6AOZ

Crystal structure of human FLASH N-terminal domain C54S/C83A (Crystal form 1)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.215 
  • R-Value Observed: 0.217 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

The N-terminal domains of FLASH and Lsm11 form a 2:1 heterotrimer for histone pre-mRNA 3'-end processing.

Aik, W.S.Lin, M.H.Tan, D.Tripathy, A.Marzluff, W.F.Dominski, Z.Chou, C.Y.Tong, L.

(2017) PLoS One 12: e0186034-e0186034

  • DOI: https://doi.org/10.1371/journal.pone.0186034
  • Primary Citation of Related Structures:  
    6ANO, 6AOZ, 6AP0

  • PubMed Abstract: 

    Unlike canonical pre-mRNAs, animal replication-dependent histone pre-mRNAs lack introns and are processed at the 3'-end by a mechanism distinct from cleavage and polyadenylation. They have a 3' stem loop and histone downstream element (HDE) that are recognized by stem-loop binding protein (SLBP) and U7 snRNP, respectively. The N-terminal domain (NTD) of Lsm11, a component of U7 snRNP, interacts with FLASH NTD and these two proteins recruit the histone cleavage complex containing the CPSF-73 endonuclease for the cleavage reaction. Here, we determined crystal structures of FLASH NTD and found that it forms a coiled-coil dimer. Using solution light scattering, we characterized the stoichiometry of the FLASH NTD-Lsm11 NTD complex and found that it is a 2:1 heterotrimer, which is supported by observations from analytical ultracentrifugation and crosslinking.


  • Organizational Affiliation

    Department of Biological Sciences, Columbia University, New York, New York, United States of America.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
CASP8-associated protein 2A [auth B],
B [auth A],
C [auth D],
D [auth C]
96Homo sapiensMutation(s): 3 
Gene Names: CASP8AP2FLASHKIAA1315RIP25
UniProt & NIH Common Fund Data Resources
Find proteins for Q9UKL3 (Homo sapiens)
Explore Q9UKL3 
Go to UniProtKB:  Q9UKL3
PHAROS:  Q9UKL3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9UKL3
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.215 
  • R-Value Observed: 0.217 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 39.281α = 95.58
b = 41.086β = 105.18
c = 60.951γ = 113.4
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-11-15
    Type: Initial release
  • Version 1.1: 2023-10-04
    Changes: Data collection, Database references, Refinement description