4MLO

1.65A resolution structure of ToxT from Vibrio cholerae (P21 Form)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.169 

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This is version 1.3 of the entry. See complete history


Literature

1.65 angstrom resolution structure of the AraC-family transcriptional activator ToxT from Vibrio cholerae.

Li, J.Wehmeyer, G.Lovell, S.Battaile, K.P.Egan, S.M.

(2016) Acta Crystallogr Sect F Struct Biol Cryst Commun 72: 726-731

  • DOI: 10.1107/S2053230X1601298X
  • Primary Citation of Related Structures:  
    4MLO

  • PubMed Abstract: 
  • ToxT is an AraC-family transcriptional activator protein that controls the expression of key virulence factors in Vibrio cholerae, the causative agent of cholera. ToxT directly activates the expression of the genes that encode the toxin-coregulated pilus and cholera toxin, and also positively auto-regulates its own expression from the tcp promoter ...

    ToxT is an AraC-family transcriptional activator protein that controls the expression of key virulence factors in Vibrio cholerae, the causative agent of cholera. ToxT directly activates the expression of the genes that encode the toxin-coregulated pilus and cholera toxin, and also positively auto-regulates its own expression from the tcp promoter. The crystal structure of ToxT has previously been solved at 1.9 Å resolution (PDB entry 3gbg). In this study, a crystal structure of ToxT at 1.65 Å resolution with a similar overall structure to the previously determined structure is reported. However, there are distinct differences between the two structures, particularly in the region that extends from Asp101 to Glu110. This region, which can influence ToxT activity but was disordered in the previous structure, can be traced entirely in the current structure.


    Organizational Affiliation

    Department of Molecular Bioscience, The University of Kansas, 8031 Haworth, 1200 Sunnyside Avenue, Lawrence, KS 66045, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
TCP pilus virulence regulatory proteinA276Vibrio choleraeMutation(s): 0 
Gene Names: toxTtcpND6U24_13630ERS013198_02000ERS013199_00625ERS013200_01425ERS013202_00629ERS013206_00617ERS013207_01424
UniProt
Find proteins for Q7BGC0 (Vibrio cholerae)
Explore Q7BGC0 
Go to UniProtKB:  Q7BGC0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ7BGC0
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PAM
Query on PAM

Download Ideal Coordinates CCD File 
E [auth A]PALMITOLEIC ACID
C16 H30 O2
SECPZKHBENQXJG-FPLPWBNLSA-N
 Ligand Interaction
CL
Query on CL

Download Ideal Coordinates CCD File 
B [auth A],
C [auth A],
D [auth A]
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.169 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.337α = 90
b = 39.41β = 97.94
c = 80.238γ = 90
Software Package:
Software NamePurpose
SCALAdata scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
JDirectordata collection
XDSdata reduction

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-04-20
    Type: Initial release
  • Version 1.1: 2016-09-07
    Changes: Database references
  • Version 1.2: 2016-10-05
    Changes: Database references
  • Version 1.3: 2017-11-15
    Changes: Refinement description