6I0T

Crystal structure of DmTailor in complex with GpU


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.206 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural basis for acceptor RNA substrate selectivity of the 3' terminal uridylyl transferase Tailor.

Kroupova, A.Ivascu, A.Reimao-Pinto, M.M.Ameres, S.L.Jinek, M.

(2019) Nucleic Acids Res 47: 1030-1042

  • DOI: 10.1093/nar/gky1164
  • Primary Citation of Related Structures:  
    6I0V, 6I0U, 6I0T, 6I0S

  • PubMed Abstract: 
  • Non-templated 3'-uridylation of RNAs has emerged as an important mechanism for regulating the processing, stability and biological function of eukaryotic transcripts. In Drosophila, oligouridine tailing by the terminal uridylyl transferase (TUTase) Tailor of numerous RNAs induces their degradation by the exonuclease Dis3L2, which serves functional roles in RNA surveillance and mirtron RNA biogenesis ...

    Non-templated 3'-uridylation of RNAs has emerged as an important mechanism for regulating the processing, stability and biological function of eukaryotic transcripts. In Drosophila, oligouridine tailing by the terminal uridylyl transferase (TUTase) Tailor of numerous RNAs induces their degradation by the exonuclease Dis3L2, which serves functional roles in RNA surveillance and mirtron RNA biogenesis. Tailor preferentially uridylates RNAs terminating in guanosine or uridine nucleotides but the structural basis underpinning its RNA substrate selectivity is unknown. Here, we report crystal structures of Tailor bound to a donor substrate analog or mono- and oligouridylated RNA products. These structures reveal specific amino acid residues involved in donor and acceptor substrate recognition, and complementary biochemical assays confirm the critical role of an active site arginine in conferring selectivity toward 3'-guanosine terminated RNAs. Notably, conservation of these active site features suggests that other eukaryotic TUTases, including mammalian TUT4 and TUT7, might exhibit similar, hitherto unknown, substrate selectivity. Together, these studies provide critical insights into the specificity of 3'-uridylation in eukaryotic post-transcriptional gene regulation.


    Organizational Affiliation

    Department of Biochemistry, University of Zurich, Zurich 8057, Switzerland.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Terminal uridylyltransferase TailorA384Drosophila melanogasterMutation(s): 0 
Gene Names: TailorCG1091
EC: 2.7.7.52
Find proteins for Q9VI58 (Drosophila melanogaster)
Explore Q9VI58 
Go to UniProtKB:  Q9VI58
Protein Feature View
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  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 2
    MoleculeChainsLengthOrganismImage
    RNA (5'-R(*GP*U)-3')B2Drosophila melanogaster
    Protein Feature View
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    • Reference Sequence
    Experimental Data & Validation

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 2.00 Å
    • R-Value Free: 0.233 
    • R-Value Work: 0.204 
    • R-Value Observed: 0.206 
    • Space Group: P 31 2 1
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 60.425α = 90
    b = 60.425β = 90
    c = 162.284γ = 120
    Software Package:
    Software NamePurpose
    PHENIXrefinement
    XDSdata reduction
    Cootmodel building
    PHASERphasing
    XDSdata scaling

    Structure Validation

    View Full Validation Report



    Entry History 

    Deposition Data

    Revision History  (Full details and data files)

    • Version 1.0: 2018-12-05
      Type: Initial release
    • Version 1.1: 2019-02-06
      Changes: Data collection, Database references