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- EMDB-31389: Cryo-EM structure of an activated Cholecystokinin A receptor (CCK... -

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Entry
Database: EMDB / ID: EMD-31389
TitleCryo-EM structure of an activated Cholecystokinin A receptor (CCKAR)-Gq complex
Map data
Sample
  • Complex: Cryo-EM structure of an activated Cholecystokinin A receptor (CCKAR)-Gq complex
    • Protein or peptide: fusion protein of Guanine nucleotide-binding protein G(i) subunit alpha-1 and Guanine nucleotide-binding protein G(q) subunit alpha-q
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
    • Protein or peptide: Cholecystokinin receptor type A
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
    • Protein or peptide: scFv16
    • Protein or peptide: Cholecystokinin-8
KeywordsCholecystokinin A receptor / Gq complex / CCK-8 / MEMBRANE PROTEIN
Function / homology
Function and homology information


cholecystokinin receptor activity / cholecystokinin signaling pathway / regulation of hormone secretion / Fatty Acids bound to GPR40 (FFAR1) regulate insulin secretion / Acetylcholine regulates insulin secretion / phospholipase C-activating G protein-coupled glutamate receptor signaling pathway / PLC beta mediated events / phospholipase C-activating serotonin receptor signaling pathway / regulation of platelet activation / entrainment of circadian clock ...cholecystokinin receptor activity / cholecystokinin signaling pathway / regulation of hormone secretion / Fatty Acids bound to GPR40 (FFAR1) regulate insulin secretion / Acetylcholine regulates insulin secretion / phospholipase C-activating G protein-coupled glutamate receptor signaling pathway / PLC beta mediated events / phospholipase C-activating serotonin receptor signaling pathway / regulation of platelet activation / entrainment of circadian clock / regulation of canonical Wnt signaling pathway / glutamate receptor signaling pathway / forebrain development / peptide hormone binding / phototransduction, visible light / photoreceptor outer segment / neuropeptide signaling pathway / postsynaptic cytosol / cellular response to hormone stimulus / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / enzyme regulator activity / T cell migration / Adenylate cyclase inhibitory pathway / D2 dopamine receptor binding / response to prostaglandin E / G protein-coupled serotonin receptor binding / adenylate cyclase regulator activity / adenylate cyclase-inhibiting serotonin receptor signaling pathway / axonogenesis / cellular response to forskolin / GTPase activator activity / Peptide ligand-binding receptors / Turbulent (oscillatory, disturbed) flow shear stress activates signaling by PIEZO1 and integrins in endothelial cells / regulation of mitotic spindle organization / Regulation of insulin secretion / positive regulation of cholesterol biosynthetic process / negative regulation of insulin secretion / G protein-coupled receptor binding / response to peptide hormone / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / centriolar satellite / G-protein beta/gamma-subunit complex binding / neuron migration / Olfactory Signaling Pathway / adenylate cyclase-activating G protein-coupled receptor 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 / blood coagulation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / G beta:gamma signalling through CDC42 / Prostacyclin signalling through prostacyclin receptor / 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 / GDP binding / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / ADP signalling through P2Y purinoceptor 1 / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / 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 / GPER1 signaling / G-protein beta-subunit binding / cellular response to prostaglandin E stimulus / heterotrimeric G-protein complex / Inactivation, recovery and regulation of the phototransduction cascade / G alpha (12/13) signalling events / extracellular vesicle / sensory perception of taste / Thrombin signalling through proteinase activated receptors (PARs) / signaling receptor complex adaptor activity / G protein activity / retina development in camera-type eye / GTPase binding / Ca2+ pathway / fibroblast proliferation / midbody / cell cortex / nuclear membrane / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / G alpha (i) signalling events / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (q) signalling events / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement
Similarity search - Function
Cholecystokinin receptor type A / Cholecystokinin A receptor, N-terminal / Cholecystokinin A receptor, N-terminal domain superfamily / Cholecystokinin A receptor, N-terminal / Cholecystokinin receptor / G-protein alpha subunit, group Q / 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 ...Cholecystokinin receptor type A / Cholecystokinin A receptor, N-terminal / Cholecystokinin A receptor, N-terminal domain superfamily / Cholecystokinin A receptor, N-terminal / Cholecystokinin receptor / G-protein alpha subunit, group Q / 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. / 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 / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
Cholecystokinin receptor type A / 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 / Guanine nucleotide-binding protein G(i) subunit alpha-1
Similarity search - Component
Biological speciesHomo sapiens (human) / synthetic construct (others)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.9 Å
AuthorsLiu QF / Yang DH
CitationJournal: Nat.Chem.Biol. / Year: 2021
Title: Ligand recognition and G-protein coupling selectivity of cholecystokinin A receptor
Authors: Liu Q / Yang D / Zhuang Y / Croll TI / Cai X / Dai A / He X / Duan J / Yin W / Ye C / Zhou F / Wu B / Zhao Q / Xu HE / Wang MW / Jiang Y
History
DepositionJun 1, 2021-
Header (metadata) releaseAug 25, 2021-
Map releaseAug 25, 2021-
UpdateNov 20, 2024-
Current statusNov 20, 2024Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.08
  • Imaged by UCSF Chimera
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  • Surface view colored by height
  • Surface level: 0.08
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-7ezm
  • Surface level: 0.08
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_31389.png

