1OUN | pdb_00001oun

CRYSTAL STRUCTURE OF NUCLEAR TRANSPORT FACTOR 2 (NTF2)

• PDB DOI: https://doi.org/10.2210/pdb1OUN/pdb

• Classification: TRANSPORT
• Organism(s): Rattus norvegicus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1996-02-21 Released: 1997-04-01 
• Deposition Author(s): Bullock, T.L., Stewart, M.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 
  0.230 (Depositor) 
• R-Value Work: 
  0.158 (Depositor) 

Literature

The 1.6 angstroms resolution crystal structure of nuclear transport factor 2 (NTF2).

Bullock, T.L., Clarkson, W.D., Kent, H.M., Stewart, M.

(1996) J Mol Biology 260: 422-431

• PubMed: 8757804 
• DOI: https://doi.org/10.1006/jmbi.1996.0411
• Primary Citation Related Structures: 
  1OUN


• PubMed Abstract: 
  

  Nuclear transport factor 2 (NTF2) facilitates protein transport into the nucleus and interacts with both the small Ras-like GTPase Ran and nucleoporin p62. We have determined the structure of bacterially expressed rat NTF2 at 1.6 angstroms resolution using X-ray crystallography. The NTF2 polypeptide chain forms an alpha + beta barrel that opens at one end to form a distinctive hydrophobic cavity and its fold is homologous to that of scytalone dehydratase. The NTF2 hydrophobic cavity is a candidate for a potential binding site for other proteins involved in nuclear import such as Ran and nucleoporin p62. In addition, the hydrophobic cavity contains a putative catalytic Asp-His pair, which raises the possibility of an unanticipated enzymatic activity of the molecule that may have implications for the molecular mechanism of nuclear protein import.

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Organizational Affiliation: 
• MRC Laboratory of Molecular Biology, Cambridge, UK.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

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

Macromolecule Content 

• Total Structure Weight: 28.98 kDa 
• Atom Count: 2,071 
• Modeled Residue Count: 246 
• Deposited Residue Count: 254 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
NUCLEAR TRANSPORT FACTOR 2	A, B	127	Rattus norvegicus	Mutation(s): 0
UniProt
Find proteins for P61972 (Rattus norvegicus) Explore P61972  Go to UniProtKB:  P61972

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free:  0.230 (Depositor) 
• R-Value Work:  0.158 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 56	α = 90
b = 58.1	β = 90
c = 88.3	γ = 90

Software Package:

Software Name	Purpose
TNT	refinement
SHELX	refinement
SHELX	model building
MOSFLM	data reduction
CCP4	data scaling
SHELX	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1997-04-01 
Deposition Author(s): Bullock, T.L., Stewart, M.J.

Revision History  

• Version 1.0: 1997-04-01
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2019-07-17
  Changes: Advisory, Data collection, Other, Refinement description
• Version 1.4: 2019-08-14
  Changes: Data collection
• Version 1.5: 2024-02-14
  Changes: Advisory, Data collection, Database references