5B16

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.300 
  • R-Value Work: 0.267 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

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

  • 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.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ribonuclease 3,DROSHA,Ribonuclease 3,DROSHA,Ribonuclease 3
A
986Homo sapiensMutation(s): 2 
Gene Names: DROSHA (RN3, RNASE3L, RNASEN)
EC: 3.1.26.3
Find proteins for Q9NRR4 (Homo sapiens)
Go to Gene View: DROSHA
Go to UniProtKB:  Q9NRR4
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Microprocessor complex subunit DGCR8
B, C
39Homo sapiensMutation(s): 0 
Gene Names: DGCR8 (C22orf12, DGCRK6)
Find proteins for Q8WYQ5 (Homo sapiens)
Go to Gene View: DGCR8
Go to UniProtKB:  Q8WYQ5
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
UNK
Query on UNK
A
L-PEPTIDE LINKINGC4 H9 N O2

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 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 = 90.00
b = 118.136β = 102.07
c = 122.296γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
SCALEPACKdata scaling
PHENIXphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



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