4FB9

Structure of mutant RIP from barley seeds


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.171 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structures of the ribosome-inactivating protein from barley seeds reveal a unique activation mechanism.

Lee, B.G.Kim, M.K.Kim, B.W.Suh, S.W.Song, H.K.

(2012) Acta Crystallogr D Biol Crystallogr 68: 1488-1500

  • DOI: 10.1107/S0907444912037110
  • Primary Citation of Related Structures:  
    4FBH, 4FBA, 4FBB, 4FBC, 4FB9

  • PubMed Abstract: 
  • Ribosome-inactivating protein (RIP), a defence protein found in various plants, possesses different chain architectures and activation mechanisms. The RIP from barley (bRIP) is a type I RIP and has sequence features that are divergent from those of type ...

    Ribosome-inactivating protein (RIP), a defence protein found in various plants, possesses different chain architectures and activation mechanisms. The RIP from barley (bRIP) is a type I RIP and has sequence features that are divergent from those of type I and type II RIPs from dicotyledonous plants and even the type III RIP from maize. This study presents the first crystal structure of an RIP from a cereal crop, barley, in free, AMP-bound and adenine-bound states. For phasing, a codon-optimized synthetic brip1 gene was used and a vector was constructed to overexpress soluble bRIP fusion proteins; such expression has been verified in a number of cases. The overall structure of bRIP shows folding similar to that observed in other RIPs but also shows significant differences in specific regions, particularly in a switch region that undergoes a structural transition between a 3(10)-helix and a loop depending on the liganded state. The switch region is in a position equivalent to that of a proteolytically susceptible and putative ribosome-binding site in type III RIPs. Thus, the bRIP structure confirms the detailed enzymatic mechanism of this N-glycosidase and reveals a novel activation mechanism for type I RIPs from cereal crops.


    Organizational Affiliation

    School of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Republic of Korea.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Protein synthesis inhibitor I ABCD282Hordeum vulgareMutation(s): 3 
Gene Names: RIP30
EC: 3.2.2.22
Find proteins for P22244 (Hordeum vulgare)
Explore P22244 
Go to UniProtKB:  P22244
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A,B,C,DL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.171 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 130.284α = 90
b = 141.908β = 126.92
c = 84.819γ = 90
Software Package:
Software NamePurpose
SCALEPACKdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection
HKL-2000data reduction
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-10-31
    Type: Initial release
  • Version 1.1: 2013-01-23
    Changes: Database references