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- EMDB-31480: Cryo-EM structure of human bradykinin receptor BK2R in complex Gq... -

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Basic information

Entry
Database: EMDB / ID: EMD-31480
TitleCryo-EM structure of human bradykinin receptor BK2R in complex Gq proteins and bradykinin
Map data
Sample
  • Complex: Bradykinin receptor BK2RR in complex with Gq proteins and bradykinin
    • Protein or peptide: Bradykinin receptor BK2R
    • Protein or peptide: Bradykinin
    • Protein or peptide: Guanine nucleotide-binding protein G(q) subunit alpha
    • 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
  • Ligand: CHOLESTEROL
Function / homology
Function and homology information


Fatty Acids bound to GPR40 (FFAR1) regulate insulin secretion / Acetylcholine regulates insulin secretion / PLC beta mediated events / entrainment of circadian clock / regulation of platelet activation / phototransduction, visible light / glutamate receptor signaling pathway / regulation of canonical Wnt signaling pathway / action potential / photoreceptor outer segment ...Fatty Acids bound to GPR40 (FFAR1) regulate insulin secretion / Acetylcholine regulates insulin secretion / PLC beta mediated events / entrainment of circadian clock / regulation of platelet activation / phototransduction, visible light / glutamate receptor signaling pathway / regulation of canonical Wnt signaling pathway / action potential / photoreceptor outer segment / activation of phospholipase C activity / Olfactory Signaling Pathway / Thromboxane signalling through TP receptor / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Activation of the phototransduction cascade / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G protein-coupled acetylcholine receptor signaling pathway / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Sensory perception of sweet, bitter, and umami (glutamate) taste / Glucagon signaling in metabolic regulation / ADP signalling through P2Y purinoceptor 12 / G beta:gamma signalling through BTK / Adrenaline,noradrenaline inhibits insulin secretion / Glucagon-type ligand receptors / G-protein beta/gamma-subunit complex binding / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / Vasopressin regulates renal water homeostasis via Aquaporins / photoreceptor disc membrane / G alpha (z) signalling events / GTPase activator activity / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / sensory perception of taste / cellular response to catecholamine stimulus / G beta:gamma signalling through PI3Kgamma / adenylate cyclase-activating dopamine receptor signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / ADP signalling through P2Y purinoceptor 1 / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / GPER1 signaling / heterotrimeric G-protein complex / Inactivation, recovery and regulation of the phototransduction cascade / adenylate cyclase-activating G protein-coupled receptor signaling pathway / G alpha (12/13) signalling events / signaling receptor complex adaptor activity / extracellular vesicle / ADORA2B mediated anti-inflammatory cytokines production / Thrombin signalling through proteinase activated receptors (PARs) / phospholipase C-activating G protein-coupled receptor signaling pathway / GTPase binding / Ca2+ pathway / G protein-coupled receptor binding / negative regulation of protein kinase activity / retina development in camera-type eye / G alpha (i) signalling events / fibroblast proliferation / G alpha (s) signalling events / G alpha (q) signalling events / blood coagulation / cell population proliferation / Ras protein signal transduction / Extra-nuclear estrogen signaling / nuclear membrane / lysosomal membrane / protein stabilization / G protein-coupled receptor signaling pathway / GTPase activity / synapse / GTP binding / protein-containing complex binding / Golgi apparatus / signal transduction / extracellular exosome / membrane / metal ion binding / plasma membrane / cytosol / cytoplasm
Similarity search - Function
G-protein alpha subunit, group Q / G-alpha domain profile. / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G protein alpha subunit / G-protein, gamma subunit / G-protein gamma subunit domain profile. / G-protein gamma-like domain superfamily / G-protein gamma-like domain ...G-protein alpha subunit, group Q / G-alpha domain profile. / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G protein alpha subunit / G-protein, gamma subunit / G-protein gamma subunit domain profile. / G-protein gamma-like domain superfamily / 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 beta WD-40 repeat / WD40 repeat, conserved site / Trp-Asp (WD) repeats circular profile. / Trp-Asp (WD) repeats signature. / WD domain, G-beta repeat / Trp-Asp (WD) repeats 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
Guanine nucleotide-binding protein G(q) subunit alpha / 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)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.9 Å
AuthorsShen J / Zhang D / Fu Y / Chen A / Zhang H
Funding support China, 6 items
OrganizationGrant numberCountry
Ministry of Science and Technology (MoST, China)2018YFA0508100 China
National Natural Science Foundation of China (NSFC)81722044 China
National Natural Science Foundation of China (NSFC)91753115 China
National Natural Science Foundation of China (NSFC)21778049 China
National Natural Science Foundation of China (NSFC)81861148018 China
Ministry of Science and Technology (MoST, China)2018ZX09711002 China
CitationJournal: Nat Commun / Year: 2022
Title: Cryo-EM structures of human bradykinin receptor-G proteins complexes.
Authors: Jinkang Shen / Dongqi Zhang / Yao Fu / Anqi Chen / Xiaoli Yang / Haitao Zhang /
Abstract: The type 2 bradykinin receptor (B2R) is a G protein-coupled receptor (GPCR) in the cardiovascular system, and the dysfunction of B2R leads to inflammation, hereditary angioedema, and pain. Bradykinin ...The type 2 bradykinin receptor (B2R) is a G protein-coupled receptor (GPCR) in the cardiovascular system, and the dysfunction of B2R leads to inflammation, hereditary angioedema, and pain. Bradykinin and kallidin are both endogenous peptide agonists of B2R, acting as vasodilators to protect the cardiovascular system. Here we determine two cryo-electron microscopy (cryo-EM) structures of human B2R-G in complex with bradykinin and kallidin at 3.0 Å and 2.9 Å resolution, respectively. The ligand-binding pocket accommodates S-shaped peptides, with aspartic acids and glutamates as an anion trap. The phenylalanines at the tail of the peptides induce significant conformational changes in the toggle switch W283, the conserved PIF, DRY, and NPxxY motifs, for the B2R activation. This further induces the extensive interactions of the intracellular loops ICL2/3 and helix 8 with G proteins. Our structures elucidate the molecular mechanisms for the ligand binding, receptor activation, and G proteins coupling of B2R.
History
DepositionJun 25, 2021-
Header (metadata) releaseJan 5, 2022-
Map releaseJan 5, 2022-
UpdateJan 18, 2023-
Current statusJan 18, 2023Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.025
  • Imaged by UCSF Chimera
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  • Surface view colored by height
  • Surface level: 0.025
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-7f6h
  • Surface level: 0.025
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

