1UAN

Crystal structure of the conserved protein TT1542 from Thermus thermophilus HB8


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.203 

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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
  • Primary Citation of Related Structures:  
    1UAN

  • 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 TT1542 homologs in eukaryotes, PIG-L in mammals, and GPI12 in yeast and protozoa, have N-acetylglucosaminylphosphatidylinositol (GlcNAc-PI) de-N-acetylase activity ...

    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
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
hypothetical protein TT1542A, B227Thermus thermophilusMutation(s): 0 
Gene Names: TthHB5018_12830
UniProt
Find proteins for Q84BR2 (Thermus thermophilus)
Explore Q84BR2 
Go to UniProtKB:  Q84BR2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ84BR2
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.203 
  • Space Group: P 3 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 107.134α = 90
b = 107.134β = 90
c = 98.617γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling
SOLVEphasing
RESOLVEphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

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