5NPT

Structure of the N-terminal domain of the yeast telomerase reverse transcriptase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.186 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure and function of the N-terminal domain of the yeast telomerase reverse transcriptase.

Petrova, O.A.Mantsyzov, A.B.Rodina, E.V.Efimov, S.V.Hackenberg, C.Hakanpaa, J.Klochkov, V.V.Lebedev, A.A.Chugunova, A.A.Malyavko, A.N.Zatsepin, T.S.Mishin, A.V.Zvereva, M.I.Lamzin, V.S.Dontsova, O.A.Polshakov, V.I.

(2018) Nucleic Acids Res. 46: 1525-1540

  • DOI: 10.1093/nar/gkx1275
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The elongation of single-stranded DNA repeats at the 3'-ends of chromosomes by telomerase is a key process in maintaining genome integrity in eukaryotes. Abnormal activation of telomerase leads to uncontrolled cell division, whereas its down-regulati ...

    The elongation of single-stranded DNA repeats at the 3'-ends of chromosomes by telomerase is a key process in maintaining genome integrity in eukaryotes. Abnormal activation of telomerase leads to uncontrolled cell division, whereas its down-regulation is attributed to ageing and several pathologies related to early cell death. Telomerase function is based on the dynamic interactions of its catalytic subunit (TERT) with nucleic acids-telomerase RNA, telomeric DNA and the DNA/RNA heteroduplex. Here, we present the crystallographic and NMR structures of the N-terminal (TEN) domain of TERT from the thermotolerant yeast Hansenula polymorpha and demonstrate the structural conservation of the core motif in evolutionarily divergent organisms. We identify the TEN residues that are involved in interactions with the telomerase RNA and in the recognition of the 'fork' at the distal end of the DNA product/RNA template heteroduplex. We propose that the TEN domain assists telomerase biological function and is involved in restricting the size of the heteroduplex during telomere repeat synthesis.


    Organizational Affiliation

    A.N. Belozersky Institute of Physico-Chemical Biology, M.V. Lomonosov Moscow State University, Moscow 119991, Russia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Telomerase reverse transcriptase
A
159Ogataea polymorphaMutation(s): 0 
EC: 2.7.7.49
Find proteins for R4IT35 (Ogataea polymorpha)
Go to UniProtKB:  R4IT35
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.186 
  • Space Group: I 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 38.195α = 90.00
b = 64.098β = 90.00
c = 126.064γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
REFMACrefinement
Aimlessdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-12-20
    Type: Initial release
  • Version 1.1: 2018-01-17
    Type: Database references
  • Version 1.2: 2018-02-28
    Type: Database references