Downloads & links

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Map

FileDownload / File: emd_31389.map.gz / Format: CCP4 / Size: 30.5 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.05 Å/pix.
x 200 pix.
= 209. Å		1.05 Å/pix.
x 200 pix.
= 209. Å		1.05 Å/pix.
x 200 pix.
= 209. Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.045 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.08 / Movie #1: 0.08
Minimum - Maximum-0.021422734 - 1.6690415
Average (Standard dev.)0.002027777 (±0.03219979)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions200200200
Spacing200200200
CellA=B=C: 208.99998 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.0451.0451.045
M x/y/z200200200
origin x/y/z0.0000.0000.000
length x/y/z209.000209.000209.000
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ384384384
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS200200200
D min/max/mean-0.0211.6690.002

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Supplemental data

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Sample components

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Entire : Cryo-EM structure of an activated Cholecystokinin A receptor (CCK...

EntireName: Cryo-EM structure of an activated Cholecystokinin A receptor (CCKAR)-Gq complex
Components
  • Complex: Cryo-EM structure of an activated Cholecystokinin A receptor (CCKAR)-Gq complex
    • Protein or peptide: fusion protein of Guanine nucleotide-binding protein G(i) subunit alpha-1 and Guanine nucleotide-binding protein G(q) subunit alpha-q
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
    • Protein or peptide: Cholecystokinin receptor type A
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
    • Protein or peptide: scFv16
    • Protein or peptide: Cholecystokinin-8

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Supramolecule #1: Cryo-EM structure of an activated Cholecystokinin A receptor (CCK...

SupramoleculeName: Cryo-EM structure of an activated Cholecystokinin A receptor (CCKAR)-Gq complex
type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: fusion protein of Guanine nucleotide-binding protein G(i) subunit...

MacromoleculeName: fusion protein of Guanine nucleotide-binding protein G(i) subunit alpha-1 and Guanine nucleotide-binding protein G(q) subunit alpha-q
type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 41.26891 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MGCTLSAEDK AAVERSKMID RNLREDGEKA RRELKLLLLG TGESGKSTFI KQMRIIHGSG YSDEDKRGFT KLVYQNIFTA MQAMIRAMD TLKIPYKYEH NKAHAQLVRE VDVEKVSAFE NPYVDAIKSL WNDPGIQECY DRRREYQLSD STKYYLNDLD R VADPAYLP ...String:
MGCTLSAEDK AAVERSKMID RNLREDGEKA RRELKLLLLG TGESGKSTFI KQMRIIHGSG YSDEDKRGFT KLVYQNIFTA MQAMIRAMD TLKIPYKYEH NKAHAQLVRE VDVEKVSAFE NPYVDAIKSL WNDPGIQECY DRRREYQLSD STKYYLNDLD R VADPAYLP TQQDVLRVRV PTTGIIEYPF DLQSVIFRMV DVGAQRSERR KWIHCFENVT SIMFLVALSE YDQVLVESDN EN RMEESKA LFRTIITYPW FQNSSVILFL NKKDLLEEKI MYSHLVDYFP EYDGPQRDAQ AAREFILKMF VDLNPDSDKI IYS HFTCST DTENIRFVFA AVKDTILQLN LKEYNLV

