+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-42476 | |||||||||
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Title | PLCb3-Gbg-Gaq complex on membranes | |||||||||
Map data | ||||||||||
Sample |
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Keywords | PLCb3 / Gbg / Gaq / SIGNALING PROTEIN | |||||||||
Function / homology | Function and homology information phosphoinositide phospholipase C / Fatty Acids bound to GPR40 (FFAR1) regulate insulin secretion / Acetylcholine regulates insulin secretion / phosphatidylinositol metabolic process / PLC beta mediated events / phospholipase C-activating dopamine receptor signaling pathway / entrainment of circadian clock / regulation of systemic arterial blood pressure / regulation of platelet activation / phospholipase C activity ...phosphoinositide phospholipase C / Fatty Acids bound to GPR40 (FFAR1) regulate insulin secretion / Acetylcholine regulates insulin secretion / phosphatidylinositol metabolic process / PLC beta mediated events / phospholipase C-activating dopamine receptor signaling pathway / entrainment of circadian clock / regulation of systemic arterial blood pressure / regulation of platelet activation / phospholipase C activity / phototransduction, visible light / phosphatidylinositol phospholipase C activity / regulation of canonical Wnt signaling pathway / glutamate receptor signaling pathway / postsynaptic cytosol / action potential / Synthesis of IP3 and IP4 in the cytosol / phosphatidylinositol-mediated signaling / photoreceptor outer segment / lipid catabolic process / release of sequestered calcium ion into cytosol / GTPase activator activity / molecular function activator activity / G protein-coupled receptor binding / negative regulation of protein kinase activity / G-protein beta/gamma-subunit complex binding / Olfactory Signaling Pathway / Activation of the phototransduction cascade / adenylate cyclase-activating G protein-coupled receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / 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 / Prostacyclin signalling through prostacyclin receptor / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / photoreceptor disc membrane / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / sensory perception of taste / ADP signalling through P2Y purinoceptor 1 / 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 / cellular response to prostaglandin E stimulus / blood coagulation / 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 / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / retina development in camera-type eye / Ca2+ pathway / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (i) signalling events / G alpha (s) signalling events / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / G alpha (q) signalling events / nuclear membrane / Ras protein signal transduction / cell population proliferation / Extra-nuclear estrogen signaling / molecular adaptor activity / calmodulin binding / protein stabilization / cadherin binding / G protein-coupled receptor signaling pathway / lysosomal membrane / GTPase activity / calcium ion binding / synapse / protein-containing complex binding / GTP binding / Golgi apparatus / signal transduction / protein-containing complex / extracellular exosome / membrane / nucleus / metal ion binding / plasma membrane / cytosol / cytoplasm Similarity search - Function | |||||||||
Biological species | Homo sapiens (human) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.37 Å | |||||||||
Authors | Falzone ME / MacKinnon R | |||||||||
Funding support | United States, 2 items
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Citation | Journal: Proc Natl Acad Sci U S A / Year: 2023 Title: The mechanism of regulation of -catalyzed hydrolysis. Authors: Maria E Falzone / Roderick MacKinnon / Abstract: () enzymes cleave phosphatidylinositol 4,5-bisphosphate ( producing and (diacylglycerol). modulates the function of many ion channels, while and regulate intracellular Ca levels and protein ... () enzymes cleave phosphatidylinositol 4,5-bisphosphate ( producing and (diacylglycerol). modulates the function of many ion channels, while and regulate intracellular Ca levels and protein phosphorylation by protein kinase C, respectively. enzymes are under the control of G protein coupled receptor signaling through direct interactions with G proteins and and have been shown to be coincidence detectors for dual stimulation of and -coupled receptors. are aqueous-soluble cytoplasmic enzymes but partition onto the membrane surface to access their lipid substrate, complicating their functional and structural characterization. Using newly developed methods, we recently showed that activates by recruiting it to the membrane. Using these same methods, here we show that increases the catalytic rate constant, , of . Since stimulation of by depends on an autoinhibitory element (the X-Y linker), we propose that produces partial relief of the X-Y linker autoinhibition through an allosteric mechanism. We also determined membrane-bound structures of the and complexes, which show that these G proteins can bind simultaneously and independently of each other to regulate activity. The structures rationalize a finding in the enzyme assay, that costimulation by both G proteins follows a product rule of each independent stimulus. We conclude that baseline activity of is strongly suppressed, but the effect of G proteins, especially acting together, provides a robust stimulus upon G protein stimulation. | |||||||||
History |
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-Structure visualization
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_42476.map.gz | 146.5 MB | EMDB map data format | |
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Header (meta data) | emd-42476-v30.xml emd-42476.xml | 21.9 KB 21.9 KB | Display Display | EMDB header |
Images | emd_42476.png | 59 KB | ||
Filedesc metadata | emd-42476.cif.gz | 7.1 KB | ||
Others | emd_42476_additional_1.map.gz emd_42476_half_map_1.map.gz emd_42476_half_map_2.map.gz | 77 MB 144 MB 144 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-42476 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-42476 | HTTPS FTP |
-Validation report
Summary document | emd_42476_validation.pdf.gz | 1.1 MB | Display | EMDB validaton report |
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Full document | emd_42476_full_validation.pdf.gz | 1.1 MB | Display | |
Data in XML | emd_42476_validation.xml.gz | 14.5 KB | Display | |
Data in CIF | emd_42476_validation.cif.gz | 17.2 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-42476 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-42476 | HTTPS FTP |
-Related structure data
Related structure data | 8uqoMC 8uqnC C: citing same article (ref.) M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_42476.map.gz / Format: CCP4 / Size: 155.3 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.839 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Additional map: #1
File | emd_42476_additional_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #2
File | emd_42476_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #1
File | emd_42476_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Sample components
+Entire : PLCb3-Gbg-Gaq complex
+Supramolecule #1: PLCb3-Gbg-Gaq complex
+Macromolecule #1: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
+Macromolecule #2: Guanine nucleotide-binding protein subunit gamma
+Macromolecule #3: Guanine nucleotide-binding protein G(q) subunit alpha
+Macromolecule #4: 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-3
+Macromolecule #5: GUANOSINE-5'-DIPHOSPHATE
+Macromolecule #6: TETRAFLUOROALUMINATE ION
+Macromolecule #7: MAGNESIUM ION
+Macromolecule #8: CALCIUM ION
+Macromolecule #9: water
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.4 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | TFS KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 60.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.5 µm |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Startup model | Type of model: NONE |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.37 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 359215 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |