Crystal structure of TTHA0845 from Thermus thermophilus HB8

Experimental Data Snapshot

  • Resolution: 2.40 Å
  • R-Value Free: 0.294 
  • R-Value Work: 0.250 
  • R-Value Observed: 0.252 

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This is version 1.2 of the entry. See complete history


Structure of the stand-alone RAM-domain protein from Thermus thermophilus HB8

Nakano, N.Okazaki, N.Satoh, S.Takio, K.Kuramitsu, S.Shinkai, A.Yokoyama, S.

(2006) Acta Crystallogr Sect F Struct Biol Cryst Commun 62: 855-860

  • DOI: https://doi.org/10.1107/S1744309106031150
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The stand-alone RAM (regulation of amino-acid metabolism) domain protein SraA from Thermus thermophilus HB8 (TTHA0845) was crystallized in the presence of zinc ions. The X-ray crystal structure was determined using a multiple-wavelength anomalous dispersion technique and was refined at 2.4 A resolution to a final R factor of 25.0%. The monomeric structure is a betaalphabetabetaalphabeta fold and it dimerizes mainly through interactions between the antiparallel beta-sheets. Furthermore, five SraA dimers form a ring with external and internal diameters of 70 and 20 A, respectively. This decameric structure is unique compared with the octameric and dodecameric structures found for other stand-alone RAM-domain proteins and the C-terminal RAM domains of Lrp/AsnC-family proteins.

  • Organizational Affiliation

    RIKEN SPring-8 Center, Harima Institute, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
probable transcriptional regulator, AsnC family
A, B, C, D, E
A, B, C, D, E, F, G, H, I, J
92Thermus thermophilus HB8Mutation(s): 0 
Find proteins for Q5SK07 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore Q5SK07 
Go to UniProtKB:  Q5SK07
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5SK07
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.40 Å
  • R-Value Free: 0.294 
  • R-Value Work: 0.250 
  • R-Value Observed: 0.252 
  • Space Group: P 32
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 95.883α = 90
b = 95.883β = 90
c = 119.01γ = 120
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-09-12
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Source and taxonomy, Version format compliance