3ZV0

Structure of the SHQ1P-CBF5P complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.180 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

The H/Aca Rnp Assembly Factor Shq1 Functions as an RNA Mimic.

Walbott, H.Machado-Pinilla, R.Liger, D.Blaud, M.Rety, S.Grozdanov, P.N.Godin, K.Van Tilbeurgh, H.Varani, G.Meier, U.T.Leulliot, N.

(2011) Genes Dev 25: 2398

  • DOI: 10.1101/gad.176834.111
  • Primary Citation of Related Structures:  
    3ZUZ, 3ZV0

  • PubMed Abstract: 
  • SHQ1 is an essential assembly factor for H/ACA ribonucleoproteins (RNPs) required for ribosome biogenesis, pre-mRNA splicing, and telomere maintenance. SHQ1 binds dyskerin/NAP57, the catalytic subunit of human H/ACA RNPs, and this interaction is modulated by mutations causing X-linked dyskeratosis congenita ...

    SHQ1 is an essential assembly factor for H/ACA ribonucleoproteins (RNPs) required for ribosome biogenesis, pre-mRNA splicing, and telomere maintenance. SHQ1 binds dyskerin/NAP57, the catalytic subunit of human H/ACA RNPs, and this interaction is modulated by mutations causing X-linked dyskeratosis congenita. We report the crystal structure of the C-terminal domain of yeast SHQ1, Shq1p, and its complex with yeast dyskerin/NAP57, Cbf5p, lacking its catalytic domain. The C-terminal domain of Shq1p interacts with the RNA-binding domain of Cbf5p and, through structural mimicry, uses the RNA-protein-binding sites to achieve a specific protein-protein interface. We propose that Shq1p operates as a Cbf5p chaperone during RNP assembly by acting as an RNA placeholder, thereby preventing Cbf5p from nonspecific RNA binding before association with an H/ACA RNA and the other core RNP proteins.


    Organizational Affiliation

    Institut de Biochimie et de Biophysique Moléculaire et Cellulaire, Université de Paris-Sud, Orsay Cedex, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN SHQ1 AB369Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: SHQ1YIL104C
Find proteins for P40486 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P40486 
Go to UniProtKB:  P40486
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
H/ACA RIBONUCLEOPROTEIN COMPLEX SUBUNIT 4 CD195Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: CBF5YLR175WL9470.11
EC: 5.4.99
Find proteins for P33322 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P33322 
Go to UniProtKB:  P33322
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.180 
  • Space Group: P 4 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 154.06α = 90
b = 154.06β = 90
c = 121.59γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-11-30
    Type: Initial release
  • Version 1.1: 2019-02-27
    Changes: Data collection, Experimental preparation, Other