5CQS

Dimerization of Elp1 is essential for Elongator complex assembly


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.234 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Dimerization of elongator protein 1 is essential for Elongator complex assembly.

Xu, H.Lin, Z.Li, F.Diao, W.Dong, C.Zhou, H.Xie, X.Wang, Z.Shen, Y.Long, J.

(2015) Proc.Natl.Acad.Sci.USA 112: 10697-10702

  • DOI: 10.1073/pnas.1502597112
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The evolutionarily conserved Elongator complex, which is composed of six subunits elongator protein 1 (Elp1 to -6), plays vital roles in gene regulation. The molecular hallmark of familial dysautonomia (FD) is the splicing mutation of Elp1 [also know ...

    The evolutionarily conserved Elongator complex, which is composed of six subunits elongator protein 1 (Elp1 to -6), plays vital roles in gene regulation. The molecular hallmark of familial dysautonomia (FD) is the splicing mutation of Elp1 [also known as IκB kinase complex-associated protein (IKAP)] in the nervous system that is believed to be the primary cause of the devastating symptoms of this disease. Here, we demonstrate that disease-related mutations in Elp1 affect Elongator assembly, and we have determined the structure of the C-terminal portion of human Elp1 (Elp1-CT), which is sufficient for full-length Elp1 dimerization, as well as the structure of the cognate dimerization domain of yeast Elp1 (yElp1-DD). Our study reveals that the formation of the Elp1 dimer contributes to its stability in vitro and in vivo and is required for the assembly of both the human and yeast Elongator complexes. Functional studies suggest that Elp1 dimerization is essential for yeast viability. Collectively, our results identify the evolutionarily conserved dimerization domain of Elp1 and suggest that the pathological mechanisms underlying the onset and progression of Elp1 mutation-related disease may result from impaired Elongator activities.


    Organizational Affiliation

    State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin 300071, China; College of Life Sciences, Nankai University, Tianjin 300071, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China long.lab@icloud.com yuequan74@yahoo.com.,State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin 300071, China; College of Life Sciences, Nankai University, Tianjin 300071, China;,State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin 300071, China; College of Life Sciences, Nankai University, Tianjin 300071, China; Henan Key Laboratory of Microbial Engineering, Biology Institute of Henan Academy of Sciences, Zhengzhou 450008, China;,State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin 300071, China; College of Life Sciences, Nankai University, Tianjin 300071, China; long.lab@icloud.com yuequan74@yahoo.com.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Elongator complex protein 1
A, B, C, D
435Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: IKI3 (ELP1, TOT1)
Find proteins for Q06706 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  Q06706
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C, D
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.234 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 127.754α = 90.00
b = 157.744β = 93.09
c = 139.264γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
PHASESphasing
HKL-2000data scaling
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-08-19
    Type: Initial release
  • Version 1.1: 2015-10-14
    Type: Database references
  • Version 1.2: 2015-12-16
    Type: Experimental preparation