5W4U

Pol II elongation complex with an N6-methyladenine-containing template


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.60 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.227 
  • R-Value Observed: 0.229 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Epigenetic DNA Modification N6-Methyladenine Causes Site-Specific RNA Polymerase II Transcriptional Pausing.

Wang, W.Xu, L.Hu, L.Chong, J.He, C.Wang, D.

(2017) J Am Chem Soc 139: 14436-14442

  • DOI: 10.1021/jacs.7b06381
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • N 6 -Methyladenine (N 6 -mA or 6 mA) is an epigenetic DNA modification in eukaryotic genomes. In contrast to the well-established roles of 5-methylcytosine for epigenetic regulation of gene expression, the functional roles of N ...

    N 6 -Methyladenine (N 6 -mA or 6 mA) is an epigenetic DNA modification in eukaryotic genomes. In contrast to the well-established roles of 5-methylcytosine for epigenetic regulation of gene expression, the functional roles of N 6 -mA remain elusive. In particular, the impact of N 6 -mA modification of the DNA template on RNA polymerase II (pol II) transcription elongation is not known. In this work, using the Saccharomyces cerevisiae pol II transcriptional elongation system as a model, we investigated the molecular mechanism of pol II recognition and processing of N 6 -mA sites via both biochemical and structural approaches. We found that N 6 -mA causes site-specific pol II pausing/stalling. Structural analysis revealed that while N 6 -mA can reach the +1 template position, the stability of the N 6 -mA and UTP base pairing is compromised. Taken together, we reveal that the presence of the 6-methyl group on adenine reduces incorporation efficiency and promotes backtracking translocation. Our studies with yeast pol II provide molecular insights into understanding the impacts of N 6 -mA on pol II transcription dynamics in different organisms.


    Organizational Affiliation

    Department of Chemistry and Institute for Biophysical Dynamics, Howard Hughes Medical Institute, The University of Chicago , Chicago, Illinois 60637, United States.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerase II subunit RPB1A1733Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPO21RPB1RPB220SUA8YDL140CD2150
EC: 2.7.7.6
Find proteins for P04050 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerase II subunit RPB2B1224Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPB2RPB150RPO22YOR151C
EC: 2.7.7.6
Find proteins for P08518 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerase II subunit RPB3C318Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPB3YIL021W
Find proteins for P16370 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerases I, II, and III subunit RPABC1E215Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPB5RPA7RPC9YBR154CYBR1204
Find proteins for P20434 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerases I, II, and III subunit RPABC2F155Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPO26RPB6YPR187WP9677.8
Find proteins for P20435 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerases I, II, and III subunit RPABC3H146Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPB8YOR224CYOR50-14
Find proteins for P20436 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerase II subunit RPB9I122Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPB9YGL070C
Find proteins for P27999 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerases I, II, and III subunit RPABC5J70Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPB10YOR210W
Find proteins for P22139 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerase II subunit RPB11K120Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPB11YOL005C
Find proteins for P38902 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 10
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerases I, II, and III subunit RPABC4L70Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPC10RPB12YHR143W-AYHR143BW
Find proteins for P40422 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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  • Reference Sequence

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Entity ID: 11
MoleculeChainsLengthOrganism
29mer template DNAT29Saccharomyces cerevisiae
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Entity ID: 12
MoleculeChainsLengthOrganism
14mer non-template DNAN14Saccharomyces cerevisiae
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Entity ID: 13
MoleculeChainsLengthOrganism
9mer RNAR9Saccharomyces cerevisiae
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

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A, B, C, I, J, L
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

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A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.60 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.227 
  • R-Value Observed: 0.229 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 167.21α = 90
b = 221.99β = 100.58
c = 192.7γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling
PHENIXphasing

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2017-06-13 
  • Released Date: 2018-06-20 
  • Deposition Author(s): Wang, W., Wang, D.

Revision History 

  • Version 1.0: 2018-06-20
    Type: Initial release
  • Version 1.1: 2019-07-03
    Changes: Data collection, Database references