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- EMDB-34846: C5aR1-Gi-C5a protein complex -

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Basic information

Entry
Database: EMDB / ID: EMD-34846
TitleC5aR1-Gi-C5a protein complex
Map data
Sample
  • Complex: C5aR1-Gi-C5a protein complex
    • Protein or peptide: C5a anaphylatoxin chemotactic receptor 1
    • Protein or peptide: Complement C5
    • 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 subunit gamma
  • Ligand: PALMITIC ACID
KeywordsGPCR / C5aR1 / C5a / complement / MEMBRANE PROTEIN
Function / homology
Function and homology information


presynapse organization / complement component C5a signaling pathway / Terminal pathway of complement / complement component C5a receptor activity / membrane attack complex / response to peptidoglycan / Activation of C3 and C5 / complement activation, GZMK pathway / negative regulation of macrophage chemotaxis / sensory perception of chemical stimulus ...presynapse organization / complement component C5a signaling pathway / Terminal pathway of complement / complement component C5a receptor activity / membrane attack complex / response to peptidoglycan / Activation of C3 and C5 / complement activation, GZMK pathway / negative regulation of macrophage chemotaxis / sensory perception of chemical stimulus / other organism cell membrane / 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 / G beta:gamma signalling through PI3Kgamma / G beta:gamma signalling through CDC42 / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / complement receptor mediated signaling pathway / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Ca2+ pathway / G alpha (z) signalling events / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / complement activation, alternative pathway / Adrenaline,noradrenaline inhibits insulin secretion / ADP signalling through P2Y purinoceptor 12 / G alpha (q) signalling events / chemokine activity / positive regulation of neutrophil chemotaxis / G alpha (i) signalling events / Thrombin signalling through proteinase activated receptors (PARs) / photoreceptor outer segment membrane / spectrin binding / endopeptidase inhibitor activity / alkylglycerophosphoethanolamine phosphodiesterase activity / positive regulation of macrophage chemotaxis / amyloid-beta clearance / complement activation, classical pathway / positive regulation of vascular endothelial growth factor production / photoreceptor outer segment / cellular defense response / adenylate cyclase inhibitor activity / positive regulation of chemokine production / positive regulation of protein localization to cell cortex / T cell migration / cardiac muscle cell apoptotic process / positive regulation of relaxation of smooth muscle / Adenylate cyclase inhibitory pathway / neutrophil chemotaxis / D2 dopamine receptor binding / photoreceptor inner segment / astrocyte activation / adenylate cyclase-inhibiting serotonin receptor signaling pathway / G protein-coupled serotonin receptor binding / cellular response to forskolin / Regulation of Complement cascade / secretory granule membrane / Peptide ligand-binding receptors / positive regulation of epithelial cell proliferation / regulation of mitotic spindle organization / chemokine-mediated signaling pathway / Regulation of insulin secretion / neuropeptide signaling pathway / response to prostaglandin E / microglial cell activation / positive regulation of cholesterol biosynthetic process / negative regulation of insulin secretion / G protein-coupled receptor binding / mRNA transcription by RNA polymerase II / response to peptide hormone / G protein-coupled receptor activity / cognition / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / centriolar satellite / chemotaxis / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / positive regulation of angiogenesis / apical part of cell / ADP signalling through P2Y purinoceptor 12 / GDP binding / Adrenaline,noradrenaline inhibits insulin secretion / G alpha (z) signalling events / ADORA2B mediated anti-inflammatory cytokines production / GPER1 signaling / heterotrimeric G-protein complex / G-protein beta-subunit binding / sensory perception of taste / adenylate cyclase-activating G protein-coupled receptor signaling pathway / sperm principal piece / signaling receptor complex adaptor activity / positive regulation of cytosolic calcium ion concentration / retina development in camera-type eye / cell body / GTPase binding / G protein activity
Similarity search - Function
: / Complement component 5, CUB domain / Anaphylatoxin chemotactic receptor, C3a/C5a1/C5a2 / Formyl peptide receptor-related / Complement C3/4/5, macroglobulin domain MG1 / Macroglobulin domain MG1 / Anaphylatoxin, complement system domain / Anaphylatoxin domain signature. / Anaphylatoxin, complement system / Anaphylatoxin/fibulin ...: / Complement component 5, CUB domain / Anaphylatoxin chemotactic receptor, C3a/C5a1/C5a2 / Formyl peptide receptor-related / Complement C3/4/5, macroglobulin domain MG1 / Macroglobulin domain MG1 / Anaphylatoxin, complement system domain / Anaphylatoxin domain signature. / Anaphylatoxin, complement system / Anaphylatoxin/fibulin / Anaphylotoxin-like domain / Anaphylatoxin domain profile. / Anaphylatoxin homologous domain / Netrin C-terminal Domain / Netrin module, non-TIMP type / UNC-6/NTR/C345C module / Macroglobulin domain MG4 / Macroglobulin domain MG4 / Alpha-macroglobulin, receptor-binding / Alpha-macroglobulin, receptor-binding domain superfamily / Macroglobulin domain MG3 / : / A-macroglobulin receptor binding domain / Macroglobulin domain MG3 / A-macroglobulin receptor / Netrin domain / NTR domain profile. / Alpha-2-macroglobulin / Macroglobulin domain / Tissue inhibitor of metalloproteinases-like, OB-fold / Alpha-2-macroglobulin, bait region domain / Alpha-macroglobulin-like, TED domain / Alpha-2-macroglobulin family / MG2 domain / A-macroglobulin TED domain / Alpha-2-macroglobulin bait region domain / Alpha-2-Macroglobulin / Alpha-2-macroglobulin family / Terpenoid cyclases/protein prenyltransferase alpha-alpha toroid / 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-protein alpha subunit / G-alpha domain profile. / 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. / 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 / Immunoglobulin-like fold / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
Guanine nucleotide-binding protein subunit gamma / Complement C5 / C5a anaphylatoxin chemotactic receptor 1 / Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Guanine nucleotide-binding protein G(i) subunit alpha-1
Similarity search - Component
Biological speciesHomo sapiens (human) / Rattus norvegicus (Norway rat) / Bos taurus (domestic cattle)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.0 Å
AuthorsWang Y / Liu W / Xu Y / Zhuang Y / Xu HE
Funding support China, 1 items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)81902085 China
CitationJournal: Nat Chem Biol / Year: 2023
Title: Revealing the signaling of complement receptors C3aR and C5aR1 by anaphylatoxins.
Authors: Yue Wang / Weiyi Liu / Youwei Xu / Xinheng He / Qingning Yuan / Ping Luo / Wenjia Fan / Jingpeng Zhu / Xinyue Zhang / Xi Cheng / Yi Jiang / H Eric Xu / Youwen Zhuang /
Abstract: The complement receptors C3aR and C5aR1, whose signaling is selectively activated by anaphylatoxins C3a and C5a, are important regulators of both innate and adaptive immune responses. Dysregulations ...The complement receptors C3aR and C5aR1, whose signaling is selectively activated by anaphylatoxins C3a and C5a, are important regulators of both innate and adaptive immune responses. Dysregulations of C3aR and C5aR1 signaling lead to multiple inflammatory disorders, including sepsis, asthma and acute respiratory distress syndrome. The mechanism underlying endogenous anaphylatoxin recognition and activation of C3aR and C5aR1 remains elusive. Here we reported the structures of C3a-bound C3aR and C5a-bound C5aR1 as well as an apo-C3aR structure. These structures, combined with mutagenesis analysis, reveal a conserved recognition pattern of anaphylatoxins to the complement receptors that is different from chemokine receptors, unique pocket topologies of C3aR and C5aR1 that mediate ligand selectivity, and a common mechanism of receptor activation. These results provide crucial insights into the molecular understanding of C3aR and C5aR1 signaling and structural templates for rational drug design for treating inflammation disorders.
History
DepositionNov 24, 2022-
Header (metadata) releaseMay 10, 2023-
Map releaseMay 10, 2023-
UpdateNov 20, 2024-
Current statusNov 20, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_34846.png

Downloads & links

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Map

FileDownload / File: emd_34846.map.gz / Format: CCP4 / Size: 59.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.82 Å/pix.
x 250 pix.
= 206. Å		0.82 Å/pix.
x 250 pix.
= 206. Å		0.82 Å/pix.
x 250 pix.
= 206. Å

Surface

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Images are generated by Spider.

Voxel sizeX=Y=Z: 0.824 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.22
Minimum - Maximum-0.020855376 - 1.9933122
Average (Standard dev.)0.0023104704 (±0.031960517)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions250250250
Spacing250250250
CellA=B=C: 206.0 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #1

Fileemd_34846_half_map_1.map
Projections & Slices
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Slices (1/2)
Density Histograms

Histogram

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Half map: #2

Fileemd_34846_half_map_2.map
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Sample components

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Entire : C5aR1-Gi-C5a protein complex

EntireName: C5aR1-Gi-C5a protein complex
Components
  • Complex: C5aR1-Gi-C5a protein complex
    • Protein or peptide: C5a anaphylatoxin chemotactic receptor 1
    • Protein or peptide: Complement C5
    • 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 subunit gamma
  • Ligand: PALMITIC ACID

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Supramolecule #1: C5aR1-Gi-C5a protein complex

SupramoleculeName: C5aR1-Gi-C5a protein complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 160 KDa

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Macromolecule #1: C5a anaphylatoxin chemotactic receptor 1

MacromoleculeName: C5a anaphylatoxin chemotactic receptor 1 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 39.372375 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MDSFNYTTPD YGHYDDKDTL DLNTPVDKTS NTLRVPDILA LVIFAVVFLV GVLGNALVVW VTAFEAKRTI NAIWFLNLAV ADFLSCLAL PILFTSIVQH HHWPFGGAAC SILPSLILLN MYASILLLAT ISADRFLLVF KPIWCQNFRG AGLAWIACAV A WGLALLLT ...String:
MDSFNYTTPD YGHYDDKDTL DLNTPVDKTS NTLRVPDILA LVIFAVVFLV GVLGNALVVW VTAFEAKRTI NAIWFLNLAV ADFLSCLAL PILFTSIVQH HHWPFGGAAC SILPSLILLN MYASILLLAT ISADRFLLVF KPIWCQNFRG AGLAWIACAV A WGLALLLT IPSFLYRVVR EEYFPPKVLC GVDYSHDKRR ERAVAIVRLV LGFLWPLLTL TICYTFILLR TWSRRATRST KT LKVVVAV VASFFIFWLP YQVTGIMMSF LEPSSPTFLL LKKLDSLCVS FAYINCCINP IIYVVAGQGF QGRLRKSLPS LLR NVLTEE SVVRESKSFT RSTVDTMAQK TQAV

UniProtKB: C5a anaphylatoxin chemotactic receptor 1

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Macromolecule #2: Complement C5

MacromoleculeName: Complement C5 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 8.288676 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString:
TLQKKIEEIA AKYKHSVVKK CCYDGACVNN DETCEQRAAR ISLGPRCIKA FTECCVVASQ LRANISHKDM QLGR

UniProtKB: Complement C5

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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 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 40.313863 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: GCTLSAEDKA AVERSKMIDR NLREDGEKAA REVKLLLLGA GESGKSTIVK QMKIIHEAGY SEEECKQYKA VVYSNTIQSI IAIIRAMGR LKIDFGDSAR ADDARQLFVL AGAAEEGFMT AELAGVIKRL WKDSGVQACF NRSREYQLND SAAYYLNDLD R IAQPNYIP ...String:
GCTLSAEDKA AVERSKMIDR NLREDGEKAA REVKLLLLGA GESGKSTIVK QMKIIHEAGY SEEECKQYKA VVYSNTIQSI IAIIRAMGR LKIDFGDSAR ADDARQLFVL AGAAEEGFMT AELAGVIKRL WKDSGVQACF NRSREYQLND SAAYYLNDLD R IAQPNYIP TQQDVLRTRV KTTGIVETHF TFKDLHFKMF DVGAQRSERK KWIHCFEGVT AIIFCVALSD YDLVLAEDEE MN RMHESMK LFDSICNNKW FTDTSIILFL NKKDLFEEKI KKSPLTICYP EYAGSNTYEE AAAYIQCQFE DLNKRKDTKE IYT HFTCST DTKNVQFVFD AVTDVIIKNN LKDCGLF

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: Rattus norvegicus (Norway rat)
Molecular weightTheoretical: 37.915496 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MGSLLQSELD QLRQEAEQLK NQIRDARKAC ADATLSQITN NIDPVGRIQM RTRRTLRGHL AKIYAMHWGT DSRLLVSASQ DGKLIIWDS YTTNKVHAIP LRSSWVMTCA YAPSGNYVAC GGLDNICSIY NLKTREGNVR VSRELAGHTG YLSCCRFLDD N QIVTSSGD ...String:
MGSLLQSELD QLRQEAEQLK NQIRDARKAC ADATLSQITN NIDPVGRIQM RTRRTLRGHL AKIYAMHWGT DSRLLVSASQ DGKLIIWDS YTTNKVHAIP LRSSWVMTCA YAPSGNYVAC GGLDNICSIY NLKTREGNVR VSRELAGHTG YLSCCRFLDD N QIVTSSGD TTCALWDIET GQQTTTFTGH TGDVMSLSLA PDTRLFVSGA CDASAKLWDV REGMCRQTFT GHESDINAIC FF PNGNAFA TGSDDATCRL FDLRADQELM TYSHDNIICG ITSVSFSKSG RLLLAGYDDF NCNVWDALKA DRAGVLAGHD NRV SCLGVT DDGMAVATGS WDSFLKIWN

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

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Macromolecule #5: Guanine nucleotide-binding protein subunit gamma

MacromoleculeName: Guanine nucleotide-binding protein subunit gamma / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Bos taurus (domestic cattle)
Molecular weightTheoretical: 7.432554 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString:
ASNNTASIAQ ARKLVEQLKM EANIDRIKVS KAAADLMAYC EAHAKEDPLL TPVPASENPF REKKFFC

UniProtKB: Guanine nucleotide-binding protein subunit gamma

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Macromolecule #6: PALMITIC ACID

MacromoleculeName: PALMITIC ACID / type: ligand / ID: 6 / Number of copies: 2 / Formula: PLM
Molecular weightTheoretical: 256.424 Da
Chemical component information

ChemComp-PLM:
PALMITIC ACID

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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

BufferpH: 7.2
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 5.0 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: 4236350
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

8efb

Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.0 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 406559
Initial angle assignmentType: ANGULAR RECONSTITUTION
Final angle assignmentType: ANGULAR RECONSTITUTION

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