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- EMDB-61031: Cryo-EM structure of LPA1-Gi complex with LPA -

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Entry
Database: EMDB / ID: EMD-61031
TitleCryo-EM structure of LPA1-Gi complex with LPA
Map datamap
Sample
  • Complex: Multiprotein complex
    • Protein or peptide: Soluble cytochrome b562,Lysophosphatidic acid receptor 1,LgBiT tag
    • Protein or peptide: Guanine nucleotide-binding protein G(i) subunit alpha-1
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
    • Protein or peptide: scFv16
  • Ligand: (2R)-2-hydroxy-3-(phosphonooxy)propyl (9E)-octadec-9-enoate
KeywordsGPCR / SIGNALING PROTEIN / MEMBRANE 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 / Adrenaline,noradrenaline inhibits insulin secretion / ADP signalling through P2Y purinoceptor 12 / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / G beta:gamma signalling through BTK / 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 / negative regulation of cilium assembly / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (i) signalling events / corpus callosum development / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / ADP signalling through P2Y purinoceptor 1 / bleb assembly / cellular response to oxygen levels / optic nerve development / oligodendrocyte development / regulation of synaptic vesicle cycle / negative regulation of cAMP/PKA signal transduction / regulation of metabolic process / regulation of postsynaptic neurotransmitter receptor internalization / positive regulation of Rho protein signal transduction / positive regulation of dendritic spine development / G-protein alpha-subunit binding / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / Adenylate cyclase inhibitory pathway / T cell migration / positive regulation of stress fiber assembly / D2 dopamine receptor binding / response to prostaglandin E / adenylate cyclase regulator activity / G protein-coupled serotonin receptor binding / adenylate cyclase-inhibiting serotonin receptor signaling pathway / neurogenesis / myelination / cellular response to forskolin / regulation of mitotic spindle organization / cerebellum development / dendritic shaft / cell chemotaxis / PDZ domain binding / Regulation of insulin secretion / positive regulation of cholesterol biosynthetic process / negative regulation of insulin secretion / electron transport chain / G protein-coupled receptor binding / G protein-coupled receptor activity / response to peptide hormone / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / GABA-ergic synapse / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / centriolar satellite / 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 / adenylate cyclase-activating G protein-coupled receptor signaling pathway / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / 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 / photoreceptor disc membrane / 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 / GDP binding / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / cellular response to catecholamine stimulus
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 / G protein beta WD-40 repeat protein / 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. / 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
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 speciesHomo sapiens (human) / synthetic construct (others) / Mus musculus (house mouse)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.14 Å
AuthorsSuzuki S / Nishikawa K / Kamegawa A / Hiroaki Y / Suzuki H / Fujiyoshi Y
Funding support Japan, 1 items
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, 2024-
Header (metadata) releaseJan 1, 2025-
Map releaseJan 1, 2025-
UpdateJul 2, 2025-
Current statusJul 2, 2025Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_61031.png

Downloads & links

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Map

FileDownload / File: emd_61031.map.gz / Format: CCP4 / Size: 125 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationmap
Projections & slices

Image control

Size
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AxesZ (Sec.)Y (Row.)X (Col.)
0.75 Å/pix.
x 320 pix.
= 240. Å		0.75 Å/pix.
x 320 pix.
= 240. Å		0.75 Å/pix.
x 320 pix.
= 240. Å

Surface

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Images are generated by Spider.

Voxel sizeX=Y=Z: 0.75 Å
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Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.3
Minimum - Maximum-2.4873238 - 3.4612482
Average (Standard dev.)-0.0015736988 (±0.073246896)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions320320320
Spacing320320320
CellA=B=C: 240.0 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_61031_msk_1.map
Projections & Slices
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Half map: half A

Fileemd_61031_half_map_1.map
Annotationhalf A
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Half map: harf B

Fileemd_61031_half_map_2.map
Annotationharf B
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Sample components

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Entire : Multiprotein complex

EntireName: Multiprotein complex
Components
  • Complex: Multiprotein complex
    • Protein or peptide: Soluble cytochrome b562,Lysophosphatidic acid receptor 1,LgBiT tag
    • Protein or peptide: Guanine nucleotide-binding protein G(i) subunit alpha-1
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
    • Protein or peptide: scFv16
  • Ligand: (2R)-2-hydroxy-3-(phosphonooxy)propyl (9E)-octadec-9-enoate

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Supramolecule #1: Multiprotein complex

SupramoleculeName: Multiprotein complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Soluble cytochrome b562,Lysophosphatidic acid receptor 1,LgBiT tag

MacromoleculeName: Soluble cytochrome b562,Lysophosphatidic acid receptor 1,LgBiT tag
type: protein_or_peptide / ID: 1
Details: N-terminal HA signal sequence, FLAG tag C-terminal LgBiT
Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 73.1885 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MKTIIALSYI FCLVFADYKD DDDKADLEDN WETLNDNLKV IEKADNAAQV KDALTKMRAA ALDAQKATPP KLEDKSPDSP EMKDFRHGF DILVGQIDDA LKLANEGKVK EAQAAAEQLK TTRNAYIQKY LAAISTSIPV ISQPQFTAMN EPQCFYNESI A FFYNRSGK ...String:
MKTIIALSYI FCLVFADYKD DDDKADLEDN WETLNDNLKV IEKADNAAQV KDALTKMRAA ALDAQKATPP KLEDKSPDSP EMKDFRHGF DILVGQIDDA LKLANEGKVK EAQAAAEQLK TTRNAYIQKY LAAISTSIPV ISQPQFTAMN EPQCFYNESI A FFYNRSGK HLATEWNTVS KLVMGLGITV CIFIMLANLL VMVAIYVNRR FHFPIYYLMA NLAAADFFAG LAYFYLMFNT GP NTRRLTV STWLLRQGLI DTSLTASVAN LLAIAIERHI TVFRMQLHTR MSNRRVVVVI VVIWTMAIVM GAIPSVGWNC ICD IENCSN MAPLYSDSYL VFWAIFNLVT FVVMVVLYAH IFGYVRQRTM RMSRHSSGPR RNRDTMMSLL KTVVIVLGAF IICW TPGLV LLLLDVCCPQ CDVLAYEKFF LLLAEFNSAM NPIIYSYRDK EMSATFRQIL CCQRSENPTG PTEGSDRSAS SLNHT ILAG VHSNDHSVVV FTLEDFVGDW EQTAAYNLDQ VLEQGGVSSL LQNLAVSVTP IQRIVRSGEN ALKIDIHVII PYEGLS ADQ MAQIEEVFKV VYPVDDHHFK VILPYGTLVI DGVTPNMLNY FGRPYEGIAV FDGKKITVTG TLWNGNKIID ERLITPD GS MLFRVTINS

UniProtKB: Soluble cytochrome b562, Lysophosphatidic acid receptor 1

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Macromolecule #2: Guanine nucleotide-binding protein G(i) subunit alpha-1

MacromoleculeName: Guanine nucleotide-binding protein G(i) subunit alpha-1
type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 40.446047 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MGCTLSAEDK AAVERSKMID RNLREDGEKA AREVKLLLLG AGESGKSTIV KQMKIIHEAG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI ...String:
MGCTLSAEDK AAVERSKMID RNLREDGEKA AREVKLLLLG AGESGKSTIV KQMKIIHEAG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI PTQQDVLRTR VKTTGIVETH FTFKDLHFKM FDVGAQRSER KKWIHCFEGV AAIIFCVALS DYDLVLAEDE EM NRMHESM KLFDSICNNK WFTDTSIILF LNKKDLFEEK IKKSPLTICY QEYAGSNTYE EAAAYIQCQF EDLNKRKDTK EIY THFTCS TDTKNVQFVF DAVTDVIIKN NLKDCGLF

