Crystal structure of signal transducing protein

Experimental Data Snapshot

  • Resolution: 2.20 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.197 

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Crystal Structure of Gib2, a Signal-Transducing Protein Scaffold Associated with Ribosomes in Cryptococcus Neoformans.

Ero, R.Dimitrova, V.T.Chen, Y.Bu, W.Feng, S.Liu, T.Wang, P.Xue, C.Tan, S.M.Gao, Y.G.

(2015) Sci Rep 5: 8688

  • DOI: https://doi.org/10.1038/srep08688
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The atypical Gβ-like/RACK1 Gib2 protein promotes cAMP signalling that plays a central role in regulating the virulence of Cryptococcus neoformans. Gib2 contains a seven-bladed β transducin structure and is emerging as a scaffold protein interconnecting signalling pathways through interactions with various protein partners. Here, we present the crystal structure of Gib2 at a 2.2-Å resolution. The structure allows us to analyse the association between Gib2 and the ribosome, as well as to identify the Gib2 amino acid residues involved in ribosome binding. Our studies not only suggest that Gib2 has a role in protein translation but also present Gib2 as a physical link at the crossroads of various regulatory pathways important for the growth and virulence of C. neoformans.

  • Organizational Affiliation

    Public Health Research Institute, Department of Microbiology and Molecular Genetics, Rutgers University, Newark, NJ, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
G PROTEIN BETA SUBUNIT GIB2314Cryptococcus neoformans var. grubii H99Mutation(s): 0 
Gene Names: CNAG_05465
Find proteins for J9W3X8 (Cryptococcus neoformans var. grubii serotype A (strain H99 / ATCC 208821 / CBS 10515 / FGSC 9487))
Explore J9W3X8 
Go to UniProtKB:  J9W3X8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupJ9W3X8
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.20 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.197 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 81.673α = 90
b = 81.673β = 90
c = 135.982γ = 90
Software Package:
Software NamePurpose
iMOSFLMdata reduction
XDSdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-03-18
    Type: Initial release