[English] 日本語
Yorodumi
- PDB-8tz2: Cryo-EM structure of bovine concentrative nucleoside transporter ... -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: PDB / ID: 8tz2
TitleCryo-EM structure of bovine concentrative nucleoside transporter 3 in MSP2N2 nanodiscs, apo state
ComponentsSodium/nucleoside cotransporter
KeywordsTRANSPORT PROTEIN / membrane protein / transporter / nucleoside
Function / homology
Function and homology information


Ribavirin ADME / purine-specific nucleoside:sodium symporter activity / Transport of nucleosides and free purine and pyrimidine bases across the plasma membrane / pyrimidine nucleoside transport / pyrimidine- and adenosine-specific:sodium symporter activity / purine nucleoside transmembrane transport / uridine transmembrane transporter activity / Azathioprine ADME / brush border membrane / plasma membrane
Similarity search - Function
Concentrative nucleoside transporter N-terminal domain / Concentrative nucleoside transporter / Concentrative nucleoside transporter C-terminal domain / Concentrative nucleoside transporter, metazoan/bacterial / Na+ dependent nucleoside transporter N-terminus / Na+ dependent nucleoside transporter C-terminus / Nucleoside transporter/FeoB GTPase, Gate domain / Nucleoside recognition
Similarity search - Domain/homology
1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine / Sodium/nucleoside cotransporter
Similarity search - Component
Biological speciesBos taurus (domestic cattle)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.8 Å
AuthorsWright, N.J. / Lee, S.-Y.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)R21AI166134 United States
CitationJournal: Nat Chem Biol / Year: 2024
Title: Antiviral drug recognition and elevator-type transport motions of CNT3.
Authors: Nicholas J Wright / Feng Zhang / Yang Suo / Lingyang Kong / Ying Yin / Justin G Fedor / Kedar Sharma / Mario J Borgnia / Wonpil Im / Seok-Yong Lee /
Abstract: Nucleoside analogs have broad clinical utility as antiviral drugs. Key to their systemic distribution and cellular entry are human nucleoside transporters. Here, we establish that the human ...Nucleoside analogs have broad clinical utility as antiviral drugs. Key to their systemic distribution and cellular entry are human nucleoside transporters. Here, we establish that the human concentrative nucleoside transporter 3 (CNT3) interacts with antiviral drugs used in the treatment of coronavirus infections. We report high-resolution single-particle cryo-electron microscopy structures of bovine CNT3 complexed with antiviral nucleosides N-hydroxycytidine, PSI-6206, GS-441524 and ribavirin, all in inward-facing states. Notably, we found that the orally bioavailable antiviral molnupiravir arrests CNT3 in four distinct conformations, allowing us to capture cryo-electron microscopy structures of drug-loaded outward-facing and drug-loaded intermediate states. Our studies uncover the conformational trajectory of CNT3 during membrane transport of a nucleoside analog antiviral drug, yield new insights into the role of interactions between the transport and the scaffold domains in elevator-like domain movements during drug translocation, and provide insights into the design of nucleoside analog antiviral prodrugs with improved oral bioavailability.
History
DepositionAug 26, 2023Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 13, 2024Provider: repository / Type: Initial release
Revision 1.1Sep 11, 2024Group: Data collection / Database references / Category: citation / em_admin
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _em_admin.last_update
Revision 1.2Sep 18, 2024Group: Data collection / Database references / Category: citation_author / em_admin
Item: _citation_author.identifier_ORCID / _em_admin.last_update

-
Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

-
Assembly

Deposited unit
A: Sodium/nucleoside cotransporter
C: Sodium/nucleoside cotransporter
B: Sodium/nucleoside cotransporter
hetero molecules


Theoretical massNumber of molelcules
Total (without water)242,82915
Polymers238,1303
Non-polymers4,69812
Water1086
1


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

-
Components

#1: Protein Sodium/nucleoside cotransporter


Mass: 79376.773 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Bos taurus (domestic cattle) / Gene: SLC28A3 / Cell line (production host): Sf9 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: F1MGR1
#2: Chemical
ChemComp-NA / SODIUM ION


Mass: 22.990 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: Na
#3: 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.: 6 / Source method: obtained synthetically / Formula: C42H82NO8P / Comment: phospholipid*YM
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 6 / Source method: isolated from a natural source / Formula: H2O
Has ligand of interestN

-
Experimental details

-
Experiment

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

-
Sample preparation

ComponentName: bCNT3 trimer / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Molecular weightValue: 0.232 MDa / Experimental value: YES
Source (natural)Organism: Bos taurus (domestic cattle)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm) / Strain: sf9
Buffer solutionpH: 8
Buffer component
IDConc.FormulaBuffer-ID
1150 mMNaCl1
220 mMTris1
SpecimenConc.: 8 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: LEICA EM GP / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 277 K

-
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: 1800 nm / Nominal defocus min: 800 nm / Cs: 2.7 mm / C2 aperture diameter: 100 µm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 2.4 sec. / Electron dose: 60 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 2622
EM imaging opticsEnergyfilter name: GIF Bioquantum / Energyfilter slit width: 20 eV
Image scansWidth: 5760 / Height: 4092

-
Processing

EM software
IDNameVersionCategory
1cryoSPARC3.3particle selection
2Latitude3.5image acquisition
4CTFFIND4CTF correction
7Coot0.96model fitting
9cryoSPARC3.3initial Euler assignment
10cryoSPARC3.3final Euler assignment
11cryoSPARC3.3classification
12cryoSPARC3.33D reconstruction
13PHENIX1.18model refinement
CTF correctionType: PHASE FLIPPING ONLY
Particle selectionNum. of particles selected: 2186756
SymmetryPoint symmetry: C3 (3 fold cyclic)
3D reconstructionResolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 102248 / Algorithm: FOURIER SPACE / Num. of class averages: 1 / Symmetry type: POINT
Atomic model buildingProtocol: FLEXIBLE FIT / Space: REAL
Atomic model buildingPDB-ID: 3TIJ

3tij


Accession code: 3TIJ / Source name: PDB / Type: experimental model
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00412948
ELECTRON MICROSCOPYf_angle_d0.54917547
ELECTRON MICROSCOPYf_dihedral_angle_d16.3744464
ELECTRON MICROSCOPYf_chiral_restr0.0391995
ELECTRON MICROSCOPYf_plane_restr0.0042115

+
About Yorodumi

-
News

-
Feb 9, 2022. New format data for meta-information of EMDB entries

New format data for meta-information of EMDB entries

  • Version 3 of the EMDB header file is now the official format.
  • The previous official version 1.9 will be removed from the archive.

Related info.:EMDB header

External links:wwPDB to switch to version 3 of the EMDB data model

-
Aug 12, 2020. Covid-19 info

Covid-19 info

URL: https://pdbj.org/emnavi/covid19.php

New page: Covid-19 featured information page in EM Navigator.

Related info.:Covid-19 info / Mar 5, 2020. Novel coronavirus structure data

+
Mar 5, 2020. Novel coronavirus structure data

Novel coronavirus structure data

Related info.:Yorodumi Speices / Aug 12, 2020. Covid-19 info

External links:COVID-19 featured content - PDBj / Molecule of the Month (242)：Coronavirus Proteases

+
Jan 31, 2019. EMDB accession codes are about to change! (news from PDBe EMDB page)

EMDB accession codes are about to change! (news from PDBe EMDB page)

  • The allocation of 4 digits for EMDB accession codes will soon come to an end. Whilst these codes will remain in use, new EMDB accession codes will include an additional digit and will expand incrementally as the available range of codes is exhausted. The current 4-digit format prefixed with “EMD-” (i.e. EMD-XXXX) will advance to a 5-digit format (i.e. EMD-XXXXX), and so on. It is currently estimated that the 4-digit codes will be depleted around Spring 2019, at which point the 5-digit format will come into force.
  • The EM Navigator/Yorodumi systems omit the EMD- prefix.

Related info.:Q: What is EMD? / ID/Accession-code notation in Yorodumi/EM Navigator

External links:EMDB Accession Codes are Changing Soon! / Contact to PDBj

+
Jul 12, 2017. Major update of PDB

Major update of PDB

  • wwPDB released updated PDB data conforming to the new PDBx/mmCIF dictionary.
  • This is a major update changing the version number from 4 to 5, and with Remediation, in which all the entries are updated.
  • In this update, many items about electron microscopy experimental information are reorganized (e.g. em_software).
  • Now, EM Navigator and Yorodumi are based on the updated data.

External links:wwPDB Remediation / Enriched Model Files Conforming to OneDep Data Standards Now Available in the PDB FTP Archive

-
Yorodumi

Thousand views of thousand structures

  • Yorodumi is a browser for structure data from EMDB, PDB, SASBDB, etc.
  • This page is also the successor to EM Navigator detail page, and also detail information page/front-end page for Omokage search.
  • The word "yorodu" (or yorozu) is an old Japanese word meaning "ten thousand". "mi" (miru) is to see.

Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi

Read more