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- PDB-9l0i: Cryo-EM structure of human lipid phosphate phosphatase 1 -

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Basic information

Entry
Database: PDB / ID: 9l0i
TitleCryo-EM structure of human lipid phosphate phosphatase 1
ComponentsPhospholipid phosphatase 1
KeywordsMEMBRANE PROTEIN / phosphatase
Function / homology
Function and homology information


2-lysophosphatidate phosphatase / sphingosine-1-phosphate phosphatase activity / ceramide-1-phosphate phosphatase activity / diacylglycerol diphosphate phosphatase / diacylglycerol diphosphate phosphatase activity / phosphatidate phosphatase / Sphingolipid catabolism / phosphatidate phosphatase activity / sphingosine metabolic process / ceramide metabolic process ...2-lysophosphatidate phosphatase / sphingosine-1-phosphate phosphatase activity / ceramide-1-phosphate phosphatase activity / diacylglycerol diphosphate phosphatase / diacylglycerol diphosphate phosphatase activity / phosphatidate phosphatase / Sphingolipid catabolism / phosphatidate phosphatase activity / sphingosine metabolic process / ceramide metabolic process / phospholipid dephosphorylation / lipid phosphatase activity / lysophosphatidic acid phosphatase activity / Hydrolases; Acting on ester bonds; Phosphoric-monoester hydrolases / sphingolipid catabolic process / androgen receptor signaling pathway / regulation of lipid metabolic process / nuclear receptor-mediated steroid hormone signaling pathway / phospholipid metabolic process / caveola / phospholipase C-activating G protein-coupled receptor signaling pathway / apical plasma membrane / membrane raft / negative regulation of cell population proliferation / signal transduction / extracellular exosome / membrane / plasma membrane
Similarity search - Function
Phosphatidate (PA) phosphatase-related / Acid phosphatase homologues / Phosphatidic acid phosphatase type 2/haloperoxidase / PAP2 superfamily / Phosphatidic acid phosphatase type 2/haloperoxidase superfamily
Similarity search - Domain/homology
1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine / Chem-LPP / Chem-PT5 / Phospholipid phosphatase 1
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.61 Å
AuthorsYang, M. / Qian, H.W.
Funding support China, 1items
OrganizationGrant numberCountry
Chinese Academy of Sciences China
CitationJournal: To Be Published
Title: Cryo-EM structure of human lipid phosphate phosphatase 1
Authors: Yang, M. / Qian, H.W.
History
DepositionDec 12, 2024Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Dec 17, 2025Provider: repository / Type: Initial release
Revision 1.0Dec 17, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Dec 17, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Dec 17, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Dec 17, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Dec 17, 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

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Assembly

Deposited unit
A: Phospholipid phosphatase 1
B: Phospholipid phosphatase 1
C: Phospholipid phosphatase 1
D: Phospholipid phosphatase 1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)139,48120
Polymers128,7724
Non-polymers10,70916
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
Phospholipid phosphatase 1 / Lipid phosphate phosphohydrolase 1 / PAP2-alpha / Phosphatidate phosphohydrolase type 2a / ...Lipid phosphate phosphohydrolase 1 / PAP2-alpha / Phosphatidate phosphohydrolase type 2a / Phosphatidic acid phosphatase 2a / PAP-2a / PAP2a


Mass: 32193.031 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PLPP1, LPP1, PPAP2A / Cell line (production host): HEK 293F / Production host: Homo sapiens (human)
References: UniProt: O14494, Hydrolases; Acting on ester bonds; Phosphoric-monoester hydrolases, 2-lysophosphatidate phosphatase, phosphatidate phosphatase, diacylglycerol diphosphate phosphatase
#2: Chemical
ChemComp-LPP / 2-(HEXADECANOYLOXY)-1-[(PHOSPHONOOXY)METHYL]ETHYL HEXADECANOATE / 1,2-DIPALMITOYL-SN-GLYCERO-3-PHOSPHATE / L-B,G-DIPALMITOYL-A-PHOSPHATIDIC ACID DISODIUM SALT / 3-SN-PHOSPHATIDIC ACID / 1,2-DIPALMITOYLDISODIUM SALT


Mass: 648.891 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C35H69O8P / Feature type: SUBJECT OF INVESTIGATION / Comment: phospholipid*YM
#3: Sugar
ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C8H15NO6 / Feature type: SUBJECT OF INVESTIGATION
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0
#4: Chemical
ChemComp-LBN / 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine / (2R)-2-[(9Z)-9-Octadecenoyloxy]-3-(palmitoyloxy)propyl 2-(trimethylammonio)ethyl phosphate


Mass: 760.076 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C42H82NO8P / Feature type: SUBJECT OF INVESTIGATION / Comment: phospholipid*YM
#5: Chemical
ChemComp-PT5 / [(2R)-1-octadecanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phospho ryl]oxy-propan-2-yl] (8Z)-icosa-5,8,11,14-tetraenoate / Phosphatidylinositol 4,5-bisphosphate / PtdIns(4,5)P2


Mass: 1047.088 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C47H85O19P3 / Feature type: SUBJECT OF INVESTIGATION / Comment: phospholipid*YM
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

ComponentName: Phospholipid phosphatase 1 / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Molecular weightValue: 32.2 kDa/nm / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human) / Cell: HEK 293F / Plasmid: pCAG
Buffer solutionpH: 8
SpecimenConc.: 10 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 281 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 1500 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM softwareName: PHENIX / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.61 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 142002 / Symmetry type: POINT
RefinementHighest resolution: 2.61 Å
Stereochemistry target values: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS)
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0058892
ELECTRON MICROSCOPYf_angle_d1.08511972
ELECTRON MICROSCOPYf_dihedral_angle_d17.231572
ELECTRON MICROSCOPYf_chiral_restr0.0891316
ELECTRON MICROSCOPYf_plane_restr0.011436

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