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- PDB-7fjq: Cryo EM structure of lysosomal ATPase -

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Basic information

Entry
Database: PDB / ID: 7fjq
TitleCryo EM structure of lysosomal ATPase
ComponentsPolyamine-transporting ATPase 13A2
KeywordsMEMBRANE PROTEIN / lysosomal ATPase transporter
Function / homology
Function and homology information


polyamine transmembrane transporter activity / polyamine transmembrane transport / spermine transmembrane transport / peptidyl-aspartic acid autophosphorylation / regulation of ubiquitin-specific protease activity / ABC-type polyamine transporter activity / regulation of autophagosome size / extracellular exosome biogenesis / P-type ion transporter activity / regulation of chaperone-mediated autophagy ...polyamine transmembrane transporter activity / polyamine transmembrane transport / spermine transmembrane transport / peptidyl-aspartic acid autophosphorylation / regulation of ubiquitin-specific protease activity / ABC-type polyamine transporter activity / regulation of autophagosome size / extracellular exosome biogenesis / P-type ion transporter activity / regulation of chaperone-mediated autophagy / negative regulation of lysosomal protein catabolic process / regulation of autophagy of mitochondrion / regulation of lysosomal protein catabolic process / intracellular monoatomic cation homeostasis / autophagosome-lysosome fusion / autophagosome organization / protein localization to lysosome / phosphatidic acid binding / positive regulation of exosomal secretion / multivesicular body membrane / ATPase-coupled monoatomic cation transmembrane transporter activity / intracellular zinc ion homeostasis / regulation of protein localization to nucleus / Translocases; Catalysing the translocation of other compounds; Linked to the hydrolysis of a nucleoside triphosphate / cupric ion binding / regulation of mitochondrion organization / regulation of endopeptidase activity / lysosomal transport / phosphatidylinositol-3,5-bisphosphate binding / cellular response to zinc ion / regulation of intracellular protein transport / lipid homeostasis / Ion transport by P-type ATPases / autophagosome membrane / cellular response to manganese ion / regulation of macroautophagy / regulation of neuron apoptotic process / transport vesicle / autophagosome / multivesicular body / lysosomal lumen / positive regulation of protein secretion / transmembrane transport / autophagy / intracellular calcium ion homeostasis / late endosome / late endosome membrane / manganese ion binding / cellular response to oxidative stress / monoatomic ion transmembrane transport / intracellular iron ion homeostasis / vesicle / protein autophosphorylation / lysosome / neuron projection / lysosomal membrane / neuronal cell body / positive regulation of gene expression / ATP hydrolysis activity / zinc ion binding / ATP binding / membrane
Similarity search - Function
: / : / P5-type ATPase cation transporter / P-type ATPase, subfamily V / E1-E2 ATPase / P-type ATPase, haloacid dehalogenase domain / P-type ATPase, phosphorylation site / P-type ATPase, cytoplasmic domain N / E1-E2 ATPases phosphorylation site. / P-type ATPase, A domain superfamily ...: / : / P5-type ATPase cation transporter / P-type ATPase, subfamily V / E1-E2 ATPase / P-type ATPase, haloacid dehalogenase domain / P-type ATPase, phosphorylation site / P-type ATPase, cytoplasmic domain N / E1-E2 ATPases phosphorylation site. / P-type ATPase, A domain superfamily / P-type ATPase / P-type ATPase, transmembrane domain superfamily / HAD superfamily / HAD-like superfamily
Similarity search - Domain/homology
SPERMINE / Polyamine-transporting ATPase 13A2
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.6 Å
AuthorsZhang, S.S.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)21532004, 31570733 China
CitationJournal: Cell Discov / Year: 2021
Title: Cryo-EM structures and transport mechanism of human P5B type ATPase ATP13A2.
Authors: Xudong Chen / Mingze Zhou / Sensen Zhang / Jian Yin / Ping Zhang / Xujun Xuan / Peiyi Wang / Zhiqiang Liu / Boda Zhou / Maojun Yang /
Abstract: Polyamines are important polycations that play critical roles in mammalian cells. ATP13A2 belongs to the orphan P5B adenosine triphosphatases (ATPase) family and has been established as a lysosomal ...Polyamines are important polycations that play critical roles in mammalian cells. ATP13A2 belongs to the orphan P5B adenosine triphosphatases (ATPase) family and has been established as a lysosomal polyamine exporter to maintain the normal function of lysosomes and mitochondria. Previous studies have reported that several human neurodegenerative disorders are related to mutations in the ATP13A2 gene. However, the transport mechanism of ATP13A2 in the lysosome remains unclear. Here, we report the cryo-electron microscopy (cryo-EM) structures of three distinct intermediates of the human ATP13A2, revealing key insights into the spermine (SPM) transport cycle in the lysosome. The transmembrane domain serves as a substrate binding site and the C-terminal domain is essential for protein stability and may play a regulatory role. These findings advance our understanding of the polyamine transport mechanism, the lipid-associated regulation, and the disease-associated mutants of ATP13A2.
History
DepositionAug 4, 2021Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Mar 8, 2023Provider: repository / Type: Initial release
Revision 1.1Oct 23, 2024Group: Data collection / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_admin.last_update / _pdbx_entry_details.has_protein_modification

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Polyamine-transporting ATPase 13A2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)126,0922
Polymers125,8901
Non-polymers2021
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area630 Å2
ΔGint5 kcal/mol
Surface area47410 Å2

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Components

#1: Protein Polyamine-transporting ATPase 13A2


Mass: 125889.555 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ATP13A2, PARK9 / Cell line (production host): HEK293 / Production host: Homo sapiens (human)
References: UniProt: Q9NQ11, Translocases; Catalysing the translocation of other compounds; Linked to the hydrolysis of a nucleoside triphosphate
#2: Chemical ChemComp-SPM / SPERMINE


Mass: 202.340 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H26N4
Has ligand of interestN
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: Lysosomal ATPase E2Pi state / Type: ORGANELLE OR CELLULAR COMPONENT / Entity ID: #1 / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human) / Cell: HEK293
Buffer solutionpH: 7.2
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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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
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 256000 / Symmetry type: POINT

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