1UAN

Crystal structure of the conserved protein TT1542 from Thermus thermophilus HB8

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.201 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history. 

Literature

Crystal structure of the conserved protein TT1542 from Thermus thermophilus HB8

Handa, N., Terada, T., Kamewari, Y., Hamana, H., Tame, J.R.H., Park, S.-Y., Kinoshita, K., Ota, M., Nakamura, H., Kuramitsu, S., Shirouzu, M., Yokoyama, S.

(2003) PROTEIN SCI. 12: 1621-1632

  • DOI: 10.1110/gad.03104003

  • PubMed Abstract: 

    • The TT1542 protein from Thermus thermophilus HB8 is annotated as a conserved hypothetical protein, and belongs to the DUF158 family in the Pfam database. A BLAST search revealed that homologs of TT1542 are present in a wide range of organisms. The TT ...

    The TT1542 protein from Thermus thermophilus HB8 is annotated as a conserved hypothetical protein, and belongs to the DUF158 family in the Pfam database. A BLAST search revealed that homologs of TT1542 are present in a wide range of organisms. The TT1542 homologs in eukaryotes, PIG-L in mammals, and GPI12 in yeast and protozoa, have N-acetylglucosaminylphosphatidylinositol (GlcNAc-PI) de-N-acetylase activity. Although most of the homologs in prokaryotes are hypothetical and have no known function, Rv1082 and Rv1170 from Mycobacterium tuberculosis are enzymes involved in the mycothiol detoxification pathway. Here we report the crystal structure of the TT1542 protein at 2.0 A resolution, which represents the first structure for this superfamily of proteins. The structure of the TT1542 monomer consists of a twisted beta-sheet composed of six parallel beta-strands and one antiparallel beta-strand (with the strand order 3-2-1-4-5-7-6) sandwiched between six alpha-helices. The N-terminal five beta-strands and four alpha-helices form an incomplete Rossmann fold-like structure. The structure shares some similarity to the sugar-processing enzymes with Rossmann fold-like domains, especially those of the GPGTF (glycogen phosphorylase/glycosyl transferase) superfamily, and also to the NAD(P)-binding Rossmann fold domains. TT1542 is a homohexamer in the crystal and in solution, the six monomers forming a cylindrical structure. Putative active sites are suggested by the structure and conserved amino acid residues.

    Organizational Affiliation: 

    RIKEN Genomic Sciences Center, 1-7-22 Suehiro-cho, Tsurumi, Yokohama 230-0045, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
hypothetical protein TT1542
A, B
227Thermus thermophilusMutation(s): 0 
Find proteins for Q84BR2 (Thermus thermophilus)
Go to UniProtKB:  Q84BR2
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.201 
  • Space Group: P 3 2 1
Unit Cell:
Length (Å)Angle (°)
a = 107.134α = 90.00
b = 107.134β = 90.00
c = 98.617γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
SOLVEphasing
HKL-2000data reduction
RESOLVEphasing
REFMACrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-08-05
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance