4KL6

Crystal structure of dimeric form of NpuDnaE intein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.197 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Intermolecular domain swapping induces intein-mediated protein alternative splicing.

Aranko, A.S.Oeemig, J.S.Kajander, T.Iwai, H.

(2013) Nat.Chem.Biol. 9: 616-622

  • DOI: 10.1038/nchembio.1320
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Protein sequences are diversified on the DNA level by recombination and mutation and can be further increased on the RNA level by alternative RNA splicing, involving introns that have important roles in many biological processes. The protein version ...

    Protein sequences are diversified on the DNA level by recombination and mutation and can be further increased on the RNA level by alternative RNA splicing, involving introns that have important roles in many biological processes. The protein version of introns (inteins), which catalyze protein splicing, were first reported in the 1990s. The biological roles of protein splicing still remain elusive because inteins neither provide any clear benefits nor have an essential role in their host organisms. We now report protein alternative splicing, in which new protein sequences can be produced by protein recombination by intermolecular domain swapping of inteins, as elucidated by NMR spectroscopy and crystal structures. We demonstrate that intein-mediated protein alternative splicing could be a new strategy to increase protein diversity (that is, functions) without any modification in genetic backgrounds. We also exploited it as a post-translational protein conformation-driven switch of protein functions (for example, as highly specific protein interference).


    Organizational Affiliation

    Research Program in Structural Biology and Biophysics, Institute of Biotechnology, University of Helsinki, Helsinki, Finland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA-directed DNA polymerase,Nucleic acid binding, OB-fold, tRNA/helicase-type
A, D, C, B
137Nostoc punctiforme (strain ATCC 29133 / PCC 73102)Mutation(s): 2 
EC: 2.7.7.7
Find proteins for B2J821 (Nostoc punctiforme (strain ATCC 29133 / PCC 73102))
Go to UniProtKB:  B2J821
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.197 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 39.720α = 109.02
b = 64.010β = 99.53
c = 64.220γ = 95.52
Software Package:
Software NamePurpose
PHASERphasing
PHENIXrefinement
XDSdata scaling
ADSCdata collection
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-09-04
    Type: Initial release
  • Version 1.1: 2013-10-23
    Type: Database references
  • Version 1.2: 2017-05-31
    Type: Structure summary