7AVJ

Streptococcal High Identity Repeats in Tandem (SHIRT) domain 2 from cell surface protein SGO_0707


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.95 Å
  • R-Value Free: 0.133 
  • R-Value Work: 0.125 
  • R-Value Observed: 0.125 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Periscope Proteins are variable-length regulators of bacterial cell surface interactions.

Whelan, F.Lafita, A.Gilburt, J.Degut, C.Griffiths, S.C.Jenkins, H.T.St John, A.N.Paci, E.Moir, J.W.B.Plevin, M.J.Baumann, C.G.Bateman, A.Potts, J.R.

(2021) Proc Natl Acad Sci U S A 118

  • DOI: https://doi.org/10.1073/pnas.2101349118
  • Primary Citation of Related Structures:  
    7AVH, 7AVJ, 7AVK

  • PubMed Abstract: 

    Changes at the cell surface enable bacteria to survive in dynamic environments, such as diverse niches of the human host. Here, we reveal "Periscope Proteins" as a widespread mechanism of bacterial surface alteration mediated through protein length variation. Tandem arrays of highly similar folded domains can form an elongated rod-like structure; thus, variation in the number of domains determines how far an N-terminal host ligand binding domain projects from the cell surface. Supported by newly available long-read genome sequencing data, we propose that this class could contain over 50 distinct proteins, including those implicated in host colonization and biofilm formation by human pathogens. In large multidomain proteins, sequence divergence between adjacent domains appears to reduce interdomain misfolding. Periscope Proteins break this "rule," suggesting that their length variability plays an important role in regulating bacterial interactions with host surfaces, other bacteria, and the immune system.


  • Organizational Affiliation

    Department of Biology, The University of York, YO10 5DD York, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
LPXTG cell wall surface protein88Streptococcus gordonii str. Challis substr. CH1Mutation(s): 0 
Gene Names: SGO_0707
UniProt
Find proteins for A8AW49 (Streptococcus gordonii (strain Challis / ATCC 35105 / BCRC 15272 / CH1 / DL1 / V288))
Explore A8AW49 
Go to UniProtKB:  A8AW49
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA8AW49
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.95 Å
  • R-Value Free: 0.133 
  • R-Value Work: 0.125 
  • R-Value Observed: 0.125 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 21.429α = 90
b = 40.766β = 90
c = 82.469γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XSCALEdata scaling
PDB_EXTRACTdata extraction
XDSdata reduction
Fragonphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Biotechnology and Biological Sciences Research Council (BBSRC)United KingdomBB/J005029/1

Revision History  (Full details and data files)

  • Version 1.0: 2021-06-09
    Type: Initial release
  • Version 1.1: 2021-06-16
    Changes: Database references