3IA1 | pdb_00003ia1

Crystal structure of thio-disulfide isomerase from Thermus thermophilus

• PDB DOI: https://doi.org/10.2210/pdb3IA1/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Thermus thermophilus HB27
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2009-07-13 Released: 2009-07-21 
• Deposition Author(s): Patskovsky, Y., Toro, R., Freeman, J., Chang, S., Sauder, J.M., Burley, S.K., Almo, S.C., New York SGX Research Center for Structural Genomics (NYSGXRC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.76 Å
• R-Value Free: 
  0.204 (Depositor), 0.198 (DCC) 
• R-Value Work: 
  0.163 (Depositor) 
• R-Value Observed: 
  0.164 (Depositor) 

Literature

Crystal structure of thio-disulfide isomerase from Thermus thermophilus

Patskovsky, Y., Toro, R., Freeman, J., Chang, S., Sauder, J.M., Burley, S.K., Almo, S.C.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

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

Macromolecule Content 

• Total Structure Weight: 34.53 kDa 
• Atom Count: 2,678 
• Modeled Residue Count: 285 
• Deposited Residue Count: 308 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Thio-disulfide isomerase/thioredoxin	A, B	154	Thermus thermophilus HB27	Mutation(s): 2  Gene Names: TT_C1822
UniProt
Find proteins for Q72GM6 (Thermus thermophilus (strain ATCC BAA-163 / DSM 7039 / HB27)) Explore Q72GM6  Go to UniProtKB:  Q72GM6

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ACT	C [auth A], D [auth B]	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.76 Å
• R-Value Free:  0.204 (Depositor), 0.198 (DCC) 
• R-Value Work:  0.163 (Depositor) 
• R-Value Observed: 0.164 (Depositor) 

Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 63.237	α = 90
b = 63.237	β = 90
c = 152.535	γ = 120

Software Package:

Software Name	Purpose
SHELXD	phasing
REFMAC	refinement
DENZO	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-07-21 
Deposition Author(s): Patskovsky, Y., Toro, R., Freeman, J., Chang, S., Sauder, J.M., Burley, S.K., Almo, S.C., New York SGX Research Center for Structural Genomics (NYSGXRC)

Revision History  

• Version 1.0: 2009-07-21
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Source and taxonomy, Version format compliance
• Version 1.2: 2018-11-21
  Changes: Data collection, Structure summary
• Version 1.3: 2021-02-10
  Changes: Database references, Derived calculations, Structure summary
• Version 1.4: 2021-10-13
  Changes: Database references
• Version 1.5: 2024-11-20
  Changes: Data collection, Structure summary