5G23

Type IV-like pilin TTHA1219 from Thermus thermophilus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.180 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structures of Type Iv Pilins from Thermus Thermophilus Demonstrate Similarities with Type II Secretion System Pseudopilins

Karuppiah, V.Thistlethwaite, A.Derrick, J.P.

(2016) J.Struct.Biol. 196: 375

  • DOI: 10.1016/j.jsb.2016.08.006
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Type IV pilins are proteins which form polymers that extend from the surface of the bacterial cell; they are involved in mediating a wide variety of functions, including adhesion, motility and natural competence. Here we describe the determination of ...

    Type IV pilins are proteins which form polymers that extend from the surface of the bacterial cell; they are involved in mediating a wide variety of functions, including adhesion, motility and natural competence. Here we describe the determination of the crystal structures of three type IVa pilins proteins from the thermophile Thermus thermophilus. They form part of a cluster of pilus-like proteins within the genome; our results show that one, Tt1222, is very closely related to the main structural type IV pilin, PilA4. The other two, Tt1218 and Tt1219, also adopt canonical pilin-like folds but, interestingly, are most closely related to the structures of the type II secretion system pseudopilins, EpsI/GspI and XcpW/GspJ. GspI and GspJ have been shown to form a complex with another pseudopilin, GspK, and this heterotrimeric complex is known to play a key role in initiating assembly of a pseudopilus which is thought to drive the secretion process. The structural similarity of Tt1218 and Tt1219 to GspI and GspJ suggests that they might work in a similar way, to deliver functions associated with type IV pili in T. thermophilus, such as natural competence.


    Organizational Affiliation

    Michael Smith Building, Faculty of Life Sciences, University of Manchester, Oxford Road, Manchester, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TYPE-IV LIKE PILIN TTHA1219
A, B, C, D
236Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Find proteins for Q5SIZ5 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SIZ5
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.180 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 65.400α = 90.00
b = 66.950β = 99.14
c = 97.470γ = 90.00
Software Package:
Software NamePurpose
autoSHARPmodel building
XSCALEdata scaling
AutoSolphasing
XDSdata reduction
REFMACrefinement
autoSHARPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-09-14
    Type: Initial release
  • Version 1.1: 2016-09-28
    Type: Database references
  • Version 1.2: 2016-12-07
    Type: Database references