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- PDB-9b13: Cryo-EM structure of phospholipase Cepsilon PH-COOH in complex wi... -

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Basic information

Entry
Database: PDB / ID: 9b13
TitleCryo-EM structure of phospholipase Cepsilon PH-COOH in complex with an antigen-binding fragment (composite structure)
Components
  • 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase epsilon-1
  • Antigen-binding fragment heavy chain
  • Antigen-binding fragment light chain
KeywordsMEMBRANE PROTEIN / phospholipase c / antigen-binding fragment / complex
Function / homology
Function and homology information


diacylglycerol biosynthetic process / Synthesis of IP3 and IP4 in the cytosol / phosphoinositide phospholipase C / phosphatidylinositol metabolic process / phospholipase C activity / phosphatidylinositol-4,5-bisphosphate phospholipase C activity / glomerulus development / phosphatidylinositol-mediated signaling / lipid catabolic process / positive regulation of lamellipodium assembly ...diacylglycerol biosynthetic process / Synthesis of IP3 and IP4 in the cytosol / phosphoinositide phospholipase C / phosphatidylinositol metabolic process / phospholipase C activity / phosphatidylinositol-4,5-bisphosphate phospholipase C activity / glomerulus development / phosphatidylinositol-mediated signaling / lipid catabolic process / positive regulation of lamellipodium assembly / release of sequestered calcium ion into cytosol / guanyl-nucleotide exchange factor activity / small GTPase binding / epidermal growth factor receptor signaling pathway / lamellipodium / phospholipase C-activating G protein-coupled receptor signaling pathway / Ras protein signal transduction / intracellular signal transduction / G protein-coupled receptor signaling pathway / Golgi membrane / enzyme binding / metal ion binding / plasma membrane / cytosol
Similarity search - Function
1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase epsilon-1 / : / : / Phosphoinositide phospholipase C family / Phospholipase C, phosphatidylinositol-specific, Y domain / Phosphatidylinositol-specific phospholipase C, Y domain / Phosphatidylinositol-specific phospholipase Y-box domain profile. / Phospholipase C, catalytic domain (part); domain Y / Ras association (RalGDS/AF-6) domain / Ras association (RalGDS/AF-6) domain ...1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase epsilon-1 / : / : / Phosphoinositide phospholipase C family / Phospholipase C, phosphatidylinositol-specific, Y domain / Phosphatidylinositol-specific phospholipase C, Y domain / Phosphatidylinositol-specific phospholipase Y-box domain profile. / Phospholipase C, catalytic domain (part); domain Y / Ras association (RalGDS/AF-6) domain / Ras association (RalGDS/AF-6) domain / Phosphatidylinositol-specific phospholipase C, X domain / Phosphatidylinositol-specific phospholipase C, X domain / Phospholipase C, catalytic domain (part); domain X / Phosphatidylinositol-specific phospholipase X-box domain profile. / Ras-associating (RA) domain profile. / Ras-associating (RA) domain / Ras guanine nucleotide exchange factor domain superfamily / Ras guanine-nucleotide exchange factor, catalytic domain superfamily / RasGEF domain / Ras guanine-nucleotide exchange factors catalytic domain profile. / Guanine nucleotide exchange factor for Ras-like small GTPases / Ras guanine-nucleotide exchange factors catalytic domain / PLC-like phosphodiesterase, TIM beta/alpha-barrel domain superfamily / Protein kinase C conserved region 2 (CalB) / C2 domain / C2 domain / C2 domain profile. / C2 domain superfamily / EF-hand domain pair / Ubiquitin-like domain superfamily
Similarity search - Domain/homology
1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase epsilon-1
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat)
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.9 Å
AuthorsSamassekou, K. / Lyon, A.M.
Funding support United States, 2items
OrganizationGrant numberCountry
National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI)1R01HL141076-01 United States
American Heart Association23PRE1011279 United States
CitationJournal: To Be Published
Title: Cryo-EM Structure of Phospholipase Ce Reveals Roles for the N-terminal Domains in Maximum Activity
Authors: Samassekou, K. / Lyon, A.M.
History
DepositionMar 12, 2024Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 26, 2025Provider: repository / Type: Initial release
Revision 1.0Mar 26, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Mar 26, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Mar 26, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Mar 26, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Mar 26, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase epsilon-1
H: Antigen-binding fragment heavy chain
L: Antigen-binding fragment light chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)219,3844
Polymers219,3433
Non-polymers401
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase epsilon-1 / Phosphoinositide phospholipase C-epsilon-1 / Phospholipase C-epsilon-1 / PLC-epsilon-1


Mass: 165314.125 Da / Num. of mol.: 1 / Fragment: PH-C terminus, residues 837-2281
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Gene: Plce1, Plce / Plasmid: pFastBacHTA / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: Q99P84, phosphoinositide phospholipase C
#2: Antibody Antigen-binding fragment heavy chain


Mass: 28234.482 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Escherichia coli BL21 (bacteria)
#3: Antibody Antigen-binding fragment light chain


Mass: 25794.859 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Escherichia coli BL21 (bacteria)
#4: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Ca / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

Component
IDNameTypeDetailsEntity IDParent-IDSource
1Fab2-rPLCe PH-CCOMPLEXfragment of phospholipase C epsilon (residues 837-2281) in complex with an antigen binding fragment (Fab2)#1-#30MULTIPLE SOURCES
2rPLCe PH-CCOMPLEX#11RECOMBINANT
3Fab2COMPLEX#2-#31RECOMBINANT
Molecular weight
IDEntity assembly-IDValue (°)Experimental value
110.214 MDaNO
210.165 MDaNO
310.489 MDaNO
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
12Rattus norvegicus (Norway rat)10116
23Homo sapiens (human)9606
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-IDStrainPlasmid
12Spodoptera frugiperda (fall armyworm)7108pFastBacHTA
23Escherichia coli (E. coli)562BL21pRH 2.2
Buffer solutionpH: 8
Buffer component
IDConc.NameFormulaBuffer-ID
120 mM4-(2-hydroxyethyl)-1-piperazineethanesulfonic acidHEPES1
2150 mMsodium chlorideNaCl1
30.3 mMtris(2-carboxyethyl)phosphineTCEP1
40.1 mMEthylenediaminetetraacetic acidEDTA1
50.1 mMegtazic acidEGTA1
60.005 %n-dodecyl-b-D-maltosideDDM1
SpecimenConc.: 0.6 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 81000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 700 nm / Cs: 2.7 mm
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 3.2 sec. / Electron dose: 53.75 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 7052

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 1471782
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 147120 / Symmetry type: POINT

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