1WY6

Crystal Structure of Hypothetical Protein [ST1625p] from Hyperthermophilic Archaeon Sulfolobus tokodaii

• PDB DOI: https://doi.org/10.2210/pdb1WY6/pdb
• Entry: 1WY6 supersedes: 1VDU

• Classification: STRUCTURAL GENOMICS, UNKNOWN FUNCTION
• Organism(s): Sulfurisphaera tokodaii
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2005-02-07 Released: 2005-02-15 
• Deposition Author(s): Yoneda, K., Sakuraba, H., Tsuge, H., Katunuma, N., Kuramitsu, S., Kawabata, T., Ohshima, T.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.275 
• R-Value Work: 0.222 

Literature

The first crystal structure of an archaeal helical repeat protein.

Yoneda, K., Sakuraba, H., Tsuge, H., Katunuma, N., Kuramitsu, S., Kawabata, T., Ohshima, T.

(2005) Acta Crystallogr Sect F Struct Biol Cryst Commun 61: 636-639

• PubMed: 16511116 
• DOI: https://doi.org/10.1107/S1744309105019263
• Primary Citation of Related Structures:  
  1WY6


• PubMed Abstract: 
  

  The crystal structure of ST1625p, a protein encoded by a hypothetical open reading frame ST1625 in the genome of the hyperthermophilic archaeon Sulfolobus tokodaii, was determined at 2.2 A resolution. The only sequence similarity exhibited by the amino-acid sequence of ST1625p was a 33% identity with the sequence of SSO0983p from S. solfataricus. The 19 kDa monomeric protein was observed to consist of a right-handed superhelix assembled from a tandem repeat of ten alpha-helices. A structural homology search using the DALI and MATRAS algorithms indicates that this protein can be classified as a helical repeat protein.

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Organizational Affiliation: 

Department of Biological Science and Technology, Faculty of Engineering, University of Tokushima, Tokushima 770-8506, Japan.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 19.41 kDa 
• Atom Count: 1,325 
• Modelled Residue Count: 159 
• Deposited Residue Count: 172 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
hypothetical protein ST1625	A	172	Sulfurisphaera tokodaii	Mutation(s): 0
UniProt
Find proteins for Q970G9 (Sulfurisphaera tokodaii (strain DSM 16993 / JCM 10545 / NBRC 100140 / 7)) Explore Q970G9  Go to UniProtKB:  Q970G9

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.275 
• R-Value Work: 0.222 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 36.37	α = 90
b = 50.44	β = 90
c = 82.31	γ = 90

Software Package:

Software Name	Purpose
Crystal	data collection
HKL-2000	data reduction
SOLVE	phasing
CNS	refinement
CrystalClear	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-02-15 
Deposition Author(s): Yoneda, K., Sakuraba, H., Tsuge, H., Katunuma, N., Kuramitsu, S., Kawabata, T., Ohshima, T.
• This entry supersedes: 1VDU

Revision History  

• Version 1.0: 2005-02-15
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance