_d0.50212440
ELECTRON MICROSCOPYf_dihedral_angle_d4.3341262
ELECTRON MICROSCOPYf_chiral_restr0.0411409
ELECTRON MICROSCOPYf_plane_restr0.0041582

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