7W6S | pdb_00007w6s

CryoEM structure of human KChIP2-Kv4.3 complex

• PDB DOI: https://doi.org/10.2210/pdb7W6S/pdb
• EM Map EMD-32334: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Homo sapiens
• Expression System: Homo sapiens
• Mutation(s): No 
• Membrane Protein: Yes  OPMPDBTMmpstruc


• Deposited: 2021-12-02 Released: 2022-11-02 
• Deposition Author(s): Ma, D.M., Guo, J.T.
• Funding Organization(s): Ministry of Science and Technology (MoST, China), National Natural Science Foundation of China (NSFC)

---

Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.80 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structural basis for the gating modulation of Kv4.3 by auxiliary subunits.

Ma, D., Zhao, C., Wang, X., Li, X., Zha, Y., Zhang, Y., Fu, G., Liang, P., Guo, J., Lai, D.

(2022) Cell Res 32: 411-414

• PubMed: 34997220 
• DOI: https://doi.org/10.1038/s41422-021-00608-4
• Primary Citation Related Structures: 
  7W3Y, 7W6N, 7W6S, 7W6T

---

Organizational Affiliation: 
• Department of Biophysics, and Department of Pathology of Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
Department of Cardiology, Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, the First Affiliated Hospital, and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, the First Affiliated Hospital, and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China. [e-mail].
Department of Biophysics, and Department of Pathology of Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China. [e-mail].
Department of Cardiology, Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China. [e-mail].
State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China. [e-mail].
Cancer Center, Zhejiang University, Hangzhou, Zhejiang, China. [e-mail].
Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, Zhejiang, China. [e-mail].
Department of Cardiology, Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China. [e-mail].

Biological Assembly 1  

Global Symmetry: Cyclic - C4  (Explore in 3D)
Global Stoichiometry: Hetero 8-mer - A4B4 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 416.67 kDa 
• Atom Count: 20,268 
• Modeled Residue Count: 2,508 
• Deposited Residue Count: 3,688 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Kv channel-interacting protein 2	A, C, E, G	286	Homo sapiens	Mutation(s): 0  Gene Names: KCNIP2, KCHIP2 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NS61 (Homo sapiens) Explore Q9NS61  Go to UniProtKB:  Q9NS61
PHAROS:  Q9NS61 GTEx:  ENSG00000120049

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Isoform 2 of Potassium voltage-gated channel subfamily D member 3	B, D, F, H	636	Homo sapiens	Mutation(s): 0  Gene Names: KCND3 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for Q9UK17 (Homo sapiens) Explore Q9UK17  Go to UniProtKB:  Q9UK17
PHAROS:  Q9UK17 GTEx:  ENSG00000171385

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.80 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2022-11-02 
Deposition Author(s): Ma, D.M., Guo, J.T.

---

Funding Organization	Location	Grant Number
Ministry of Science and Technology (MoST, China)		2021FZZX001-28
Ministry of Science and Technology (MoST, China)		LD21H020001
National Natural Science Foundation of China (NSFC)		LR19C050002
National Natural Science Foundation of China (NSFC)		LY19H020007

Revision History  

• Version 1.0: 2022-11-02
  Type: Initial release
  
• Version 1.1: 2024-06-26
  Changes: Data collection
• Version 1.2: 2025-06-25
  Changes: Data collection, Structure summary