5W0B

Structure of human TUT7 catalytic module (CM)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.61 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.232 

wwPDB Validation   3D Report Full Report


This is version 1.4 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:  
    5W0M, 5W0B, 5W0O, 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(7) to the precursor pre-let-7 in stem cells and human cancers ...

    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

    Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Terminal uridylyltransferase 7A, B, C389Homo sapiensMutation(s): 1 
Gene Names: ZCCHC6HS2KIAA1711TUT7
EC: 2.7.7.52
Find proteins for Q5VYS8 (Homo sapiens)
Explore Q5VYS8 
Go to UniProtKB:  Q5VYS8
NIH Common Fund Data Resources
PHAROS:  Q5VYS8
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.61 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.232 
  • Space Group: P 61
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 141.232α = 90
b = 141.232β = 90
c = 174.475γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
Aimlessdata scaling
PDB_EXTRACTdata extraction
XDSdata reduction
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM114147

Revision History  (Full details and data files)

  • Version 1.0: 2017-06-28
    Type: Initial release
  • Version 1.1: 2017-07-19
    Changes: Database references
  • Version 1.2: 2017-08-16
    Changes: Database references
  • Version 1.3: 2017-09-13
    Changes: Author supporting evidence
  • Version 1.4: 2019-11-27
    Changes: Author supporting evidence