5B16

X-ray structure of DROSHA in complex with the C-terminal tail of DGCR8.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.300 
  • R-Value Work: 0.267 

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Literature

Structure of Human DROSHA

Kwon, S.C.Nguyen, T.A.Choi, Y.G.Jo, M.H.Hohng, S.Kim, V.N.Woo, J.S.

(2016) Cell 164: 81-90

  • DOI: 10.1016/j.cell.2015.12.019
  • Primary Citation of Related Structures:  
    5B16

  • PubMed Abstract: 
  • MicroRNA maturation is initiated by RNase III DROSHA that cleaves the stem loop of primary microRNA. DROSHA functions together with its cofactor DGCR8 in a heterotrimeric complex known as Microprocessor. Here, we report the X-ray structure of DROSHA ...

    MicroRNA maturation is initiated by RNase III DROSHA that cleaves the stem loop of primary microRNA. DROSHA functions together with its cofactor DGCR8 in a heterotrimeric complex known as Microprocessor. Here, we report the X-ray structure of DROSHA in complex with the C-terminal helix of DGCR8. We find that DROSHA contains two DGCR8-binding sites, one on each RNase III domain (RIIID), which mediate the assembly of Microprocessor. The overall structure of DROSHA is surprisingly similar to that of Dicer despite no sequence homology apart from the C-terminal part, suggesting that DROSHA may have evolved from a Dicer homolog. DROSHA exhibits unique features, including non-canonical zinc-finger motifs, a long insertion in the first RIIID, and the kinked link between Connector helix and RIIID, which explains the 11-bp-measuring "ruler" activity of DROSHA. Our study implicates the evolutionary origin of DROSHA and elucidates the molecular basis of Microprocessor assembly and primary microRNA processing.


    Organizational Affiliation

    Center for RNA Research, Institute for Basic Science, Seoul 08826, Korea; School of Biological Sciences, Seoul National University, Seoul 08826, Korea. Electronic address: jaesungwoo@snu.ac.kr.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Ribonuclease 3,DROSHA,Ribonuclease 3,DROSHA,Ribonuclease 3A986Homo sapiensMutation(s): 2 
Gene Names: DROSHARN3RNASE3LRNASEN
EC: 3.1.26.3
Find proteins for Q9NRR4 (Homo sapiens)
Explore Q9NRR4 
Go to UniProtKB:  Q9NRR4
NIH Common Fund Data Resources
PHAROS  Q9NRR4
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Microprocessor complex subunit DGCR8BC39Homo sapiensMutation(s): 0 
Gene Names: DGCR8C22orf12DGCRK6LP4941
Find proteins for Q8WYQ5 (Homo sapiens)
Explore Q8WYQ5 
Go to UniProtKB:  Q8WYQ5
NIH Common Fund Data Resources
PHAROS  Q8WYQ5
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.300 
  • R-Value Work: 0.267 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 117.254α = 90
b = 118.136β = 102.07
c = 122.296γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
HKL-2000data reduction
PHENIXphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Institute for Basic ScienceKorea, Republic OfIBS-R008-D1

Revision History 

  • Version 1.0: 2016-02-03
    Type: Initial release