Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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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: 51538.12 
• Atom Count: 3518 
• Residue Count: 476 
• Unique protein chains: 1

1OO2

Crystal structure of transthyretin from Sparus aurata

• DOI: 10.2210/pdb1OO2/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Sparus aurata
• Expression System: Escherichia coli


• 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 

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 


• 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: 

• 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
• 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




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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

Find similar proteins by: Sequence  |  Structure

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

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
CD	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 
• Space Group: C 1 2 1

Unit Cell:

Length (Å)	Angle (°)
a = 96.452	α = 90.00
b = 65.622	β = 97.40
c = 70.834	γ = 90.00

Software Package:

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

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
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance