2ZFU

Structure of the methyltransferase-like domain of nucleomethylin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Epigenetic control of rDNA loci in response to intracellular energy status

Murayama, A.Ohmori, K.Fujimura, A.Minami, H.Yasuzawa-Tanaka, K.Kuroda, T.Oie, S.Daitoku, H.Okuwaki, M.Nagata, K.Fukamizu, A.Kimura, K.Shimizu, T.Yanagisawa, J.

(2008) Cell 133: 627-639

  • DOI: 10.1016/j.cell.2008.03.030

  • PubMed Abstract: 
  • Intracellular energy balance is important for cell survival. In eukaryotic cells, the most energy-consuming process is ribosome biosynthesis, which adapts to changes in intracellular energy status. However, the mechanism that links energy status and ...

    Intracellular energy balance is important for cell survival. In eukaryotic cells, the most energy-consuming process is ribosome biosynthesis, which adapts to changes in intracellular energy status. However, the mechanism that links energy status and ribosome biosynthesis is largely unknown. Here, we describe eNoSC, a protein complex that senses energy status and controls rRNA transcription. eNoSC contains Nucleomethylin, which binds histone H3 dimethylated Lys9 in the rDNA locus, in a complex with SIRT1 and SUV39H1. Both SIRT1 and SUV39H1 are required for energy-dependent transcriptional repression, suggesting that a change in the NAD(+)/NADH ratio induced by reduction of energy status could activate SIRT1, leading to deacetylation of histone H3 and dimethylation at Lys9 by SUV39H1, thus establishing silent chromatin in the rDNA locus. Furthermore, eNoSC promotes restoration of energy balance by limiting rRNA transcription, thus protecting cells from energy deprivation-dependent apoptosis. These findings provide key insight into the mechanisms of energy homeostasis in cells.


    Organizational Affiliation

    Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8572, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cerebral protein 1
A, B
215Homo sapiensMutation(s): 0 
Gene Names: RRP8 (KIAA0409, NML)
EC: 2.1.1.-
Find proteins for O43159 (Homo sapiens)
Go to Gene View: RRP8
Go to UniProtKB:  O43159
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SAH
Query on SAH

Download SDF File 
Download CCD File 
A, B
S-ADENOSYL-L-HOMOCYSTEINE
C14 H20 N6 O5 S
ZJUKTBDSGOFHSH-WFMPWKQPSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.192 
  • Space Group: P 61
Unit Cell:
Length (Å)Angle (°)
a = 43.810α = 90.00
b = 43.810β = 90.00
c = 403.910γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data scaling
REFMACrefinement
ADSCdata collection
HKL-2000data reduction
SOLVEphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-12-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance