6BL5

Head decoration protein from the hyperthermophilic phage P74-26


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.69 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.179 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A Hyperthermophilic Phage Decoration Protein Suggests Common Evolutionary Origin with Herpesvirus Triplex Proteins and an Anti-CRISPR Protein.

Stone, N.P.Hilbert, B.J.Hidalgo, D.Halloran, K.T.Lee, J.Sontheimer, E.J.Kelch, B.A.

(2018) Structure 26: 936-947.e3

  • DOI: 10.1016/j.str.2018.04.008

  • PubMed Abstract: 
  • Virus capsids are protein shells that protect the viral genome from environmental assaults, while maintaining the high internal pressure of the tightly packaged genome. To elucidate how capsids maintain stability under harsh conditions, we investigat ...

    Virus capsids are protein shells that protect the viral genome from environmental assaults, while maintaining the high internal pressure of the tightly packaged genome. To elucidate how capsids maintain stability under harsh conditions, we investigated the capsid components of the hyperthermophilic phage P74-26. We determined the structure of capsid protein gp87 and show that it has the same fold as decoration proteins in many other phages, despite lacking significant sequence homology. We also find that gp87 is significantly more stable than mesophilic homologs. Our analysis of the gp87 structure reveals that the core "β tulip" domain is conserved in trimeric capsid components across numerous double-stranded DNA viruses, including Herpesviruses. Moreover, this β barrel domain is found in anti-CRISPR protein AcrIIC1, suggesting a mechanism for the evolution of this Cas9 inhibitor. Our work illustrates the principles for increased stability of gp87, and extends the evolutionary reach of the β tulip domain.


    Organizational Affiliation

    Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01655, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Head decoration protein
A
145Thermus virus P74-26Mutation(s): 0 
Find proteins for A7XXR5 (Thermus virus P74-26)
Go to UniProtKB:  A7XXR5
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.69 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.179 
  • Space Group: P 63
Unit Cell:
Length (Å)Angle (°)
a = 89.516α = 90.00
b = 89.516β = 90.00
c = 31.390γ = 120.00
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-3000data collection
Cootmodel building
HKL-3000data scaling
AutoSolphasing
HKL-3000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
The Pew Charitable TrustsUnited States--

Revision History 

  • Version 1.0: 2018-02-21
    Type: Initial release
  • Version 1.1: 2018-06-06
    Type: Data collection, Database references
  • Version 1.2: 2018-07-18
    Type: Data collection, Database references