2P7T

Crystal Structure of KcsA mutant

• PDB DOI: https://doi.org/10.2210/pdb2P7T/pdb

• Classification: MEMBRANE PROTEIN
• Organism(s): Mus musculus, Streptomyces lividans
• Expression System: Escherichia coli
• Mutation(s): Yes 
• Membrane Protein: Yes  PDBTMMemProtMD


• Deposited: 2007-03-20 Released: 2007-10-09 
• Deposition Author(s): Cordero-Morales, J.F., Vishwanath, J., Lewis, A., Valeria, V.R., Cortes, D.M., Roux, B., Perozo, E.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.05 Å
• R-Value Free: 0.234 
• R-Value Work: 0.219 

Literature

Crystal Structure of KcsA mutant

Cordero-Morales, J.F., Vishwanath, J., Lewis, A., Vasquez, V., Cortes, D.M., Roux, B., Perozo, E.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C4  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

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

Biological assembly 2 assigned by authors and generated by PISA (software)

Biological Assembly 3  

Global Symmetry: Cyclic - C4  (Explore in 3D)
Global Stoichiometry: Hetero 12-mer - A4B4C4 

Biological assembly 3 generated by PISA,PQS (software)

Macromolecule Content

• Total Structure Weight: 58.61 kDa 
• Atom Count: 4,273 
• Modelled Residue Count: 534 
• Deposited Residue Count: 534 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
FAB-A	A	219	Mus musculus	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
FAB-B	B	212	Mus musculus	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Voltage-gated potassium channel	C	103	Streptomyces lividans	Mutation(s): 2  Gene Names: kcsA, skc1 Membrane Entity: Yes
UniProt
Find proteins for P0A334 (Streptomyces lividans) Explore P0A334  Go to UniProtKB:  P0A334

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
1EM	K [auth C]	(1S)-2-HYDROXY-1-[(NONANOYLOXY)METHYL]ETHYL MYRISTATE C26 H50 O5 IHUWMVGHYXVIRN-DEOSSOPVSA-N
F09	D [auth A]	NONAN-1-OL C9 H20 O ZWRUINPWMLAQRD-UHFFFAOYSA-N
K	E [auth C], F [auth C], G [auth C], H [auth C], I [auth C], J [auth C]	POTASSIUM ION K NPYPAHLBTDXSSS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.05 Å
• R-Value Free: 0.234 
• R-Value Work: 0.219 
• Space Group: I 4

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 156.339	α = 90
b = 156.339	β = 90
c = 76.001	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
PDB_EXTRACT	data extraction
CBASS	data collection
HKL-2000	data reduction
HKL-2000	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2007-10-09 
Deposition Author(s): Cordero-Morales, J.F., Vishwanath, J., Lewis, A., Valeria, V.R., Cortes, D.M., Roux, B., Perozo, E.

Revision History  

• Version 1.0: 2007-10-09
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.2: 2011-08-10
  Changes: Structure summary
• Version 1.3: 2021-10-20
  Changes: Database references, Derived calculations
• Version 1.4: 2024-11-20
  Changes: Data collection, Structure summary