5Z4A

Structure of Tailor in complex with AGU RNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.64 Å
  • R-Value Free: 0.191 
  • R-Value Work: 0.157 
  • R-Value Observed: 0.159 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Literature

Structural insights into a unique preference for 3' terminal guanine of mirtron in Drosophila TUTase tailor.

Cheng, L.Li, F.Jiang, Y.Yu, H.Xie, C.Shi, Y.Gong, Q.

(2019) Nucleic Acids Res 47: 495-508

  • DOI: https://doi.org/10.1093/nar/gky1116
  • Primary Citation of Related Structures:  
    5Z4A, 5Z4C, 5Z4D, 5Z4J, 5Z4M

  • PubMed Abstract: 

    Terminal uridylyl transferase (TUTase) is one type of enzyme that modifies RNA molecules by facilitating the post-transcriptional addition of uridyl ribonucleotides to their 3' ends. Recent researches have reported that Drosophila TUTase, Tailor, exhibits an intrinsic preference for RNA substrates ending in 3'G, distinguishing it from any other known TUTases. Through this unique feature, Tailor plays a crucial role as the repressor in the biogenesis pathway of splicing-derived mirtron pre-miRNAs. Here we describe crystal structures of core catalytic domain of Tailor and its complexes with RNA stretches 5'-AGU-3' and 5'-AGUU-3'. We demonstrate that R327 and N347 are two key residues contributing cooperatively to Tailor's preference for 3'G, and R327 may play an extra role in facilitating the extension of polyuridylation chain. We also demonstrate that conformational stability of the exit of RNA-binding groove also contributes significantly to Tailor's activity. Overall, our work reveals useful insights to explain why Drosophila Tailor can preferentially select RNA substrates ending in 3'G and provides important values for further understanding the biological significances of biogenesis pathway of mirtron in flies.


  • Organizational Affiliation

    Hefei National Laboratory for Physical Science at the Microscale, School of Life Sciences, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230027, China.


Macromolecules

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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Terminal uridylyltransferase TailorB [auth A]351Drosophila melanogasterMutation(s): 0 
Gene Names: TailorCG1091
EC: 2.7.7.52
UniProt
Find proteins for Q9VI58 (Drosophila melanogaster)
Explore Q9VI58 
Go to UniProtKB:  Q9VI58
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9VI58
Sequence Annotations
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  • Reference Sequence

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Entity ID: 1
MoleculeChains LengthOrganismImage
RNA (5'-R(*AP*GP*U)-3')A [auth B]3Drosophila melanogaster
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.64 Å
  • R-Value Free: 0.191 
  • R-Value Work: 0.157 
  • R-Value Observed: 0.159 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 61.717α = 90
b = 84.944β = 90
c = 148.262γ = 90
Software Package:
Software NamePurpose
HKL-2000data scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
PHASESphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-10-31
    Type: Initial release
  • Version 1.1: 2018-12-19
    Changes: Data collection, Database references
  • Version 1.2: 2019-01-23
    Changes: Data collection, Database references
  • Version 1.3: 2023-11-22
    Changes: Data collection, Database references, Refinement description