5UM4

Crystal structure of the F255A mutant Kir3.1 cytoplasmic pore domain

• PDB DOI: https://doi.org/10.2210/pdb5UM4/pdb

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


• Deposited: 2017-01-26 Released: 2018-01-31 
• Deposition Author(s): Meinke, G., Bohm, A., Noujaim, S.
• Funding Organization(s): National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.267 
• R-Value Work: 0.224 
• R-Value Observed: 0.226 

Starting Model: experimental

Literature

Crystal structure of the F255A mutant Kir3.1 cytoplasmic pore domain

Meinke, G., Bohm, A., Noujaim, S.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Macromolecule Content

• Total Structure Weight: 24.05 kDa 
• Atom Count: 1,577 
• Modelled Residue Count: 197 
• Deposited Residue Count: 210 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
G protein-activated inward rectifier potassium channel 1	A	210	Anolis carolinensis, Mus musculus This entity is chimeric	Mutation(s): 1  Gene Names: LOC100559481, Kcnj3, Girk1
UniProt & NIH Common Fund Data Resources
Find proteins for P63250 (Mus musculus) Explore P63250  Go to UniProtKB:  P63250
IMPC:  MGI:104742

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
CME	A	L-PEPTIDE LINKING	C5 H11 N O3 S2		CYS

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.267 
• R-Value Work: 0.224 
• R-Value Observed: 0.226 
• Space Group: P 4 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 80.07	α = 90
b = 80.07	β = 90
c = 85.04	γ = 90

Software Package:

Software Name	Purpose
SCALA	data scaling
PHASER	phasing
PHENIX	refinement
PDB_EXTRACT	data extraction
MOSFLM	data reduction
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2018-01-31 
Deposition Author(s): Meinke, G., Bohm, A., Noujaim, S.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI)	United States	--

Revision History  

• Version 1.0: 2018-01-31
  Type: Initial release
  
• Version 1.1: 2022-03-23
  Changes: Author supporting evidence, Database references
• Version 1.2: 2023-10-04
  Changes: Data collection, Refinement description
• Version 1.3: 2024-11-06
  Changes: Structure summary