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

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Macromolecule #2: 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: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 38.744371 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MHHHHHHGSL LQSELDQLRQ EAEQLKNQIR DARKACADAT LSQITNNIDP VGRIQMRTRR TLRGHLAKIY AMHWGTDSRL LVSASQDGK LIIWDSYTTN KVHAIPLRSS WVMTCAYAPS GNYVACGGLD NICSIYNLKT REGNVRVSRE LAGHTGYLSC C RFLDDNQI ...String:
MHHHHHHGSL LQSELDQLRQ EAEQLKNQIR DARKACADAT LSQITNNIDP VGRIQMRTRR TLRGHLAKIY AMHWGTDSRL LVSASQDGK LIIWDSYTTN KVHAIPLRSS WVMTCAYAPS GNYVACGGLD NICSIYNLKT REGNVRVSRE LAGHTGYLSC C RFLDDNQI VTSSGDTTCA LWDIETGQQT TTFTGHTGDV MSLSLAPDTR LFVSGACDAS AKLWDVREGM CRQTFTGHES DI NAICFFP NGNAFATGSD DATCRLFDLR ADQELMTYSH DNIICGITSV SFSKSGRLLL AGYDDFNCNV WDALKADRAG VLA GHDNRV SCLGVTDDGM AVATGSWDSF LKIWN

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

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Macromolecule #3: Cholecystokinin receptor type A

MacromoleculeName: Cholecystokinin receptor type A / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 47.886062 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MDVVDSLLVN GSNITPPCEL GLENETLFCL DQPRPSKEWQ PAVQILLYSL IFLLSVLGNT LVITVLIRNK RMRTVTNIFL LSLAVSDLM LCLFCMPFNL IPNLLKDFIF GSAVCKTTTY FMGTSVSVST FNLVAISLER YGAICKPLQS RVWQTKSHAL K VIAATWCL ...String:
MDVVDSLLVN GSNITPPCEL GLENETLFCL DQPRPSKEWQ PAVQILLYSL IFLLSVLGNT LVITVLIRNK RMRTVTNIFL LSLAVSDLM LCLFCMPFNL IPNLLKDFIF GSAVCKTTTY FMGTSVSVST FNLVAISLER YGAICKPLQS RVWQTKSHAL K VIAATWCL SFTIMTPYPI YSNLVPFTKN NNQTANMCRF LLPNDVMQQS WHTFLLLILF LIPGIVMMVA YGLISLELYQ GI KFEASQK KSAKERKPST TSSGKYEDSD GCYLQKTRPP RKLELRQLST GSSSRANRIR SNSSAANLMA KKRVIRMLIV IVV LFFLCW MPIFSANAWR AYDTASAERR LSGTPISFIL LLSYTSSCVN PIIYCFMNKR FRLGFMATFP CCPNPGPPGA RGEV GEEEE GGTTGASLSR FSYSHMSASV PPQ

UniProtKB: Cholecystokinin receptor type A

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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: 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 #5: scFv16

MacromoleculeName: scFv16 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 26.277299 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: VQLVESGGGL VQPGGSRKLS CSASGFAFSS FGMHWVRQAP EKGLEWVAYI SSGSGTIYYA DTVKGRFTIS RDDPKNTLFL QMTSLRSED TAMYYCVRSI YYYGSSPFDF WGQGTTLTVS AGGGGSGGGG SGGGGSADIV MTQATSSVPV TPGESVSISC R SSKSLLHS ...String:
VQLVESGGGL VQPGGSRKLS CSASGFAFSS FGMHWVRQAP EKGLEWVAYI SSGSGTIYYA DTVKGRFTIS RDDPKNTLFL QMTSLRSED TAMYYCVRSI YYYGSSPFDF WGQGTTLTVS AGGGGSGGGG SGGGGSADIV MTQATSSVPV TPGESVSISC R SSKSLLHS NGNTYLYWFL QRPGQSPQLL IYRMSNLASG VPDRFSGSGS GTAFTLTISR LEAEDVGVYY CMQHLEYPLT FG AGTKLEL

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Macromolecule #6: Cholecystokinin-8

MacromoleculeName: Cholecystokinin-8 / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 1.291428 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString:
D(TYS)MGWMDFF

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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: 7.4
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 80.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: OTHER / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

6oij

Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.9 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 555628
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: OTHER

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