6UK1

Crystal structure of nucleotide-binding domain 2 (NBD2) of the human Cystic Fibrosis Transmembrane Conductance Regulator (CFTR)

• PDB DOI: https://doi.org/10.2210/pdb6UK1/pdb

• Classification: HYDROLASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2019-10-03 Released: 2020-10-07 
• Deposition Author(s): Wang, C., Vorobiev, S.M., Vernon, R.M., Khazanov, N., Senderowitz, H., Forman-Kay, J.D., Hunt, J.F.
• Funding Organization(s): Cystic Fibrosis Foundation

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.69 Å
• R-Value Free: 0.304 
• R-Value Work: 0.273 
• R-Value Observed: 0.275 

Literature

A thermodynamically stabilized form of the second nucleotide binding domain from human CFTR shows a catalytically inactive conformation

Wang, C., Vorobiev, S., Vernon, R.M., Khazanov, N., Senderowitz, H., Forman-Kay, J.D., Hunt, J.F.

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)

Biological Assembly 2  

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

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

Biological Assembly 3  

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

Biological assembly 3 assigned by authors and generated by PISA (software)

Biological Assembly 4  

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

Biological assembly 4 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 104.34 kDa 
• Atom Count: 7,231 
• Modelled Residue Count: 912 
• Deposited Residue Count: 916 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cystic fibrosis transmembrane conductance regulator	A, B, C, D	229	Homo sapiens	Mutation(s): 8  Gene Names: CFTR, ABCC7 EC: 5.6.1.6
UniProt & NIH Common Fund Data Resources
Find proteins for P13569 (Homo sapiens) Explore P13569  Go to UniProtKB:  P13569
PHAROS:  P13569 GTEx:  ENSG00000001626

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ATP	E [auth A], G [auth B], I [auth C], K [auth D]	ADENOSINE-5'-TRIPHOSPHATE C10 H16 N5 O13 P3 ZKHQWZAMYRWXGA-KQYNXXCUSA-N
MG	F [auth A], H [auth B], J [auth C], L [auth D]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.69 Å
• R-Value Free: 0.304 
• R-Value Work: 0.273 
• R-Value Observed: 0.275 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 95.063	α = 90
b = 60.132	β = 99.57
c = 105.16	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-3000	data reduction
HKL-3000	data scaling
PHENIX	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2020-10-07 
Deposition Author(s): Wang, C., Vorobiev, S.M., Vernon, R.M., Khazanov, N., Senderowitz, H., Forman-Kay, J.D., Hunt, J.F.

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Funding Organization	Location	Grant Number
Cystic Fibrosis Foundation	United States	HUNT13XX0

Revision History  

• Version 1.0: 2020-10-07
  Type: Initial release
  
• Version 1.1: 2023-10-11
  Changes: Data collection, Database references, Refinement description