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- PDB-9eku: (+)ML-SI3 bound TRPML1-V432A/A433G in a pre-open state -

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Basic information

Entry
Database: PDB / ID: 9eku
Title(+)ML-SI3 bound TRPML1-V432A/A433G in a pre-open state
ComponentsMucolipin-1
KeywordsTRANSPORT PROTEIN / TRPML / calcium channel / ion transport / cryo-EM
Function / homology
Function and homology information


positive regulation of lysosome organization / calcium ion export / intracellularly phosphatidylinositol-3,5-bisphosphate-gated monatomic cation channel activity / phagosome maturation / NAADP-sensitive calcium-release channel activity / iron ion transmembrane transporter activity / ligand-gated calcium channel activity / cellular response to pH / Transferrin endocytosis and recycling / iron ion transmembrane transport ...positive regulation of lysosome organization / calcium ion export / intracellularly phosphatidylinositol-3,5-bisphosphate-gated monatomic cation channel activity / phagosome maturation / NAADP-sensitive calcium-release channel activity / iron ion transmembrane transporter activity / ligand-gated calcium channel activity / cellular response to pH / Transferrin endocytosis and recycling / iron ion transmembrane transport / monoatomic anion channel activity / TRP channels / sodium channel activity / monoatomic cation transport / autophagosome maturation / potassium channel activity / phagocytic cup / monoatomic cation channel activity / release of sequestered calcium ion into cytosol / cellular response to calcium ion / transferrin transport / cell projection / calcium ion transmembrane transport / calcium channel activity / phagocytic vesicle membrane / late endosome membrane / late endosome / protein homotetramerization / adaptive immune response / lysosome / receptor complex / endosome membrane / lysosomal membrane / intracellular membrane-bounded organelle / lipid binding / Golgi apparatus / nucleoplasm / identical protein binding / membrane / plasma membrane
Similarity search - Function
: / Mucolipin / : / Mucolipin, extracytosolic domain / Polycystin cation channel, PKD1/PKD2 / Polycystin cation channel
Similarity search - Domain/homology
Chem-ZB4 / Mucolipin-1
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.68 Å
AuthorsSchmiege, P. / Li, X.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R35 GM149533 United States
CitationJournal: To Be Published
Title: (+)ML-SI3 bound TRPML1-V432A/A433G in a pre-open state
Authors: Schmiege, P. / Li, X.
History
DepositionDec 3, 2024Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jun 18, 2025Provider: repository / Type: Initial release
Revision 1.0Jun 18, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Jun 18, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Jun 18, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Jun 18, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Jun 18, 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: Mucolipin-1
B: Mucolipin-1
C: Mucolipin-1
D: Mucolipin-1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)265,8788
Polymers264,1604
Non-polymers1,7184
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
Mucolipin-1 / ML1 / MG-2 / Mucolipidin / Transient receptor potential channel mucolipin 1 / TRPML1


Mass: 66039.883 Da / Num. of mol.: 4 / Mutation: V432A/A433G
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: MCOLN1, ML4, TRPML1, MSTP080 / Production host: Homo sapiens (human) / References: UniProt: Q9GZU1
#2: Chemical
ChemComp-ZB4 / N-{(1S,2S)-2-[4-(2-methoxyphenyl)piperazin-1-yl]cyclohexyl}benzenesulfonamide


Mass: 429.576 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C23H31N3O3S / 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

ComponentName: (+)ML-SI3 bound TRPML1-V432A/A433G / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.5
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: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 1800 nm / Nominal defocus min: 800 nm
Image recordingElectron dose: 60 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k)

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Processing

CTF correctionType: NONE
3D reconstructionResolution: 2.68 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 32819 / Symmetry type: POINT

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