Downloads & links

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Map

FileDownload / File: emd_31480.map.gz / Format: CCP4 / Size: 52.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.01 Å/pix.
x 240 pix.
= 243.36 Å
1.01 Å/pix.
x 240 pix.
= 243.36 Å
1.01 Å/pix.
x 240 pix.
= 243.36 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.014 Å
Density
Contour LevelBy AUTHOR: 0.02 / Movie #1: 0.025
Minimum - Maximum-0.13970456 - 0.22859147
Average (Standard dev.)0.00010031058 (±0.004393657)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions240240240
Spacing240240240
CellA=B=C: 243.36002 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.0141.0141.014
M x/y/z240240240
origin x/y/z0.0000.0000.000
length x/y/z243.360243.360243.360
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ256256256
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS240240240
D min/max/mean-0.1400.2290.000

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Supplemental data

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Sample components

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Entire : Bradykinin receptor BK2RR in complex with Gq proteins and bradykinin

EntireName: Bradykinin receptor BK2RR in complex with Gq proteins and bradykinin
Components
  • Complex: Bradykinin receptor BK2RR in complex with Gq proteins and bradykinin
    • Protein or peptide: Bradykinin receptor BK2R
    • Protein or peptide: Bradykinin
    • Protein or peptide: Guanine nucleotide-binding protein G(q) subunit alpha
    • 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
  • Ligand: CHOLESTEROL

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Supramolecule #1: Bradykinin receptor BK2RR in complex with Gq proteins and bradykinin

SupramoleculeName: Bradykinin receptor BK2RR in complex with Gq proteins and bradykinin
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 173 KDa

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Macromolecule #1: Bradykinin receptor BK2R

MacromoleculeName: Bradykinin receptor BK2R / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 86.464734 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MKTIIALSYI FCLVFADYKD DDDKHHHHHH HHHHENLYFQ GKIEEGKLVI WINGDKGYNG LAEVGKKFEK DTGIKVTVEH PDKLEEKFP QVAATGDGPD IIFWAHDRFG GYAQSGLLAE ITPDKAFQDK LYPFTWDAVR YNGKLIAYPI AVEALSLIYN K DLLPNPPK ...String:
MKTIIALSYI FCLVFADYKD DDDKHHHHHH HHHHENLYFQ GKIEEGKLVI WINGDKGYNG LAEVGKKFEK DTGIKVTVEH PDKLEEKFP QVAATGDGPD IIFWAHDRFG GYAQSGLLAE ITPDKAFQDK LYPFTWDAVR YNGKLIAYPI AVEALSLIYN K DLLPNPPK TWEEIPALDK ELKAKGKSAL MFNLQEPYFT WPLIAADGGY AFKYAAGKYD IKDVGVDNAG AKAGLTFLVD LI KNKHMNA DTDYSIAEAA FNKGETAMTI NGPWAWSNID TSAVNYGVTV LPTFKGQPSK PFVGVLSAGI NAASPNKELA KEF LENYLL TDEGLEAVNK DKPLGAVALK SYEEELAKDP RIAATMENAQ KGEIMPNIPQ MSAFWYAVRT AVINAASGRQ TVDE ALKDA QTLNVTLQGP TLNGTFAQSK CPQVEWLGWL NTIQPPFLWV LFVLATLENI FVLSVFCLHK SSCTVAEIYL GNLAA ADLI LACGLPFWAI TISNNFDWLF GETLCRVVNA IISMNLYSSI CFLMLVSIDR YLALVKTMSM GRMRGVRWAK LYSLVI WGC TLLLSSPMLV FRTMKEYSDE GHNVTACVIS YPSLIWEVFT NMLLNVVGFL LPLSVITFCT MQIMQVLRNN EMQKFKE IQ TERRATVLVL VVLLLFIICW LPFQISTFLD TLHRLGILSS CQDERIIDVI TQIASFMAYS NSCLNPLVYV IVGKRFRK K SWEVYQGVCQ KGGCRSEPIQ MENSMGTLRT SISVERQIHK LQDWAGSRQ

