5L6D

Crystal structure of the human METTL3-METTL14 complex bound to SAH


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.852 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.157 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structural insights into the molecular mechanism of the m(6)A writer complex.

Sledz, P.Jinek, M.

(2016) Elife 5: --

  • DOI: 10.7554/eLife.18434
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Methylation of adenosines at the N(6) position (m(6)A) is a dynamic and abundant epitranscriptomic mark that regulates critical aspects of eukaryotic RNA metabolism in numerous biological processes. The RNA methyltransferases METTL3 and METTL14 are c ...

    Methylation of adenosines at the N(6) position (m(6)A) is a dynamic and abundant epitranscriptomic mark that regulates critical aspects of eukaryotic RNA metabolism in numerous biological processes. The RNA methyltransferases METTL3 and METTL14 are components of a multisubunit m(6)A writer complex whose enzymatic activity is substantially higher than the activities of METTL3 or METTL14 alone. The molecular mechanism underpinning this synergistic effect is poorly understood. Here we report the crystal structure of the catalytic core of the human m(6)A writer complex comprising METTL3 and METTL14. The structure reveals the heterodimeric architecture of the complex and donor substrate binding by METTL3. Structure-guided mutagenesis indicates that METTL3 is the catalytic subunit of the complex, whereas METTL14 has a degenerate active site and plays non-catalytic roles in maintaining complex integrity and substrate RNA binding. These studies illuminate the molecular mechanism and evolutionary history of eukaryotic m(6)A modification in post-transcriptional genome regulation.


    Organizational Affiliation

    Department of Biochemistry, University of Zurich, Zurich, Switzerland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
N6-adenosine-methyltransferase 70 kDa subunit
A
227Homo sapiensMutation(s): 0 
Gene Names: METTL3 (MTA70)
EC: 2.1.1.348
Find proteins for Q86U44 (Homo sapiens)
Go to Gene View: METTL3
Go to UniProtKB:  Q86U44
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
N6-adenosine-methyltransferase subunit METTL14
B
289Homo sapiensMutation(s): 0 
Gene Names: METTL14 (KIAA1627)
Find proteins for Q9HCE5 (Homo sapiens)
Go to Gene View: METTL14
Go to UniProtKB:  Q9HCE5
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ACT
Query on ACT

Download SDF File 
Download CCD File 
B
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
SAH
Query on SAH

Download SDF File 
Download CCD File 
A
S-ADENOSYL-L-HOMOCYSTEINE
C14 H20 N6 O5 S
ZJUKTBDSGOFHSH-WFMPWKQPSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.852 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.157 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 63.822α = 90.00
b = 63.822β = 90.00
c = 225.626γ = 120.00
Software Package:
Software NamePurpose
XDSdata reduction
PHENIXrefinement
PHASERphasing
XDSdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2016-05-29 
  • Released Date: 2016-10-12 
  • Deposition Author(s): Sledz, P., Jinek, M.

Revision History 

  • Version 1.0: 2016-10-12
    Type: Initial release