Biological Assembly 1  

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

Global Symmetry: Dihedral - D2  (3D View)
Global Stoichiometry: Homo 4-mer - A4 

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

Macromolecule Content

• Total Structure Weight: 51.54 kDa 
• Atom Count: 3883 
• Modelled Residue Count: 464 
• Deposited Residue Count: 476 
• Unique protein chains: 1

1OO2

Crystal structure of transthyretin from Sparus aurata

• PDB DOI: 10.2210/pdb1OO2/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Sparus aurata
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2003-03-03 Released: 2004-01-20 
• Deposition Author(s): Pasquato, N., Ramazzina, I., Folli, C., Battistutta, R., Berni, R., Zanotti, G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.56 Å
• R-Value Free: 0.224 
• R-Value Work: 0.197 
• R-Value Observed: 0.197 

Literature

Distinctive binding and structural properties of piscine transthyretin.

Folli, C., Pasquato, N., Ramazzina, I., Battistutta, R., Zanotti, G., Berni, R.

(2003) FEBS Lett 555: 279-284

• PubMed: 14644428 
• DOI: 10.1016/s0014-5793(03)01248-1
• Primary Citation of Related Structures:  
  1OO2


• PubMed Abstract: 
  

The thyroid hormone binding protein transthyretin (TTR) forms a macromolecular complex with the retinol-specific carrier retinol binding protein (RBP) in the blood of higher vertebrates. Piscine TTR is shown here to exhibit high binding affinity for L-thyroxine and negligible affinity for RBP. The 1.56 A resolution X-ray structure of sea bream TTR, compared with that of human TTR, reveals a high degree of conservation of the thyroid hormone binding sites. In contrast, some amino acid differences in discrete regions of sea bream TTR appear to be responsible for the lack of protein-protein recognition, providing evidence for the crucial role played by a limited number of residues in the interaction between RBP and TTR. Overall, this study makes it possible to draw conclusions on evolutionary relationships for RBPs and TTRs of phylogenetically distant vertebrates.

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Related Citations: 

• A comparative analysis of 23 structures of the amyloidogenic protein transthyretin
  Hornberg, A., Eneqvist, T., Olofsson, A., Lundgren, E., Sauer-Eriksson, A.E.
  (2000) J Mol Biol 302: 649

• Structure of a complex of two plasma proteins: transthyretin and retinol-binding protein
  Monaco, H.L., Rizzi, M., Coda, A.
  (1995) Science 268: 1039

• The structure of human retinol-binding protein (RBP) with its carrier protein transthyretin reveals an interaction with the carboxy terminus of RBP
  Naylor, H., Newcomer, M.E.
  (1999) Biochemistry 38: 2647

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Organizational Affiliation: 

Department of Biochemistry and Molecular Biology, University of Parma, Parco Area delle Scienze 23/A, 43100 Parma, Italy.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
transthyretin	A, B, C, D	119	Sparus aurata	Mutation(s): 0  Gene Names: TTR
UniProt
Find proteins for Q9PTT3 (Sparus aurata) Explore Q9PTT3  Go to UniProtKB:  Q9PTT3

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CD	E [auth C], F [auth C]	CADMIUM ION Cd WLZRMCYVCSSEQC-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.56 Å
• R-Value Free: 0.224 
• R-Value Work: 0.197 
• R-Value Observed: 0.197 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 96.452	α = 90
b = 65.622	β = 97.4
c = 70.834	γ = 90

Software Package:

Software Name	Purpose
SHELX	model building
SHELXL-97	refinement
MOSFLM	data reduction
CCP4	data scaling
AMoRE	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2003-03-03 
• Released Date: 2004-01-20 
Deposition Author(s): Pasquato, N., Ramazzina, I., Folli, C., Battistutta, R., Berni, R., Zanotti, G.

Revision History  

• Version 1.0: 2004-01-20
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance