1AV6

VACCINIA METHYLTRANSFERASE VP39 COMPLEXED WITH M7G CAPPED RNA HEXAMER AND S-ADENOSYLHOMOCYSTEINE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.215 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis for sequence-nonspecific recognition of 5'-capped mRNA by a cap-modifying enzyme.

Hodel, A.E.Gershon, P.D.Quiocho, F.A.

(1998) Mol.Cell 1: 443-447


  • PubMed Abstract: 
  • Sequence-nonspecific binding of RNA, recognition of a 7-methylguanosine 5' mRNA cap, and methylation of a nucleic acid backbone are three crucial and ubiquitous events in eukaryotic nucleic acid processing and function. These three events occur concu ...

    Sequence-nonspecific binding of RNA, recognition of a 7-methylguanosine 5' mRNA cap, and methylation of a nucleic acid backbone are three crucial and ubiquitous events in eukaryotic nucleic acid processing and function. These three events occur concurrently in the modification of vaccinia transcripts by the methyltransferase VP39. We report the crystal structure of a ternary complex comprising VP39, coenzyme product S-adenosylhomocysteine, and a 5' m7 G-capped, single-stranded RNA hexamer. This structure reveals a novel and general mechanism for sequence-non-specific recognition of the mRNA transcript in which the protein interacts solely with the sugar-phosphate backbone of a short, single-stranded RNA helix. This report represents the first direct and detailed view of a protein complexed with single-stranded RNA or 5'-capped mRNA.


    Organizational Affiliation

    Howard Hughes Medical Institute, Department of Biochemistry, Baylor College of Medicine, Houston, Texas 77030, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Cap-specific mRNA (nucleoside-2'-O-)-methyltransferase
A
295Vaccinia virus (strain Western Reserve)Gene Names: PAPS
EC: 2.1.1.57
Find proteins for P07617 (Vaccinia virus (strain Western Reserve))
Go to UniProtKB:  P07617
Entity ID: 1
MoleculeChainsLengthOrganism
RNA (5'-R(*GP*AP*AP*AP*AP*A)-3')B6N/A
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MGT
Query on MGT

Download SDF File 
Download CCD File 
B
7N-METHYL-8-HYDROGUANOSINE-5'-TRIPHOSPHATE
C11 H20 N5 O14 P3
BUJQMJUTTBGELS-KQYNXXCUSA-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: 2.8 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.215 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 61.800α = 90.00
b = 64.600β = 90.00
c = 99.500γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
SMARTdata reduction
SAINTdata scaling
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-02-25
    Type: Initial release
  • Version 1.1: 2008-05-22
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance