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- PDB-9ei0: Human Kv1.3 mutant - G427H with A0194009G09 nanobodies -

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Basic information

Entry
Database: PDB / ID: 9ei0
TitleHuman Kv1.3 mutant - G427H with A0194009G09 nanobodies
Components
  • A0194009G09 nanobody
  • Potassium voltage-gated channel subfamily A member 3,Green fluorescent protein
KeywordsIMMUNE SYSTEM / Voltage-gated Potassium channel
Function / homology
Function and homology information


voltage-gated monoatomic ion channel activity / delayed rectifier potassium channel activity / Voltage gated Potassium channels / action potential / voltage-gated potassium channel activity / voltage-gated potassium channel complex / potassium ion transmembrane transport / bioluminescence / generation of precursor metabolites and energy / protein homooligomerization ...voltage-gated monoatomic ion channel activity / delayed rectifier potassium channel activity / Voltage gated Potassium channels / action potential / voltage-gated potassium channel activity / voltage-gated potassium channel complex / potassium ion transmembrane transport / bioluminescence / generation of precursor metabolites and energy / protein homooligomerization / potassium ion transport / axon / perinuclear region of cytoplasm / membrane / plasma membrane
Similarity search - Function
Potassium channel, voltage dependent, Kv1.3 / Potassium channel, voltage dependent, Kv1 / Potassium channel, voltage dependent, Kv / Potassium channel tetramerisation-type BTB domain / BTB/POZ domain / Voltage-gated potassium channel / Broad-Complex, Tramtrack and Bric a brac / BTB/POZ domain / Voltage-dependent channel domain superfamily / Green fluorescent protein, GFP ...Potassium channel, voltage dependent, Kv1.3 / Potassium channel, voltage dependent, Kv1 / Potassium channel, voltage dependent, Kv / Potassium channel tetramerisation-type BTB domain / BTB/POZ domain / Voltage-gated potassium channel / Broad-Complex, Tramtrack and Bric a brac / BTB/POZ domain / Voltage-dependent channel domain superfamily / Green fluorescent protein, GFP / Green fluorescent protein-related / Green fluorescent protein / Green fluorescent protein / SKP1/BTB/POZ domain superfamily / Ion transport domain / Ion transport protein
Similarity search - Domain/homology
: / Potassium voltage-gated channel subfamily A member 3 / Green fluorescent protein
Similarity search - Component
Biological speciesHomo sapiens (human)
Lama glama (llama)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.91 Å
AuthorsSelvakumar, P. / Swartz, K.J.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)NS 002945-28 United States
CitationJournal: To Be Published
Title: Human Kv1.3 mutant - G427H
Authors: Selvakumar, P. / Swartz, K.J.
History
DepositionNov 25, 2024Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 3, 2025Provider: repository / Type: Initial release
Revision 1.0Dec 3, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Dec 3, 2025Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Dec 3, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Dec 3, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Dec 3, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Dec 3, 2025Data content type: Mask / Part number: 1 / Data content type: Mask / Provider: repository / Type: Initial release
Revision 1.0Dec 3, 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: Potassium voltage-gated channel subfamily A member 3,Green fluorescent protein
E: A0194009G09 nanobody
F: A0194009G09 nanobody
G: A0194009G09 nanobody
H: A0194009G09 nanobody
B: Potassium voltage-gated channel subfamily A member 3,Green fluorescent protein
C: Potassium voltage-gated channel subfamily A member 3,Green fluorescent protein
D: Potassium voltage-gated channel subfamily A member 3,Green fluorescent protein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)435,95312
Polymers435,7968
Non-polymers1564
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

#1: Protein
Potassium voltage-gated channel subfamily A member 3,Green fluorescent protein / HGK5 / HLK3 / HPCN3 / Voltage-gated K(+) channel HuKIII / Voltage-gated potassium channel subunit Kv1.3


Mass: 95099.594 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: KCNA3, HGK5, GFP / Production host: Homo sapiens (human) / References: UniProt: P22001, UniProt: P42212
#2: Antibody
A0194009G09 nanobody


Mass: 13849.449 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Lama glama (llama) / Production host: Escherichia coli (E. coli)
#3: Chemical
ChemComp-K / POTASSIUM ION


Mass: 39.098 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: K
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: Kv1.3-G427H mutant protein fused with mVenus and A0194009G09 nanobodies
Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Aequorea victoria (jellyfish)
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: OTHER
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 800 nm
Image recordingElectron dose: 51.6 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM software
IDNameVersionCategory
1RELIONparticle selection
2PHENIX1.21.2_5419:model refinement
13cryoSPARC3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C4 (4 fold cyclic)
3D reconstructionResolution: 2.91 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 259382 / Symmetry type: POINT

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