1NSW | pdb_00001nsw

The Crystal Structure of the K18G Mutant of the thioredoxin from Alicyclobacillus acidocaldarius

• PDB DOI: https://doi.org/10.2210/pdb1NSW/pdb

• Classification: ELECTRON TRANSPORT
• Organism(s): Alicyclobacillus acidocaldarius
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2003-01-28 Released: 2003-08-05 
• Deposition Author(s): Bartolucci, S., De Simone, G., Galdiero, S., Improta, R., Menchise, V., Pedone, C., Pedone, E., Saviano, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 
  0.249 (Depositor), 0.250 (DCC) 
• R-Value Work: 
  0.205 (Depositor), 0.205 (DCC) 
• R-Value Observed: 
  0.237 (Depositor) 

Starting Model: experimental

Literature

An integrated structural and computational study of the thermostability of two thioredoxin mutants from Alicyclobacillus acidocaldarius

Bartolucci, S., De Simone, G., Galdiero, S., Improta, R., Menchise, V., Pedone, C., Pedone, E., Saviano, M.

(2003) J Bacteriol 185: 4285-4289

• PubMed: 12837806 
• DOI: https://doi.org/10.1128/JB.185.14.4285-4289.2003
• Primary Citation Related Structures: 
  1NSW, 1NW2


• PubMed Abstract: 
  

  We report a crystallographic and computational analysis of two mutant forms of the Alicyclobacillus acidocaldarius thioredoxin (BacTrx) done in order to evaluate the contribution of two specific amino acids to the thermostability of BacTrx. Our results suggest that the thermostability of BacTrx may be modulated by mutations affecting the overall electrostatic energy of the protein.

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Organizational Affiliation: 
• Dipartimento di Chimica Biologica, University of Naples Federico II, Istituto di Biostrutture e Bioimmagini-CNR, 80134 Naples, Italy.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 46.05 kDa 
• Atom Count: 3,470 
• Modeled Residue Count: 420 
• Deposited Residue Count: 420 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
THIOREDOXIN	A, B, C, D	105	Alicyclobacillus acidocaldarius	Mutation(s): 1  EC: 1.8.1.9
UniProt
Find proteins for P80579 (Alicyclobacillus acidocaldarius subsp. acidocaldarius) Explore P80579  Go to UniProtKB:  P80579

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free:  0.249 (Depositor), 0.250 (DCC) 
• R-Value Work:  0.205 (Depositor), 0.205 (DCC) 
• R-Value Observed: 0.237 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 46.73	α = 90
b = 73.89	β = 103.79
c = 54.91	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
CNS	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-08-05 
Deposition Author(s): Bartolucci, S., De Simone, G., Galdiero, S., Improta, R., Menchise, V., Pedone, C., Pedone, E., Saviano, M.

Revision History  

• Version 1.0: 2003-08-05
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2021-10-27
  Changes: Data collection, Database references
• Version 1.4: 2023-08-16
  Changes: Data collection, Refinement description
• Version 1.5: 2024-10-30
  Changes: Structure summary