6IZ8

Crystal Structure of TagF from Pseudomonas aeruginosa


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.204 

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This is version 1.1 of the entry. See complete history


Literature

Crystal Structure of the Type VI Secretion System Accessory Protein TagF from Pseudomonas Aeruginosa.

Ok, C.K.Chang, J.H.

(2019) Protein Pept Lett 26: 204-214

  • DOI: 10.2174/0929866526666190119121859
  • Primary Citation of Related Structures:  
    6IZ8

  • PubMed Abstract: 
  • Type VI Secretion System (T6SS) has been found in approximately onequarter of the gram-negative bacterial species, and its structural characteristics appear to slightly differ from species to species. The genes encoding T6SS are designated as type six secretion A-M (tssA-M) ...

    Type VI Secretion System (T6SS) has been found in approximately onequarter of the gram-negative bacterial species, and its structural characteristics appear to slightly differ from species to species. The genes encoding T6SS are designated as type six secretion A-M (tssA-M). The expression of the tss gene cluster is regulated by various accessory genes, designated as type VI-associated genes A-P (tagA-P). Tag family proteins have been commonly found in bacteria expressing T6SS but not in all bacterial species. For instance, the tag gene cluster is well-conserved in Pseudomonas aeruginosa (Pa). The PaTagF protein has large homology with ImpM in Rhizobium leguminosarum and SciT in Salmonella enterica. The overexpression of PaTagF represses T6SS complex accumulation and suppresses T6SS antibacterial activity. Thus, the functions of TagF are mediated through direct interactions with the forkhead-associated protein Fha, as evident from the results of the yeast-two hybrid assays. Fha is involved in recruiting a membrane-associated complex either in threonine phosphorylation pathway-dependent or - independent manner. However, functional reports of the tag gene cluster are still limited.


    Organizational Affiliation

    Department of Biology Education, Kyungpook National University, Daegu 41566, South Korea.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Type VI secretion-associated protein ABCDF247Pseudomonas aeruginosaMutation(s): 0 
Gene Names: CAZ10_15570
Find proteins for Q9I756 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore Q9I756 
Go to UniProtKB:  Q9I756
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.204 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 93.719α = 90
b = 92.386β = 90
c = 151.136γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

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Entry History & Funding Information

Deposition Data

  • Deposited Date: 2018-12-18 
  • Released Date: 2019-12-18 
  • Deposition Author(s): Chang, J.H., Ok, C.K.

Funding OrganizationLocationGrant Number
National Research Foundation (Korea)Korea, Republic Of--

Revision History  (Full details and data files)

  • Version 1.0: 2019-12-18
    Type: Initial release
  • Version 1.1: 2020-05-06
    Changes: Database references