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- EMDB-35298: Cryo-EM structure of C3aR-Gi-scFv16 bound with E7 peptide -

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Entry
Database: EMDB / ID: EMD-35298
TitleCryo-EM structure of C3aR-Gi-scFv16 bound with E7 peptide
Map data
Sample
  • Complex: C3aR-Gi-scFv16-E7 complex
    • Complex: C3a-analog peptide E7
      • Protein or peptide: ALA-SER-LYS-LEU-GLY-LEU-ALA-ARG
    • Complex: C3aR-Gi
      • Protein or peptide: C3a anaphylatoxin chemotactic receptor
      • 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
    • Complex: scFv16
      • Protein or peptide: scFv16
Keywordsanaphylatoxin / complement / immune response / IMMUNE SYSTEM
Function / homology
Function and homology information


complement component C3a receptor activity / complement component C5a receptor activity / complement receptor mediated signaling pathway / blood circulation / positive regulation of neutrophil chemotaxis / azurophil granule membrane / positive regulation of macrophage chemotaxis / positive regulation of vascular endothelial growth factor production / T cell migration / D2 dopamine receptor binding ...complement component C3a receptor activity / complement component C5a receptor activity / complement receptor mediated signaling pathway / blood circulation / positive regulation of neutrophil chemotaxis / azurophil granule membrane / positive regulation of macrophage chemotaxis / positive regulation of vascular endothelial growth factor production / T cell migration / D2 dopamine receptor binding / Adenylate cyclase inhibitory pathway / positive regulation of protein localization to cell cortex / Purinergic signaling in leishmaniasis infection / regulation of cAMP-mediated signaling / specific granule membrane / G protein-coupled serotonin receptor binding / cellular response to forskolin / regulation of mitotic spindle organization / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / Peptide ligand-binding receptors / Regulation of Complement cascade / Regulation of insulin secretion / G protein-coupled receptor binding / G protein-coupled receptor activity / calcium-mediated signaling / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / Olfactory Signaling Pathway / Activation of the phototransduction cascade / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / Glucagon signaling in metabolic regulation / 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 / G beta:gamma signalling through CDC42 / response to peptide hormone / Vasopressin regulates renal water homeostasis via Aquaporins / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / Glucagon-type ligand receptors / Sensory perception of sweet, bitter, and umami (glutamate) taste / photoreceptor disc membrane / G alpha (z) signalling events / Adrenaline,noradrenaline inhibits insulin secretion / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / ADORA2B mediated anti-inflammatory cytokines production / cellular response to catecholamine stimulus / sensory perception of taste / positive regulation of angiogenesis / ADP signalling through P2Y purinoceptor 1 / adenylate cyclase-activating dopamine receptor signaling pathway / G beta:gamma signalling through PI3Kgamma / GPER1 signaling / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / chemotaxis / GDP binding / cellular response to prostaglandin E stimulus / Inactivation, recovery and regulation of the phototransduction cascade / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / extracellular vesicle / signaling receptor complex adaptor activity / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / retina development in camera-type eye / Ca2+ pathway / cell cortex / phospholipase C-activating G protein-coupled receptor signaling pathway / positive regulation of cytosolic calcium ion concentration / G alpha (i) signalling events / midbody / fibroblast proliferation / G alpha (s) signalling events / G alpha (q) signalling events / Ras protein signal transduction / cell population proliferation / Extra-nuclear estrogen signaling / inflammatory response / G protein-coupled receptor signaling pathway / lysosomal membrane / cell division / GTPase activity / centrosome / Neutrophil degranulation / synapse / GTP binding / protein-containing complex binding / nucleolus / magnesium ion binding / signal transduction / extracellular exosome / nucleoplasm / membrane
Similarity search - Function
C3a anaphylatoxin chemotactic receptor / Anaphylatoxin chemotactic receptor, C3a/C5a1/C5a2 / Formyl peptide receptor-related / G-protein alpha subunit, group I / G protein alpha subunit, helical insertion / G protein alpha subunit / Guanine nucleotide binding protein (G-protein), alpha subunit / G-alpha domain profile. / G-protein alpha subunit / G-protein, gamma subunit ...C3a anaphylatoxin chemotactic receptor / Anaphylatoxin chemotactic receptor, C3a/C5a1/C5a2 / Formyl peptide receptor-related / G-protein alpha subunit, group I / G protein alpha subunit, helical insertion / G protein alpha subunit / Guanine nucleotide binding protein (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 superfamily / GGL domain / 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 / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
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 / Guanine nucleotide-binding protein G(i) subunit alpha-1 / C3a anaphylatoxin chemotactic receptor
Similarity search - Component
Biological speciesHomo sapiens (human) / Vicugna pacos (alpaca)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.86 Å
AuthorsLiao Q / Chen G / Du Y / Ye RD
Funding support China, 1 items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: To Be Published
Title: Cryo-EM structure of C3aR-Gi-scFv16 bound with E7 peptide
Authors: Liao Q / Chen G / Du Y / Ye RD
History
DepositionFeb 8, 2023-
Header (metadata) releaseMay 24, 2023-
Map releaseMay 24, 2023-
UpdateOct 16, 2024-
Current statusOct 16, 2024Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

