3LFK

A reported archaeal mechanosensitive channel is a structural homolog of MarR-like transcriptional regulators


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.211 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

A reported archaeal mechanosensitive channel is a structural homolog of MarR-like transcriptional regulators.

Liu, Z.Walton, T.A.Rees, D.C.

(2010) Protein Sci. 19: 808-814

  • DOI: 10.1002/pro.360

  • PubMed Abstract: 
  • Several archaeal mechanosensitive (MS) channels have been reported, including one from Thermoplasma volcanium designated MscTV. Here, we report the crystal structure of MscTV at 1.6-A resolution. Unexpectedly, MscTV was found to be a water-soluble pr ...

    Several archaeal mechanosensitive (MS) channels have been reported, including one from Thermoplasma volcanium designated MscTV. Here, we report the crystal structure of MscTV at 1.6-A resolution. Unexpectedly, MscTV was found to be a water-soluble protein exhibiting a winged helix-turn-helix (wHTH) motif, which is the signature of the MarR (multiple antibiotic resistance regulator) family of transcriptional regulators. A cell-based osmotic downshock functional assay demonstrated that MscTV was unable to protect a knockout strain of Escherichia coli from hypoosmotic shock, further indicating that it does not function as a MS channel. We propose this protein be renamed MLPTv for MarR-like protein from T. volcanium.


    Organizational Affiliation

    Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MarR Like Protein, TVG0766549
A, B, C, D
129Thermoplasma volcanium (strain ATCC 51530 / DSM 4299 / JCM 9571 / NBRC 15438 / GSS1)Mutation(s): 0 
Find proteins for Q97AP8 (Thermoplasma volcanium (strain ATCC 51530 / DSM 4299 / JCM 9571 / NBRC 15438 / GSS1))
Go to UniProtKB:  Q97AP8
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CIT
Query on CIT

Download SDF File 
Download CCD File 
D
CITRIC ACID
C6 H8 O7
KRKNYBCHXYNGOX-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.211 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 65.130α = 90.00
b = 88.335β = 90.00
c = 115.212γ = 90.00
Software Package:
Software NamePurpose
Blu-Icedata collection
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling
SHELXSphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-04-14
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance