2F8I | pdb_00002f8i

Human transthyretin (TTR) complexed with Benzoxazole

• PDB DOI: https://doi.org/10.2210/pdb2F8I/pdb

• Classification: HORMONE/GROWTH FACTOR
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2005-12-02 Released: 2005-12-20 
• Deposition Author(s): Palaninathan, S.K., Mohamedmohaideen, N.N., Sacchettini, J.C., Kelly, J.W.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.54 Å
• R-Value Free: 
  0.246 (Depositor) 
• R-Value Work: 
  0.217 (Depositor) 
• R-Value Observed: 
  0.219 (Depositor) 

Starting Model: experimental

Literature

Benzoxazoles as transthyretin amyloid fibril inhibitors: synthesis, evaluation, and mechanism of action

Razavi, H., Palaninathan, S.K., Powers, E.T., Wiseman, R.L., Purkey, H.E., Mohamedmohaideen, N.N., Deechongkit, S., Chiang, K.P., Dendle, M.T., Sacchettini, J.C., Kelly, J.W.

(2003) Angew Chem Int Ed Engl 42: 2758-2761

• PubMed: 12820260 
• DOI: https://doi.org/10.1002/anie.200351179
• Primary Citation of Related Structures:  
  2F8I

---

Organizational Affiliation: 
• Department of Chemistry, The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.

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)

Biological Assembly 2  

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

Biological assembly 2 generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 28.17 kDa 
• Atom Count: 1,948 
• Modeled Residue Count: 225 
• Deposited Residue Count: 254 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Transthyretin	A, B	127	Homo sapiens	Mutation(s): 0  Gene Names: TTR, PALB
UniProt & NIH Common Fund Data Resources
Find proteins for P02766 (Homo sapiens) Explore P02766  Go to UniProtKB:  P02766
PHAROS:  P02766 GTEx:  ENSG00000118271

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
205	C [auth A], D [auth B]	2-(2,6-DICHLOROPHENYL)-1,3-BENZOXAZOLE-6-CARBOXYLIC ACID C14 H7 Cl2 N O3 XVNRKPCHMYOPPL-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.54 Å
• R-Value Free:  0.246 (Depositor) 
• R-Value Work:  0.217 (Depositor) 
• R-Value Observed: 0.219 (Depositor) 

Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 43.072	α = 90
b = 84.69	β = 90
c = 64.731	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
SCALEPACK	data scaling
EPMR	phasing
CNS	refinement
HKL-2000	data collection
HKL-2000	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-12-20 
Deposition Author(s): Palaninathan, S.K., Mohamedmohaideen, N.N., Sacchettini, J.C., Kelly, J.W.

Revision History  

• Version 1.0: 2005-12-20
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2018-01-24
  Changes: Structure summary
• Version 1.4: 2019-07-24
  Changes: Data collection, Derived calculations, Refinement description
• Version 1.5: 2019-08-14
  Changes: Data collection
• Version 1.6: 2023-08-30
  Changes: Data collection, Database references, Derived calculations, Refinement description