UniProtKB: Guanine nucleotide-binding protein G(i) subunit alpha-1

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Macromolecule #3: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1

MacromoleculeName: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
type: protein_or_peptide / ID: 3
Details: N-terminal His tag C-terminal GS linker and HiBiT tag
Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 41.772562 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MHHHHHHHHE NLYFQGSSEL DQLRQEAEQL KNQIRDARKA CADATLSQIT NNIDPVGRIQ MRTRRTLRGH LAKIYAMHWG TDSRLLVSA SQDGKLIIWD SYTTNKVHAI PLRSSWVMTC AYAPSGNYVA CGGLDNICSI YNLKTREGNV RVSRELAGHT G YLSCCRFL ...String:
MHHHHHHHHE NLYFQGSSEL DQLRQEAEQL KNQIRDARKA CADATLSQIT NNIDPVGRIQ MRTRRTLRGH LAKIYAMHWG TDSRLLVSA SQDGKLIIWD SYTTNKVHAI PLRSSWVMTC AYAPSGNYVA CGGLDNICSI YNLKTREGNV RVSRELAGHT G YLSCCRFL DDNQIVTSSG DTTCALWDIE TGQQTTTFTG HTGDVMSLSL APDTRLFVSG ACDASAKLWD VREGMCRQTF TG HESDINA ICFFPNGNAF ATGSDDATCR LFDLRADQEL MTYSHDNIIC GITSVSFSKS GRLLLAGYDD FNCNVWDALK ADR AGVLAG HDNRVSCLGV TDDGMAVATG SWDSFLKIWN GGSGGGGSGG SSSGGVSGWR LFKKIS

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

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Macromolecule #4: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2

MacromoleculeName: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Mus musculus (house mouse)
Molecular weightTheoretical: 7.729947 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString:
ASNNTASIAQ ARKLVEQLKM EANIDRIKVS KAAADLMAYC EAHAKEDPLL TPVPASENPF REKKFFCAIL

UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2

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Macromolecule #5: scFv16

MacromoleculeName: scFv16 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 26.466486 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: DVQLVESGGG LVQPGGSRKL SCSASGFAFS SFGMHWVRQA PEKGLEWVAY ISSGSGTIYY ADTVKGRFTI SRDDPKNTLF LQMTSLRSE DTAMYYCVRS IYYYGSSPFD FWGQGTTLTV SSGGGGSGGG GSGGGGSDIV MTQATSSVPV TPGESVSISC R SSKSLLHS ...String:
DVQLVESGGG LVQPGGSRKL SCSASGFAFS SFGMHWVRQA PEKGLEWVAY ISSGSGTIYY ADTVKGRFTI SRDDPKNTLF LQMTSLRSE DTAMYYCVRS IYYYGSSPFD FWGQGTTLTV SSGGGGSGGG GSGGGGSDIV MTQATSSVPV TPGESVSISC R SSKSLLHS NGNTYLYWFL QRPGQSPQLL IYRMSNLASG VPDRFSGSGS GTAFTLTISR LEAEDVGVYY CMQHLEYPLT FG AGTKLEL K

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Macromolecule #6: (2R)-2-hydroxy-3-(phosphonooxy)propyl (9E)-octadec-9-enoate

MacromoleculeName: (2R)-2-hydroxy-3-(phosphonooxy)propyl (9E)-octadec-9-enoate
type: ligand / ID: 6 / Number of copies: 1 / Formula: NKP
Molecular weightTheoretical: 436.52 Da
Chemical component information

ChemComp-NKP:
(2R)-2-hydroxy-3-(phosphonooxy)propyl (9E)-octadec-9-enoate

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

Concentration15 mg/mL
BufferpH: 7.4
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 298 K
DetailsThis sample was monodisperse

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Electron microscopy

MicroscopeJEOL CRYO ARM 300
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Average electron dose: 71.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.0 µm

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Image processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: OTHER
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.14 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 178606
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: OTHER

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