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Macromolecule #2: Bradykinin

MacromoleculeName: Bradykinin / type: protein_or_peptide / ID: 2
Details: This peptide is the ligand of the protein bradykinin receptor B2R
Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 1.062224 KDa
SequenceString:
RPPGFSPFR

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

MacromoleculeName: Guanine nucleotide-binding protein G(q) subunit alpha / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 43.534449 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MHHHHHHHHH HTLESIMACC LSEEAKEARR INDEIERQLR RDKRDARREL KLLLLGTGES GKSTFIKQMR IIHGSGYSDE DKRGFTKLV YQNIFTAMQA MIRAMDTLKI PYKYEHNKAH AQLVREVDVE KVSAFENPYV DAIKSLWNDP GIQECYDRRR E YQLSDSTK ...String:
MHHHHHHHHH HTLESIMACC LSEEAKEARR INDEIERQLR RDKRDARREL KLLLLGTGES GKSTFIKQMR IIHGSGYSDE DKRGFTKLV YQNIFTAMQA MIRAMDTLKI PYKYEHNKAH AQLVREVDVE KVSAFENPYV DAIKSLWNDP GIQECYDRRR E YQLSDSTK YYLNDLDRVA DPAYLPTQQD VLRVQVPTTG IIEYPFDLQS VIFRMVDVGG LRSERRKWIH CFENVTSIMF LV ALSEYDQ VLVESDNENR MEESKALFRT IITYPWFQNS SVILFLNKKD LLEEKIMYSH LVDYFPEYDG PQRDAQAARE FIL KMFVDL NPDSDKIIYS HFTCATDTEN IRFVFAAVKD TILQLNLKEY NLV

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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: 39.086641 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MHHHHHHHHH HGSSGSELDQ LRQEAEQLKN QIRDARKACA DATLSQITNN IDPVGRIQMR TRRTLRGHLA KIYAMHWGTD SRLLVSASQ DGKLIIWDSY TTNKVHAIPL RSSWVMTCAY APSGNYVACG GLDNICSIYN LKTREGNVRV SRELAGHTGY L SCCRFLDD ...String:
MHHHHHHHHH HGSSGSELDQ LRQEAEQLKN QIRDARKACA DATLSQITNN IDPVGRIQMR TRRTLRGHLA KIYAMHWGTD SRLLVSASQ DGKLIIWDSY TTNKVHAIPL RSSWVMTCAY APSGNYVACG GLDNICSIYN LKTREGNVRV SRELAGHTGY L SCCRFLDD NQIVTSSGDT TCALWDIETG QQTTTFTGHT GDVMSLSLAP DTRLFVSGAC DASAKLWDVR EGMCRQTFTG HE SDINAIC FFPNGNAFAT GSDDATCRLF DLRADQELMT YSHDNIICGI TSVSFSKSGR LLLAGYDDFN CNVWDALKAD RAG VLAGHD NRVSCLGVTD DGMAVATGSW DSFLKIWN

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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: 9.242612 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString:
MHHHHHHHHH HASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L

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Macromolecule #6: CHOLESTEROL

MacromoleculeName: CHOLESTEROL / type: ligand / ID: 6 / Number of copies: 2 / Formula: CLR
Molecular weightTheoretical: 386.654 Da
Chemical component information

ChemComp-CLR:
CHOLESTEROL / Cholesterol

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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: 7.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: OTHER / Imaging mode: BRIGHT FIELDBright-field microscopy
Image recordingFilm or detector model: GATAN K2 BASE (4k x 4k) / Average electron dose: 64.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Initial angle assignmentType: OTHER
Final angle assignmentType: OTHER
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.9 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 3960198

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