4N49

Cap-specific mRNA (nucleoside-2'-O-)-methyltransferase 1 Protein in complex with m7GpppG and SAM


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.154 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural analysis of human 2'-O-ribose methyltransferases involved in mRNA cap structure formation.

Smietanski, M.Werner, M.Purta, E.Kaminska, K.H.Stepinski, J.Darzynkiewicz, E.Nowotny, M.Bujnicki, J.M.

(2014) Nat Commun 5: 3004-3004

  • DOI: 10.1038/ncomms4004
  • Primary Citation of Related Structures:  4N4A, 4N48

  • PubMed Abstract: 
  • The 5' cap of human messenger RNA contains 2'-O-methylation of the first and often second transcribed nucleotide that is important for its processing, translation and stability. Human enzymes that methylate these nucleotides, termed CMTr1 and CMTr2, ...

    The 5' cap of human messenger RNA contains 2'-O-methylation of the first and often second transcribed nucleotide that is important for its processing, translation and stability. Human enzymes that methylate these nucleotides, termed CMTr1 and CMTr2, respectively, have recently been identified. However, the structures of these enzymes and their mechanisms of action remain unknown. In the present study, we solve the crystal structures of the active CMTr1 catalytic domain in complex with a methyl group donor and a capped oligoribonucleotide, thereby revealing the mechanism of specific recognition of capped RNA. This mechanism differs significantly from viral enzymes, thus providing a framework for their specific targeting. Based on the crystal structure of CMTr1, a comparative model of the CMTr2 catalytic domain is generated. This model, together with mutational analysis, leads to the identification of residues involved in RNA and methyl group donor binding.


    Organizational Affiliation

    1] Laboratory of Bioinformatics and Protein Engineering, International Institute of Molecular and Cell Biology in Warsaw, ul. ks. Trojdena 4, PL-02-109 Warsaw, Poland [2] Laboratory of Protein Structure, International Institute of Molecular and Cell Biology in Warsaw, ul. ks. Trojdena 4, PL-02-109 Warsaw, Poland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cap-specific mRNA (nucleoside-2'-O-)-methyltransferase 1
A
428Homo sapiensGene Names: CMTR1 (FTSJD2, KIAA0082, MTR1)
EC: 2.1.1.57
Find proteins for Q8N1G2 (Homo sapiens)
Go to Gene View: CMTR1
Go to UniProtKB:  Q8N1G2
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MGT
Query on MGT

Download SDF File 
Download CCD File 
A
7N-METHYL-8-HYDROGUANOSINE-5'-TRIPHOSPHATE
C11 H20 N5 O14 P3
BUJQMJUTTBGELS-KQYNXXCUSA-N
 Ligand Interaction
NA
Query on NA

Download SDF File 
Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
SAM
Query on SAM

Download SDF File 
Download CCD File 
A
S-ADENOSYLMETHIONINE
C15 H22 N6 O5 S
MEFKEPWMEQBLKI-FCKMPRQPSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.154 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 50.834α = 90.00
b = 87.619β = 112.89
c = 57.310γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
MAR345data collection
PHENIXrefinement
XDSdata reduction
XDSdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-01-22
    Type: Initial release
  • Version 1.1: 2017-11-15
    Type: Refinement description