2R4G

The high resolution structure of the RNA-binding domain of telomerase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.71 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.200 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of the RNA-Binding Domain of Telomerase: Implications for RNA Recognition and Binding.

Rouda, S.Skordalakes, E.

(2007) Structure 15: 1403-1412

  • DOI: 10.1016/j.str.2007.09.007

  • PubMed Abstract: 
  • Telomerase, a ribonucleoprotein complex, replicates the linear ends of eukaryotic chromosomes, thus taking care of the "end of replication problem." TERT contains an essential and universally conserved domain (TRBD) that makes extensive contacts with ...

    Telomerase, a ribonucleoprotein complex, replicates the linear ends of eukaryotic chromosomes, thus taking care of the "end of replication problem." TERT contains an essential and universally conserved domain (TRBD) that makes extensive contacts with the RNA (TER) component of the holoenzyme, and this interaction is thought to facilitate TERT/TER assembly and repeat-addition processivity. Here, we present a high-resolution structure of TRBD from Tetrahymena thermophila. The nearly all-helical structure comprises a nucleic acid-binding fold suitable for TER binding. An extended pocket on the surface of the protein, formed by two conserved motifs (CP and T motifs) comprises TRBD's RNA-binding pocket. The width and the chemical nature of this pocket suggest that it binds both single- and double-stranded RNA, possibly stem I, and the template boundary element (TBE). Moreover, the structure provides clues into the role of this domain in TERT/TER stabilization and telomerase repeat-addition processivity.


    Organizational Affiliation

    Gene Expression and Regulation Program, The Wistar Institute, University of Pennsylvania, 3601 Spruce Street, Philadelphia, PA 19104, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Telomerase reverse transcriptase
A
267Tetrahymena thermophilaGene Names: TERT
EC: 2.7.7.49
Find proteins for O77448 (Tetrahymena thermophila)
Go to Gene View: TERT
Go to UniProtKB:  O77448
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BR
Query on BR

Download SDF File 
Download CCD File 
A
BROMIDE ION
Br
CPELXLSAUQHCOX-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.71 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.200 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 39.354α = 90.00
b = 67.220β = 90.66
c = 51.533γ = 90.00
Software Package:
Software NamePurpose
SOLVEphasing
HKL-2000data reduction
REFMACrefinement
ADSCdata collection
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-11-13
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance