8OPS

Human terminal uridylyltransferase 7 (TUT7/ZCCHC6) bound with pre-let7g miRNA and Lin28A - complex 1


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.82 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural basis for activity switching in polymerases determining the fate of let-7 pre-miRNAs.

Yi, G.Ye, M.Carrique, L.El-Sagheer, A.Brown, T.Norbury, C.J.Zhang, P.Gilbert, R.J.C.

(2024) Nat Struct Mol Biol 31: 1426-1438

  • DOI: https://doi.org/10.1038/s41594-024-01357-9
  • Primary Citation of Related Structures:  
    8OEF, 8OPP, 8OPS, 8OPT, 8OST

  • PubMed Abstract: 

    Tumor-suppressor let-7 pre-microRNAs (miRNAs) are regulated by terminal uridylyltransferases TUT7 and TUT4 that either promote let-7 maturation by adding a single uridine nucleotide to the pre-miRNA 3' end or mark them for degradation by the addition of multiple uridines. Oligo-uridylation is increased in cells by enhanced TUT7/4 expression and especially by the RNA-binding pluripotency factor LIN28A. Using cryogenic electron microscopy, we captured high-resolution structures of active forms of TUT7 alone, of TUT7 plus pre-miRNA and of both TUT7 and TUT4 bound with pre-miRNA and LIN28A. Our structures reveal that pre-miRNAs engage the enzymes in fundamentally different ways depending on the presence of LIN28A, which clamps them onto the TUTs to enable processive 3' oligo-uridylation. This study reveals the molecular basis for mono- versus oligo-uridylation by TUT7/4, as determined by the presence of LIN28A, and thus their mechanism of action in the regulation of cell fate and in cancer.


  • Organizational Affiliation

    Division of Structural Biology, Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford, UK.


Macromolecules

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Terminal uridylyltransferase 71,495Homo sapiensMutation(s): 0 
Gene Names: TUT7HS2KIAA1711ZCCHC6
EC: 2.7.7.52
UniProt & NIH Common Fund Data Resources
Find proteins for Q5VYS8 (Homo sapiens)
Explore Q5VYS8 
Go to UniProtKB:  Q5VYS8
PHAROS:  Q5VYS8
GTEx:  ENSG00000083223 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5VYS8
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Protein lin-28 homolog A209Homo sapiensMutation(s): 0 
Gene Names: LIN28ACSDD1LIN28ZCCHC1
UniProt & NIH Common Fund Data Resources
Find proteins for Q9H9Z2 (Homo sapiens)
Explore Q9H9Z2 
Go to UniProtKB:  Q9H9Z2
PHAROS:  Q9H9Z2
GTEx:  ENSG00000131914 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9H9Z2
Sequence Annotations
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  • Reference Sequence
Find similar nucleic acids by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains LengthOrganismImage
RNA (71-MER) Let7g71Homo sapiens
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download Ideal Coordinates CCD File 
D [auth B]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.82 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Wellcome TrustUnited Kingdom--

Revision History  (Full details and data files)

  • Version 1.0: 2024-07-24
    Type: Initial release
  • Version 1.1: 2024-08-07
    Changes: Data collection, Database references
  • Version 1.2: 2024-09-25
    Changes: Data collection, Database references