3VSQ

Crystal Structure of the Cytoplasmic Domain of G-Protein-Gated Inward Rectifier Potassium Channel Kir3.2 E236R Mutant in the presence of ethanol

• PDB DOI: https://doi.org/10.2210/pdb3VSQ/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Mus musculus
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2012-05-02 Released: 2013-05-08 
• Deposition Author(s): Inanobe, A., Kurachi, Y.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.259 
• R-Value Work: 0.216 
• R-Value Observed: 0.216 

Literature

Coupling of G Protein Binding to Channel Gating in Mammalian Inward Rectifier K+ channels

Inanobe, A., Kurachi, Y.

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 and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 23.96 kDa 
• Atom Count: 1,688 
• Modelled Residue Count: 197 
• Deposited Residue Count: 208 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
G protein-activated inward rectifier potassium channel 2	A	208	Mus musculus	Mutation(s): 1  Gene Names: Kcnj6
UniProt & NIH Common Fund Data Resources
Find proteins for P48542 (Mus musculus) Explore P48542  Go to UniProtKB:  P48542
IMPC:  MGI:104781

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BME	B [auth A], C [auth A]	BETA-MERCAPTOETHANOL C2 H6 O S DGVVWUTYPXICAM-UHFFFAOYSA-N
MG	D [auth A]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.259 
• R-Value Work: 0.216 
• R-Value Observed: 0.216 
• Space Group: P 4 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 85.863	α = 90
b = 85.863	β = 90
c = 73.046	γ = 90

Software Package:

Software Name	Purpose
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
DENZO	data reduction
SCALEPACK	data scaling
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-05-08 
Deposition Author(s): Inanobe, A., Kurachi, Y.

Revision History  

• Version 1.0: 2013-05-08
  Type: Initial release
  
• Version 1.1: 2017-08-16
  Changes: Refinement description, Source and taxonomy
• Version 1.2: 2017-11-22
  Changes: Refinement description
• Version 1.3: 2024-03-20
  Changes: Data collection, Database references, Derived calculations