Downloads & links

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Map

FileDownload / File: emd_35298.map.gz / Format: CCP4 / Size: 125 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.85 Å/pix.
x 320 pix.
= 272. Å
0.85 Å/pix.
x 320 pix.
= 272. Å
0.85 Å/pix.
x 320 pix.
= 272. Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.85 Å
Density
Contour LevelBy AUTHOR: 0.0842
Minimum - Maximum-0.64371866 - 0.9804431
Average (Standard dev.)-0.00019256561 (±0.01939921)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions320320320
Spacing320320320
CellA=B=C: 272.0 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_35298_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

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Half map: #1

Fileemd_35298_half_map_2.map
Projections & Slices
AxesZYX

Projections

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Sample components

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Entire : C3aR-Gi-scFv16-E7 complex

EntireName: C3aR-Gi-scFv16-E7 complex
Components
  • Complex: C3aR-Gi-scFv16-E7 complex
    • Complex: C3a-analog peptide E7
      • Protein or peptide: ALA-SER-LYS-LEU-GLY-LEU-ALA-ARG
    • Complex: C3aR-Gi
      • Protein or peptide: C3a anaphylatoxin chemotactic receptor
      • 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
    • Complex: scFv16
      • Protein or peptide: scFv16

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Supramolecule #1: C3aR-Gi-scFv16-E7 complex

SupramoleculeName: C3aR-Gi-scFv16-E7 complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Molecular weightTheoretical: 150 KDa

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Supramolecule #2: C3a-analog peptide E7

SupramoleculeName: C3a-analog peptide E7 / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1
Source (natural)Organism: Homo sapiens (human)

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Supramolecule #3: C3aR-Gi

SupramoleculeName: C3aR-Gi / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #2-#5
Details: complement C3a receptor 1, Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,Guanine nucleotide-binding protein G(I) ...Details: complement C3a receptor 1, Guanine nucleotide-binding protein G(i) subunit alpha-1,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
Source (natural)Organism: Homo sapiens (human)

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Supramolecule #4: scFv16

SupramoleculeName: scFv16 / type: complex / ID: 4 / Parent: 1 / Macromolecule list: #6
Source (natural)Organism: Vicugna pacos (alpaca)

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Macromolecule #1: ALA-SER-LYS-LEU-GLY-LEU-ALA-ARG

MacromoleculeName: ALA-SER-LYS-LEU-GLY-LEU-ALA-ARG / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 1.825188 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
WWGKKYRASK LGLAR

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Macromolecule #2: C3a anaphylatoxin chemotactic receptor

MacromoleculeName: C3a anaphylatoxin chemotactic receptor / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 53.906902 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MASFSAETNS TDLLSQPWNE PPVILSMVIL SLTFLLGLPG NGLVLWVAGL KMQRTVNTIW FLHLTLADLL CCLSLPFSLA HLALQGQWP YGRFLCKLIP SIIVLNMFAS VFLLTAISLD RCLVVFKPIW CQNHRNVGMA CSICGCIWVV AFVMCIPVFV Y REIFTTDN ...String:
MASFSAETNS TDLLSQPWNE PPVILSMVIL SLTFLLGLPG NGLVLWVAGL KMQRTVNTIW FLHLTLADLL CCLSLPFSLA HLALQGQWP YGRFLCKLIP SIIVLNMFAS VFLLTAISLD RCLVVFKPIW CQNHRNVGMA CSICGCIWVV AFVMCIPVFV Y REIFTTDN HNRCGYKFGL SSSLDYPDFY GDPLENRSLE NIVQPPGEMN DRLDPSSFQT NDHPWTVPTV FQPQTFQRPS AD SLPRGSA RLTSQNLYSN VFKPADVVSP KIPSGFPIED HETSPLDNSD AFLSTHLKLF PSASSNSFYE SELPQGFQDY YNL GQFTDD DQVPTPLVAI TITRLVVGFL LPSVIMIACY SFIVFRMQRG RFAKSQSKTF RVAVVVVAVF LVCWTPYHIF GVLS LLTDP ETPLGKTLMS WDHVCIALAS ANSCFNPFLY ALLGKDFRKK ARQSIQGILE AAFSEELTRS THCPSNNVIS ERNST TV

