4LMO

Structure of a vertebrate RNA binding domain of telomerase (TRBD)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.37 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.220 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

A Motif in the Vertebrate Telomerase N-Terminal Linker of TERT Contributes to RNA Binding and Telomerase Activity and Processivity.

Harkisheimer, M.Mason, M.Shuvaeva, E.Skordalakes, E.

(2013) Structure 21: 1870-1878

  • DOI: 10.1016/j.str.2013.08.013

  • PubMed Abstract: 
  • Telomerase is a ribonucleoprotein reverse transcriptase that replicates the ends of chromosomes, thus maintaining genome stability. Telomerase ribonucleoprotein assembly is primarily mediated by the RNA binding domain (TRBD) of the enzyme. Here we pr ...

    Telomerase is a ribonucleoprotein reverse transcriptase that replicates the ends of chromosomes, thus maintaining genome stability. Telomerase ribonucleoprotein assembly is primarily mediated by the RNA binding domain (TRBD) of the enzyme. Here we present the high-resolution TRBD structure of the vertebrate, Takifugu rubripes (trTRBD). The structure shows that with the exception of the N-terminal linker, the trTRBD is conserved with the Tribolium castaneum and Tetrahymena thermophila TRBDs, suggesting evolutionary conservation across species. The structure provides a view of the structural organization of the vertebrate-specific VSR motif that binds the activation domain (CR4/5) of the RNA component of telomerase. It also reveals a motif (TFLY) that forms part of the T-CP pocket implicated in template boundary element (TBE) binding. Mutant proteins of conserved residues that consist of part of the T and TFLY motifs disrupt trTRBD-TBE binding and telomerase activity and processivity, supporting an essential role of these motifs in telomerase RNP assembly and function.


    Organizational Affiliation

    The Wistar Institute, 3601 Spruce Street, Philadelphia, PA 19104, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Telomerase reverse transcriptase
A, B, C, D
254Takifugu rubripesGene Names: tert
EC: 2.7.7.49
Find proteins for Q4KTA7 (Takifugu rubripes)
Go to UniProtKB:  Q4KTA7
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.37 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.220 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 48.629α = 90.00
b = 84.508β = 94.31
c = 137.174γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
CBASSdata collection
SCALAdata scaling
MOSFLMdata reduction
SOLVEphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-10-09
    Type: Initial release
  • Version 1.1: 2013-10-30
    Type: Database references