1TI3 | pdb_00001ti3

Solution structure of the Thioredoxin h1 from poplar, a CPPC active site variant

• PDB DOI: https://doi.org/10.2210/pdb1TI3/pdb
• BMRB: 6079

• Classification: OXIDOREDUCTASE
• Organism(s): Populus tremula
• Mutation(s): No 


• Deposited: 2004-06-02 Released: 2004-12-14 
• Deposition Author(s): Coudevylle, N., Thureau, A., Hemmerlin, C., Gelhaye, E., Jacquot, J.P., Cung, M.T.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

Solution structure of a natural CPPC active site variant, the reduced form of thioredoxin h1 from poplar.

Coudevylle, N., Thureau, A., Hemmerlin, C., Gelhaye, E., Jacquot, J.P., Cung, M.T.

(2005) Biochemistry 44: 2001-2008

• PubMed: 15697225 
• DOI: https://doi.org/10.1021/bi047816n
• Primary Citation Related Structures: 
  1TI3


• PubMed Abstract: 
  

  Assignment of heteronuclear and homonuclear multidimensional NMR spectra permits determination of the first three-dimensional solution structure of a higher-plant thioredoxin h. The collection of 1906 distance restraints, 137 TALOS-derived dihedral restraints, and 66 hydrogen bonds was used in the restrained molecular dynamics protocol to calculate the structure of the reduced form of thioredoxin h1 from poplar with an atomic rmsd of 0.60 +/- 0.12 A. This enzyme exhibits an unusual active site with the sequence WCPPC and original properties in terms of stability and specificity. Compared to other known thioredoxin structures, thioredoxin h1 from poplar adopts the classical "Trx fold". Its atypical active site possesses a conformation similar to that of other common thioredoxins but appears to be more rigid. Moreover, the hydrogen bond network, stabilizing the in-core beta-sheet, is tighter than in Chlamydomonas reinhardtii, explaining the difference in thermostability.

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Organizational Affiliation: 
• Laboratoire de Chimie-Physique Macromoléculaire, UMR 7568 CNRS-INPL, Groupe ENSIC, 1 rue Grandville, B.P. 451, 54001 Nancy Cedex, France.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 12.46 kDa 
• Atom Count: 876 
• Modeled Residue Count: 113 
• Deposited Residue Count: 113 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
thioredoxin H	A	113	Populus tremula	Mutation(s): 0
UniProt
Find proteins for Q8S3L3 (Populus tremula x Populus tremuloides) Explore Q8S3L3  Go to UniProtKB:  Q8S3L3

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2004-12-14 
Deposition Author(s): Coudevylle, N., Thureau, A., Hemmerlin, C., Gelhaye, E., Jacquot, J.P., Cung, M.T.

Revision History  

• Version 1.0: 2004-12-14
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2022-03-02
  Changes: Data collection, Database references, Derived calculations
• Version 1.4: 2024-05-22
  Changes: Data collection