3ERC

Crystal structure of the heterodimeric vaccinia virus mRNA polyadenylate polymerase with three fragments of RNA and 3'-deoxy ATP

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.21 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.245 
  • R-Value Observed: 0.245 

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Literature

Polymerase Translocation with Respect to Single-Stranded Nucleic Acid: Looping or Wrapping of Primer around a Poly(A) Polymerase

Li, C., Li, H., Zhou, S., Sun, E., Yoshizawa, J., Poulos, T.L., Gershon, P.D.

(2009) Structure 17: 680-689

  • DOI: 10.1016/j.str.2009.03.012
  • Primary Citation of Related Structures:  
    3ER8, 3ER9, 3ERC

  • PubMed Abstract: 

    • Vaccinia virus protein VP55 translocates continuously with respect to single-stranded nucleic acid while extending its 3'end. Here, all key sites of polymerase-primer interaction were identified, demonstrating the wrapping or looping of polyadenylation primer around the polymerase during translocation ...

    Vaccinia virus protein VP55 translocates continuously with respect to single-stranded nucleic acid while extending its 3'end. Here, all key sites of polymerase-primer interaction were identified, demonstrating the wrapping or looping of polyadenylation primer around the polymerase during translocation. Side-chain substitutions at one of the sites indicated its requirement for tail extension beyond approximately 12 nucleotides in length, and conformational changes observed upon oligonucleotide binding suggested allosteric connectivity during translocation. Conformational changes in VP39 upon VP55 binding suggested that, within the VP55-VP39 complex, VP39's mRNA 5' cap binding site closes. The crystallographic structure showed a PAPase catalytic center without side-chain substitutions, possessing two metal ions and with all known reactive and catalytic groups represented, fitting a classical two-metal ion mechanism for phosphoryl transfer.

    Related Citations: 
    • Crystal structure of the vaccinia virus polyadenylate polymerase heterodimer: insight into ATP selecttivity and processivity
      Moure, C.M., Bowman, B.R., Gershon, P.D., Quiocho, F.A.
      (2006) Mol Cell 22: 339
    Organizational Affiliation: 

    Department of Chemistry, Xinxiang Medical University, Xinxiang, Henan, PR China.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Cap-specific mRNA (nucleoside-2'-O-)-methyltransferaseA, B297Vaccinia virus WRMutation(s): 3 
Gene Names: PAPS, VACWR095, F9, J3R
EC: 2.1.1.57
UniProt
Find proteins for P07617 (Vaccinia virus (strain Western Reserve))
Explore P07617 
Go to UniProtKB:  P07617
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UniProt GroupP07617
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Poly(A) polymerase catalytic subunitC, D479Vaccinia virus WRMutation(s): 1 
Gene Names: PAPL, VACWR057, E1L
EC: 2.7.7.19
UniProt
Find proteins for P23371 (Vaccinia virus (strain Western Reserve))
Explore P23371 
Go to UniProtKB:  P23371
Entity Groups  
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UniProt GroupP23371
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  • Reference Sequence

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Entity ID: 3
MoleculeChainsLengthOrganismImage
RNA/DNA chimera (5'-D(CP*)R(UP*UP*)D(CP*C)-3')E, F 5N/A
Protein Feature View
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Entity ID: 4
MoleculeChainsLengthOrganismImage
RNA/DNA chimera (5'-D(CP*)R(UP*UP*)-D(C)-3')G 4N/A
Protein Feature View
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  • Reference Sequence

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Entity ID: 5
MoleculeChainsLengthOrganismImage
RNA/DNA chimera (5'-D(CP*CP*)R(UP*UP*)D(C)-3')H [auth I]5N/A
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.21 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.245 
  • R-Value Observed: 0.245 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.925α = 89.52
b = 77.153β = 73.45
c = 108.03γ = 63.76
Software Package:
Software NamePurpose
ADSCdata collection
PHASERphasing
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-06-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2018-01-24
    Changes: Structure summary
  • Version 1.3: 2021-10-20
    Changes: Database references, Derived calculations