2VWB

Structure of the archaeal Kae1-Bud32 fusion protein MJ1130: a model for the eukaryotic EKC-KEOPS subcomplex involved in transcription and telomere homeostasis.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.05 Å
  • R-Value Free: 0.301 
  • R-Value Work: 0.220 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of the Archaeal Kae1/Bud32 Fusion Protein Mj1130: A Model for the Eukaryotic Ekc/Keops Subcomplex

Hecker, A.Lopreiato, R.Graille, M.Collinet, B.Forterre, P.Libri, D.Van Tilbeurgh, H.

(2008) Embo J. 27: 2340

  • DOI: 10.1038/emboj.2008.157

  • PubMed Abstract: 
  • The EKC/KEOPS yeast complex is involved in telomere maintenance and transcription. The Bud32p and kinase-associated endopeptidase 1 (Kaelp) components of the complex are totally conserved in eukarya and archaea. Their genes are fused in several archa ...

    The EKC/KEOPS yeast complex is involved in telomere maintenance and transcription. The Bud32p and kinase-associated endopeptidase 1 (Kaelp) components of the complex are totally conserved in eukarya and archaea. Their genes are fused in several archaeal genomes, suggesting that they physically interact. We report here the structure of the Methanocaldococcus jannaschii Kae1/Bud32 fusion protein MJ1130. Kae1 is an iron protein with an ASKHA fold and Bud32 is an atypical small RIO-type kinase. The structure MJ1130 suggests that association with Kae1 maintains the Bud32 kinase in an inactive state. We indeed show that yeast Kae1p represses the kinase activity of yeast Bud32p. Extensive conserved interactions between MjKae1 and MjBud32 suggest that Kae1p and Bud32p directly interact in both yeast and archaea. Mutations that disrupt the Kae1p/Bud32p interaction in the context of the yeast complex have dramatic effects in vivo and in vitro, similar to those observed with deletion mutations of the respective components. Direct interaction between Kae1p and Bud32p in yeast is required both for the transcription and the telomere homeostasis function of EKC/KEOPS.


    Organizational Affiliation

    Institut de Génétique et Microbiologie, Université Paris-Sud, IFR115 UMR8621-CNR, Orsay, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PUTATIVE O-SIALOGLYCOPROTEIN ENDOPEPTIDASE
A, B
535Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440)Mutation(s): 0 
Find proteins for Q58530 (Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440))
Go to UniProtKB:  Q58530
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ANP
Query on ANP

Download SDF File 
Download CCD File 
A, B
PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
C10 H17 N6 O12 P3
PVKSNHVPLWYQGJ-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.05 Å
  • R-Value Free: 0.301 
  • R-Value Work: 0.220 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 147.418α = 90.00
b = 148.948β = 90.00
c = 65.118γ = 90.00
Software Package:
Software NamePurpose
SHARPphasing
REFMACrefinement
SCALAdata scaling
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-08-19
    Type: Initial release
  • Version 1.1: 2016-01-27
    Type: Database references, Derived calculations, Source and taxonomy, Version format compliance