Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 17.37 kDa 
• Atom Count: 1201 
• Modelled Residue Count: 141 
• Deposited Residue Count: 150 
• Unique protein chains: 1

1OZ9

Crystal structure of AQ_1354, a hypothetical protein from Aquifex aeolicus

• PDB DOI: 10.2210/pdb1OZ9/pdb

• Classification: UNKNOWN FUNCTION
• Organism(s): Aquifex aeolicus
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2003-04-08 Released: 2003-09-23 
• Deposition Author(s): Oganesyan, V., Busso, D., Brandsen, J., Chen, S., Jancarik, J., Kim, R., Kim, S.H., Berkeley Structural Genomics Center (BSGC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.89 Å
• R-Value Free: 0.234 
• R-Value Work: 0.205 
• R-Value Observed: 0.207 

Literature

Structure of the hypothetical protein AQ_1354 from Aquifex aeolicus.

Oganesyan, V., Busso, D., Brandsen, J., Chen, S., Jancarik, J., Kim, R., Kim, S.H.

(2003) Acta Crystallogr D Biol Crystallogr 59: 1219-1223

• PubMed: 12832766 
• DOI: 10.1107/s0907444903011028
• Primary Citation of Related Structures:  
  1OZ9


• PubMed Abstract: 
  

The crystal structure of a hypothetical protein AQ_1354 (gi 2983779) from the hyperthermophilic bacteria Aquifex aeolicus has been determined using X-ray crystallography. As found in many structural genomics studies, this protein is not associated with any known function based on its amino-acid sequence. PSI-BLAST analysis against a non-redundant sequence database gave 68 similar sequences referred to as 'conserved hypothetical proteins' from the uncharacterized protein family UPF0054 (accession No. PF02310). Crystallographic analysis revealed that the overall fold of this protein consists of one central alpha-helix surrounded by a four-stranded beta-sheet and four other alpha-helices. Structure-based homology analysis with DALI revealed that the structure has a moderate to good resemblance to metal-dependent proteinases such as collagenases and gelatinases, thus suggesting its possible molecular function. However, experimental tests for collagenase and gelatinase-type function show no detectable activity under standard assay conditions. Therefore, we suggest either that the members of the UPF0054 family have a similar fold but different biochemical functions to those of collagenases and gelatinases or that they have a similar function but perform it under different conditions.

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Organizational Affiliation: 

Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Hypothetical protein AQ_1354	A	150	Aquifex aeolicus	Mutation(s): 0  EC: 3.1
UniProt
Find proteins for O67367 (Aquifex aeolicus (strain VF5)) Explore O67367  Go to UniProtKB:  O67367

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.89 Å
• R-Value Free: 0.234 
• R-Value Work: 0.205 
• R-Value Observed: 0.207 
• Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 58.018	α = 90
b = 58.018	β = 90
c = 110.255	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
SOLVE	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2003-04-08 
• Released Date: 2003-09-23 
Deposition Author(s): Oganesyan, V., Busso, D., Brandsen, J., Chen, S., Jancarik, J., Kim, R., Kim, S.H., Berkeley Structural Genomics Center (BSGC)

Revision History  

• Version 1.0: 2003-09-23
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Advisory, Version format compliance