ISDA

Deposition Date 2012-12-03

Release Date 2013-06-19

Last Version Date 2023-09-20

Entry Detail

PDB ID:

4I85

Keywords:

transport protein/inhibitor

Title:

Crystal structure of transthyretin in complex with CHF5074 at neutral pH

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.67 Å

R-Value Free:

0.22

R-Value Work:

0.18

R-Value Observed:

0.18

Space Group:

P 21 21 2

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Transthyretin
Gene (Uniprot):TTR
Chain IDs:A, B
Chain Length:127
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:P02766 Pfam ID:PF00576

Ligand Molecules

H50

Primary Citation

Structural evidence for native state stabilization of a conformationally labile amyloidogenic transthyretin variant by fibrillogenesis inhibitors.

Zanotti, G, Cendron, L, Folli, C, Florio, P, Imbimbo, B.P, Berni, R, Pasquato, N, Berni, R, Folli, C, Alfieri, B, Cendron, L, Zanotti, G, Cendron, L, Trovato, A, Seno, F, Folli, C, Alfieri, B, Zanotti, G, Berni, R.Show

Febs Lett. 587 2325 2331 (2013)

PMID: 23792159 DOI: 10.1016/j.febslet.2013.06.016

Abstact

Several classes of chemicals are able to bind to the thyroxine binding sites of transthyretin (TTR), stabilizing its native state and inhibiting in vitro the amyloidogenic process. The amyloidogenic I84S TTR variant undergoes a large conformational change at moderately acidic pH. Structural evidence has been obtained by X-ray analysis for the native state stabilization of I84S TTR by two chemically distinct fibrillogenesis inhibitors. In fact, they fully prevent the acidic pH-induced protein conformational change as a result of a long-range stabilizing effect. This study provides further support to the therapeutic strategy based on the use of TTR stabilizers as anti-amyloidogenic drugs.

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Disease

Primary Citation of related structures