7VVH

Crystal Structure of the Kv7.1 C-terminal Domain in Complex with Calmodulin disease mutation E140G

• PDB DOI: https://doi.org/10.2210/pdb7VVH/pdb

• Classification: SIGNALING PROTEIN/METAL BINDING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2021-11-06 Released: 2022-11-09 
• Deposition Author(s): Chen, L.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.272 
• R-Value Work: 0.239 
• R-Value Observed: 0.242 

Literature

Crystal Structure of the Kv7.1 C-terminal Domain in Complex with Calmodulin disease mutation F141L

Chen, L.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 24.98 kDa 
• Atom Count: 1,576 
• Modelled Residue Count: 209 
• Deposited Residue Count: 218 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Potassium voltage-gated channel subfamily KQT member 1,Potassium voltage-gated channel subfamily KQT member 1	A	69	Homo sapiens	Mutation(s): 0  Gene Names: KCNQ1, KCNA8, KCNA9, KVLQT1
UniProt & NIH Common Fund Data Resources
Find proteins for P51787 (Homo sapiens) Explore P51787  Go to UniProtKB:  P51787
PHAROS:  P51787 GTEx:  ENSG00000053918

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Calmodulin-1	B [auth C]	149	Homo sapiens	Mutation(s): 1  Gene Names: CALM1, CALM, CAM, CAM1
UniProt & NIH Common Fund Data Resources
Find proteins for P0DP23 (Homo sapiens) Explore P0DP23  Go to UniProtKB:  P0DP23
PHAROS:  P0DP23 GTEx:  ENSG00000198668

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA (Subject of Investigation/LOI)	C, D [auth C]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.272 
• R-Value Work: 0.239 
• R-Value Observed: 0.242 
• Space Group: P 2₁ 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 40.775	α = 90
b = 63.882	β = 90
c = 79.417	γ = 90

Software Package:

Software Name	Purpose
HKL-3000	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
PHENIX	model building
HKL-3000	data reduction

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2022-11-09 
Deposition Author(s): Chen, L.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	32022073

Revision History  

• Version 1.0: 2022-11-09
  Type: Initial release
  
• Version 1.1: 2023-11-29
  Changes: Data collection, Refinement description