2EF7

Crystal structure of ST2348, a hypothetical protein with CBS domains from Sulfolobus tokodaii strain7


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.216 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structure of ST2348, a CBS domain protein, from hyperthermophilic archaeon Sulfolobus tokodaii

Ragunathan, P.Kumarevel, T.Agari, Y.Shinkai, A.Kuramitsu, S.Yokoyama, S.Ponnuraj, K.

(2008) Biochem.Biophys.Res.Commun. 375: 124-128

  • DOI: 10.1016/j.bbrc.2008.07.140

  • PubMed Abstract: 
  • The crystal structure of a hypothetical protein ST2348 (GI: 47118305) from the hyperthermophilic bacteria Sulfolobus tokodaii has been determined using X-ray crystallography. The protein consists of two CBS (cystathione beta synthase) domains, whose ...

    The crystal structure of a hypothetical protein ST2348 (GI: 47118305) from the hyperthermophilic bacteria Sulfolobus tokodaii has been determined using X-ray crystallography. The protein consists of two CBS (cystathione beta synthase) domains, whose function has been analyzed and reported here. PSI-BLAST shows a conservation of this domain in about 100 proteins in various species. However, none of the close homologs of ST2348 have been functionally characterized so far. Structure and sequence comparison of ST2348 with human AMP-kinase gamma1 subunit and the CBS domain pair of bacterial IMP dehydrogenase is suggestive of its binding to AMP and ATP. A highly conserved residue Asp118, located in a negatively charged patch near the ligand binding cleft, could serve as a site for phosphorylation similar to that found in the chemotatic signal protein CheY and thereby ST2348 can function as a signal transduction molecule.


    Organizational Affiliation

    Centre of Advanced Study in Crystallography and Biophysics, University of Madras, Guindy Campus, Chennai 600 025, India.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Hypothetical protein ST2348
A, B
133Sulfurisphaera tokodaii (strain DSM 16993 / JCM 10545 / NBRC 100140 / 7)Mutation(s): 0 
Gene Names: ST2348
Find proteins for Q96Y20 (Sulfurisphaera tokodaii (strain DSM 16993 / JCM 10545 / NBRC 100140 / 7))
Go to UniProtKB:  Q96Y20
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.216 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 51.420α = 90.00
b = 135.272β = 90.00
c = 41.234γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
HKL-2000data scaling
SOLVEphasing
HKL-2000data reduction
BSSdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-08-21
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Derived calculations, Version format compliance