5H7C

Crystal structure of a repeat protein with two Protein A-DHR14 repeat modules


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.205 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Construction of novel repeat proteins with rigid and predictable structures using a shared helix method.

Youn, S.J.Kwon, N.Y.Lee, J.H.Kim, J.H.Choi, J.Lee, H.Lee, J.O.

(2017) Sci Rep 7: 2595-2595

  • DOI: 10.1038/s41598-017-02803-z
  • Primary Citation of Related Structures:  
    5H75, 5H76, 5H77, 5H78, 5H79, 5H7A, 5H7B, 5H7C, 5H7D, 5X3F, 5XBY

  • PubMed Abstract: 
  • Generating artificial protein assemblies with complex shapes requires a method for connecting protein components with stable and predictable structures. Currently available methods for creating rigid protein assemblies rely on either complicated calculations or extensive trial and error ...

    Generating artificial protein assemblies with complex shapes requires a method for connecting protein components with stable and predictable structures. Currently available methods for creating rigid protein assemblies rely on either complicated calculations or extensive trial and error. We describe a simple and efficient method for connecting two proteins via a fused alpha helix that is formed by joining two preexisting helices into a single extended helix. Because the end-to-end ligation of helices does not guarantee the formation of a continuous helix, we superimposed 1-2 turns of pairs of connecting helices by using a molecular graphics program. Then, we chose amino acids from the two natural sequences that would stabilize the connecting helix. This "shared helix method" is highly efficient. All the designed proteins that could be produced in Escherichia coli were readily crystallized and had the expected fusion structures. To prove the usefulness of this method, we produced two novel repeat proteins by assembling several copies of natural or artificial proteins with alpha helices at both termini. Their crystal structures demonstrated the successful assembly of the repeating units with the intended curved shapes. We propose that this method could dramatically expand the available repertoire of natural repeat proteins.


    Organizational Affiliation

    Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Korea. jieoh@kaist.ac.kr.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Immunoglobulin G-binding protein A, DHR14A, B [auth C]404Staphylococcus aureussynthetic constructMutation(s): 10 
Gene Names: spa
UniProt
Find proteins for P38507 (Staphylococcus aureus)
Explore P38507 
Go to UniProtKB:  P38507
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.205 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.658α = 84.19
b = 75.528β = 83.72
c = 80.013γ = 75.21
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
SCALEPACKdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-06-28
    Type: Initial release