5W0O

Structure of human TUT7 catalytic module (CM) in complex with dsRNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.488 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.205 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Multi-domain utilization by TUT4 and TUT7 in control of let-7 biogenesis.

Faehnle, C.R.Walleshauser, J.Joshua-Tor, L.

(2017) Nat. Struct. Mol. Biol. 24: 658-665

  • DOI: 10.1038/nsmb.3428
  • Primary Citation of Related Structures:  5W0B, 5W0M, 5W0N

  • PubMed Abstract: 
  • The uridyl transferases TUT4 and TUT7 (collectively called TUT4(7)) switch between two modes of activity, either promoting expression of let-7 microRNA (monoU) or marking it for degradation (oligoU). Lin28 modulates the switch via recruitment of TUT4 ...

    The uridyl transferases TUT4 and TUT7 (collectively called TUT4(7)) switch between two modes of activity, either promoting expression of let-7 microRNA (monoU) or marking it for degradation (oligoU). Lin28 modulates the switch via recruitment of TUT4(7) to the precursor pre-let-7 in stem cells and human cancers. We found that TUT4(7) utilize two multidomain functional modules during the switch from monoU to oligoU. The catalytic module (CM) is essential for both activities, while the Lin28-interacting module (LIM) is indispensable for oligoU. A TUT7 CM structure trapped in the monoU activity staterevealed a duplex-RNA-binding pocket that orients group II pre-let-7 hairpins to favor monoU addition. Conversely, the switch to oligoU requires the ZK domain of Lin28 to drive the formation of a stable ternary complex between pre-let-7 and the inactive LIM. Finally, ZK2 of TUT4(7) aids oligoU addition by engaging the growing oligoU tail through uracil-specific interactions.


    Organizational Affiliation

    W.M. Keck Structural Biology Laboratory, Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Terminal uridylyltransferase 7
A, B
389Homo sapiensGene Names: ZCCHC6 (HS2, KIAA1711, TUT7)
EC: 2.7.7.52
Find proteins for Q5VYS8 (Homo sapiens)
Go to Gene View: ZCCHC6
Go to UniProtKB:  Q5VYS8
Entity ID: 2
MoleculeChainsLengthOrganism
double-stranded RNAC,D15synthetic construct
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
UTP
Query on UTP

Download SDF File 
Download CCD File 
A, B
URIDINE 5'-TRIPHOSPHATE
C9 H15 N2 O15 P3
PGAVKCOVUIYSFO-XVFCMESISA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.488 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.205 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 66.825α = 90.00
b = 80.851β = 90.00
c = 181.830γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
SCALAdata scaling
XDSdata reduction
PHASERphasing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-06-28
    Type: Initial release
  • Version 1.1: 2017-07-19
    Type: Database references
  • Version 1.2: 2017-08-16
    Type: Database references