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- PDB-9izf: Cryo-EM structure of LPA1-Gi complex with LPA -

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Basic information

Entry
Database: PDB / ID: 9izf
TitleCryo-EM structure of LPA1-Gi complex with LPA
Components
  • (Guanine nucleotide-binding protein ...) x 3
  • Soluble cytochrome b562,Lysophosphatidic acid receptor 1,LgBiT tag
  • scFv16
KeywordsMEMBRANE PROTEIN / GPCR / SIGNALING PROTEIN
Function / homology
Function and homology information


cellular response to 1-oleoyl-sn-glycerol 3-phosphate / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Prostacyclin signalling through prostacyclin receptor / lysophosphatidic acid receptor activity / G alpha (z) signalling events / Glucagon-type ligand receptors / G beta:gamma signalling through PI3Kgamma / G beta:gamma signalling through CDC42 / positive regulation of smooth muscle cell chemotaxis ...cellular response to 1-oleoyl-sn-glycerol 3-phosphate / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Prostacyclin signalling through prostacyclin receptor / lysophosphatidic acid receptor activity / G alpha (z) signalling events / Glucagon-type ligand receptors / G beta:gamma signalling through PI3Kgamma / G beta:gamma signalling through CDC42 / positive regulation of smooth muscle cell chemotaxis / G beta:gamma signalling through BTK / Adrenaline,noradrenaline inhibits insulin secretion / ADP signalling through P2Y purinoceptor 12 / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / Thromboxane signalling through TP receptor / Thrombin signalling through proteinase activated receptors (PARs) / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Lysosphingolipid and LPA receptors / G-protein activation / lysophosphatidic acid binding / G alpha (s) signalling events / Ca2+ pathway / G alpha (12/13) signalling events / Extra-nuclear estrogen signaling / G alpha (q) signalling events / Vasopressin regulates renal water homeostasis via Aquaporins / GPER1 signaling / G alpha (i) signalling events / negative regulation of cilium assembly / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / ADP signalling through P2Y purinoceptor 1 / corpus callosum development / bleb assembly / oligodendrocyte development / cellular response to oxygen levels / regulation of synaptic vesicle cycle / regulation of metabolic process / positive regulation of dendritic spine development / optic nerve development / positive regulation of Rho protein signal transduction / regulation of postsynaptic neurotransmitter receptor internalization / negative regulation of cAMP-mediated signaling / G-protein alpha-subunit binding / Adenylate cyclase inhibitory pathway / positive regulation of protein localization to cell cortex / T cell migration / D2 dopamine receptor binding / response to prostaglandin E / G protein-coupled serotonin receptor binding / positive regulation of stress fiber assembly / adenylate cyclase-inhibiting serotonin receptor signaling pathway / adenylate cyclase regulator activity / regulation of mitotic spindle organization / cellular response to forskolin / myelination / cerebellum development / dendritic shaft / GABA-ergic synapse / neurogenesis / PDZ domain binding / cell chemotaxis / Regulation of insulin secretion / G protein-coupled receptor binding / positive regulation of cholesterol biosynthetic process / electron transport chain / G protein-coupled receptor activity / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / response to peptide hormone / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G protein-coupled acetylcholine receptor signaling pathway / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / adenylate cyclase-activating G protein-coupled receptor signaling pathway / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Glucagon signaling in metabolic regulation / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / photoreceptor disc membrane / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / ADORA2B mediated anti-inflammatory cytokines production / cellular response to catecholamine stimulus / ADP signalling through P2Y purinoceptor 1 / GDP binding / G beta:gamma signalling through PI3Kgamma
Similarity search - Function
Lysophosphatidic acid receptor EDG-2 / Lysophosphatidic acid receptor / Cytochrome b562 / Cytochrome b562 / Cytochrome c/b562 / G-protein alpha subunit, group I / Serpentine type 7TM GPCR chemoreceptor Srsx / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit ...Lysophosphatidic acid receptor EDG-2 / Lysophosphatidic acid receptor / Cytochrome b562 / Cytochrome b562 / Cytochrome c/b562 / G-protein alpha subunit, group I / Serpentine type 7TM GPCR chemoreceptor Srsx / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G-alpha domain profile. / G protein alpha subunit / 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 / 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 / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
Chem-NKP / Soluble cytochrome b562 / 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 / Lysophosphatidic acid receptor 1
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
Homo sapiens (human)
synthetic construct (others)
Mus musculus (house mouse)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.14 Å
AuthorsSuzuki, S. / Nishikawa, K. / Kamegawa, A. / Hiroaki, Y. / Suzuki, H. / Fujiyoshi, Y.
Funding support Japan, 1items
OrganizationGrant numberCountry
Japan Society for the Promotion of Science (JSPS)20H00451 Japan
CitationJournal: J Struct Biol / Year: 2025
Title: Structural insights into the engagement of lysophosphatidic acid receptor 1 with different G proteins.
Authors: Shota Suzuki / Kotaro Tanaka / Akiko Kamegawa / Kouki Nishikawa / Hiroshi Suzuki / Atsunori Oshima / Yoshinori Fujiyoshi /
Abstract: Lysophosphatidic acid (LPA) and sphingosine-1-phosphate (S1P) are bioactive lysophospholipids derived from cell membranes that activate the endothelial differentiation gene family of G protein- ...Lysophosphatidic acid (LPA) and sphingosine-1-phosphate (S1P) are bioactive lysophospholipids derived from cell membranes that activate the endothelial differentiation gene family of G protein-coupled receptors. Activation of these receptors triggers multiple downstream signaling cascades through G proteins such as Gi/o, Gq/11, and G12/13. Therefore, LPA and S1P mediate several physiological processes, including cytoskeletal dynamics, neurite retraction, cell migration, cell proliferation, and intracellular ion fluxes. The basis for the G-protein coupling selectivity of EDG receptors, however, remains unknown. Here, we present cryo-electron microscopy structures of LPA-activated LPA1 in complexes with G, G, and G heterotrimers Comparison of the three LPA1-G protein structures shows clearly different conformations of intracellular loop 2 (ICL2) and ICL3 that are likely induced by the different Gα protein interfaces. Interestingly, this G-protein interface interaction is a common feature of LPA and S1P receptors. Our findings provide clues to understanding the promiscuity of G-protein coupling in the endothelial differentiation gene family.
History
DepositionAug 1, 2024Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jan 1, 2025Provider: repository / Type: Initial release
Revision 1.1Jan 15, 2025Group: Data collection / Database references / Category: citation / citation_author / em_admin
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _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 / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
R: Soluble cytochrome b562,Lysophosphatidic acid receptor 1,LgBiT tag
A: Guanine nucleotide-binding protein G(i) subunit alpha-1
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
S: scFv16
hetero molecules


Theoretical massNumber of molelcules
Total (without water)190,0406
Polymers189,6045
Non-polymers4371
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 ABC

#2: Protein Guanine nucleotide-binding protein G(i) subunit alpha-1 / Adenylate cyclase-inhibiting G alpha protein


Mass: 40446.047 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
#3: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Transducin beta chain 1


Mass: 41772.562 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: N-terminal His tag C-terminal GS linker and HiBiT tag
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: 7729.947 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Gene: Gng2 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P63213

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Protein / Antibody / Non-polymers , 3 types, 3 molecules RS

#1: Protein Soluble cytochrome b562,Lysophosphatidic acid receptor 1,LgBiT tag / Cytochrome b-562 / LPA receptor 1 / LPA-1 / Lysophosphatidic acid receptor Edg-2


Mass: 73188.500 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: N-terminal HA signal sequence, FLAG tag C-terminal LgBiT
Source: (gene. exp.) Escherichia coli (E. coli), (gene. exp.) Homo sapiens (human), (gene. exp.) synthetic construct (others)
Gene: cybC, LPAR1, EDG2, LPA1 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P0ABE7, UniProt: Q92633
#5: Antibody scFv16


Mass: 26466.486 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: Chemical ChemComp-NKP / (2R)-2-hydroxy-3-(phosphonooxy)propyl (9E)-octadec-9-enoate / 18:1 LPA / oleoyl lysophosphatidic acid


Mass: 436.520 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C21H41O7P / Feature type: SUBJECT OF INVESTIGATION

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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: Multiprotein complex / Type: COMPLEX / Entity ID: #1-#5 / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.4
SpecimenConc.: 15 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES / Details: This sample was monodisperse
VitrificationCryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 298 K

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Electron microscopy imaging

MicroscopyModel: JEOL CRYO ARM 300
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 71 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.14 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 178606 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0038891
ELECTRON MICROSCOPYf_angle_d0.55812058
ELECTRON MICROSCOPYf_dihedral_angle_d6.9471250
ELECTRON MICROSCOPYf_chiral_restr0.0411395
ELECTRON MICROSCOPYf_plane_restr0.0041510

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