2MJF

Solution structure of the complex between the yeast Rsa1 and Hit1 proteins


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Protein Hit1, a novel box C/D snoRNP assembly factor, controls cellular concentration of the scaffolding protein Rsa1 by direct interaction.

Rothe, B.Saliou, J.M.Quinternet, M.Back, R.Tiotiu, D.Jacquemin, C.Loegler, C.Schlotter, F.Pena, V.Eckert, K.Morera, S.Dorsselaer, A.V.Branlant, C.Massenet, S.Sanglier-Cianferani, S.Manival, X.Charpentier, B.

(2014) Nucleic Acids Res 42: 10731-10747

  • DOI: 10.1093/nar/gku612
  • Primary Citation of Related Structures:  
    2MJF

  • PubMed Abstract: 
  • Biogenesis of eukaryotic box C/D small nucleolar ribonucleoprotein particles (C/D snoRNPs) involves conserved trans-acting factors, which are proposed to facilitate the assembly of the core proteins Snu13p/15.5K, Nop58p/NOP58, Nop56p/NOP56 and Nop1p/Fibrillarin on box C/D small nucleolar RNAs (C/D snoRNAs) ...

    Biogenesis of eukaryotic box C/D small nucleolar ribonucleoprotein particles (C/D snoRNPs) involves conserved trans-acting factors, which are proposed to facilitate the assembly of the core proteins Snu13p/15.5K, Nop58p/NOP58, Nop56p/NOP56 and Nop1p/Fibrillarin on box C/D small nucleolar RNAs (C/D snoRNAs). In yeast, protein Rsa1 acts as a platform, interacting with both the RNA-binding core protein Snu13 and protein Pih1 of the Hsp82-R2TP chaperone complex. In this work, a proteomic approach coupled with functional and structural studies identifies protein Hit1 as a novel Rsa1p-interacting partner involved in C/D snoRNP assembly. Hit1p contributes to in vivo C/D snoRNA stability and pre-RNA maturation kinetics. It associates with U3 snoRNA precursors and influences its 3'-end processing. Remarkably, Hit1p is required to maintain steady-state levels of Rsa1p. This stabilizing activity is likely to be general across eukaryotic species, as the human protein ZNHIT3(TRIP3) showing sequence homology with Hit1p regulates the abundance of NUFIP1, the Rsa1p functional homolog. The nuclear magnetic resonance solution structure of the Rsa1p317-352-Hit1p70-164 complex reveals a novel mode of protein-protein association explaining the strong stability of the Rsa1p-Hit1p complex. Our biochemical data show that C/D snoRNAs and the core protein Nop58 can interact with the purified Snu13p-Rsa1p-Hit1p heterotrimer.


    Organizational Affiliation

    Ingénierie Moléculaire et Physiopathologie Articulaire (IMoPA), UMR 7365 CNRS Université de Lorraine, Biopôle, Campus Biologie Santé, 9 avenue de la forêt de Haye, CS 50184, 54505 Vandœuvre-lès-Nancy, France bruno.charpentier@univ-lorraine-nancy.fr.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Ribosome assembly 1 proteinA40Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RSA1YPL193W
UniProt
Find proteins for Q08932 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q08932 
Go to UniProtKB:  Q08932
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Protein HIT1B95Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: HIT1YJR055WJ1705
UniProt
Find proteins for P46973 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P46973 
Go to UniProtKB:  P46973
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 2MJF Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-09-10
    Type: Initial release
  • Version 1.1: 2014-10-01
    Changes: Database references