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- PDB-9wx7: Structure of the L-proline-free human proline transporter purifie... -

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Basic information

Entry
Database: PDB / ID: 9wx7
TitleStructure of the L-proline-free human proline transporter purified in DDM/CHS buffer
ComponentsSodium-dependent proline transporter
KeywordsTRANSPORT PROTEIN / human proline transporter purified / 12 transmembrane helices
Function / homology
Function and homology information


proline:sodium symporter activity / L-proline transmembrane transporter activity / glycine import across plasma membrane / Creatine metabolism / proline transport / SLC-mediated transport of neurotransmitters / neurotransmitter transport / sodium ion transmembrane transport / protein catabolic process / synaptic membrane ...proline:sodium symporter activity / L-proline transmembrane transporter activity / glycine import across plasma membrane / Creatine metabolism / proline transport / SLC-mediated transport of neurotransmitters / neurotransmitter transport / sodium ion transmembrane transport / protein catabolic process / synaptic membrane / synapse / membrane / plasma membrane
Similarity search - Function
Sodium:neurotransmitter symporter family signature 2. / Sodium:neurotransmitter symporter family signature 1. / Sodium:neurotransmitter symporter / Sodium:neurotransmitter symporter superfamily / Sodium:neurotransmitter symporter family / Sodium:neurotransmitter symporter family profile.
Similarity search - Domain/homology
Sodium-dependent proline transporter
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.57 Å
AuthorsWu, J.X. / Zhou, Y. / Wang, N.Q. / Wang, J.Q.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)32371266 China
CitationJournal: To Be Published
Title: Structural insights into transport mechanism of proline transporter
Authors: Zhou, Y. / Wu, J.X.
History
DepositionSep 24, 2025Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Mar 25, 2026Provider: repository / Type: Initial release
Revision 1.0Mar 25, 2026Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Mar 25, 2026Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
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Revision 1.0Mar 25, 2026Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Mar 25, 2026Data content type: Mask / Part number: 1 / Data content type: Mask / Provider: repository / Type: Initial release
Revision 1.0Mar 25, 2026Data 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: Sodium-dependent proline transporter
hetero molecules


Theoretical massNumber of molelcules
Total (without water)71,0193
Polymers70,9601
Non-polymers582
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 Sodium-dependent proline transporter / Solute carrier family 6 member 7


Mass: 70960.219 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SLC6A7, PROT / Production host: Homo sapiens (human) / References: UniProt: Q99884
#2: Chemical ChemComp-NA / SODIUM ION


Mass: 22.990 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Na / Feature type: SUBJECT OF INVESTIGATION
#3: Chemical ChemComp-CL / CHLORIDE ION


Mass: 35.453 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Cl / 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: PROT / 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: Tecnai Polara / Image courtesy: FEI Company
MicroscopyModel: FEI POLARA 300
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM software
IDNameVersionCategory
1cryoSPARCparticle selection
9PHENIX1.2model refinement
13cryoSPARC3D reconstruction
CTF correctionType: NONE
3D reconstructionResolution: 2.57 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 226167 / Symmetry type: POINT
Atomic model buildingSource name: AlphaFold / Type: in silico model

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