UniProtKB: C3a anaphylatoxin chemotactic receptor

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Macromolecule #3: Guanine nucleotide-binding protein G(i) subunit alpha-1

MacromoleculeName: Guanine nucleotide-binding protein G(i) subunit alpha-1
type: protein_or_peptide / ID: 3
Details: The mutations are presented in the DNGalpha-i1 incorporates the G203A and A326S mutations, which was adopted for its decreased affinity for nucleotide binding and increased stability for the ...Details: The mutations are presented in the DNGalpha-i1 incorporates the G203A and A326S mutations, which was adopted for its decreased affinity for nucleotide binding and increased stability for the complex formation (Lee E., et al., 1992; Posner B.A., et al., 1998).
Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 40.153672 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: TLSAEDKAAV ERSKMIDRNL REDGEKAARE VKLLLLGAGE SGKSTIVKQM KIIHEAGYSE EECKQYKAVV YSNTIQSIIA IIRAMGRLK IDFGDSARAD DARQLFVLAG AAEEGFMTAE LAGVIKRLWK DSGVQACFNR SREYQLNDSA AYYLNDLDRI A QPNYIPTQ ...String:
TLSAEDKAAV ERSKMIDRNL REDGEKAARE VKLLLLGAGE SGKSTIVKQM KIIHEAGYSE EECKQYKAVV YSNTIQSIIA IIRAMGRLK IDFGDSARAD DARQLFVLAG AAEEGFMTAE LAGVIKRLWK DSGVQACFNR SREYQLNDSA AYYLNDLDRI A QPNYIPTQ QDVLRTRVKT TGIVETHFTF KDLHFKMFDV GAQRSERKKW IHCFEGVTAI IFCVALSDYD LVLAEDEEMN RM HESMKLF DSICNNKWFT DTSIILFLNK KDLFEEKIKK SPLTICYPEY AGSNTYEEAA AYIQCQFEDL NKRKDTKEIY THF TCSTDT KNVQFVFDAV TDVIIKNNLK DCGLF

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

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Macromolecule #4: 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: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 37.41693 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL VSASQDGKLI IWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR EGNVRVSREL AGHTGYLSCC RFLDDNQIVT S SGDTTCAL ...String:
MSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL VSASQDGKLI IWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR EGNVRVSREL AGHTGYLSCC RFLDDNQIVT S SGDTTCAL WDIETGQQTT TFTGHTGDVM SLSLAPDTRL FVSGACDASA KLWDVREGMC RQTFTGHESD INAICFFPNG NA FATGSDD ATCRLFDLRA DQELMTYSHD NIICGITSVS FSKSGRLLLA GYDDFNCNVW DALKADRAGV LAGHDNRVSC LGV TDDGMA VATGSWDSFL KIWN

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

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Macromolecule #5: 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: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 7.861143 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString:
MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L

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

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Macromolecule #6: scFv16

MacromoleculeName: scFv16 / type: protein_or_peptide / ID: 6
Details: a single-chain variable fragment (scFv16) derived from a developed antibody that bind to the αN helix of Gαi subunit used to stabilize the GPCR-G protein complex (https://doi. ...Details: a single-chain variable fragment (scFv16) derived from a developed antibody that bind to the αN helix of Gαi subunit used to stabilize the GPCR-G protein complex (https://doi.org/10.1038/s41467-018-06002-w)
Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Vicugna pacos (alpaca)
Molecular weightTheoretical: 26.337307 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

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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

Concentration5 mg/mL
BufferpH: 7.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 1.13 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: 1.2 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 3959232
Startup modelType of model: OTHER / Details: alphafold
Final reconstructionNumber classes used: 1 / Resolution.type: BY AUTHOR / Resolution: 2.86 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 1737212
Initial angle assignmentType: ANGULAR RECONSTITUTION
Final angle assignmentType: ANGULAR RECONSTITUTION
Final 3D classificationNumber classes: 3
FSC plot (resolution estimation)

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