8i00

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
Current revision (06:33, 5 February 2025) (edit) (undo)
 
Line 11: Line 11:
== Function ==
== Function ==
[https://www.uniprot.org/uniprot/TTHY_HUMAN TTHY_HUMAN] Thyroid hormone-binding protein. Probably transports thyroxine from the bloodstream to the brain.<ref>PMID:3714052</ref>
[https://www.uniprot.org/uniprot/TTHY_HUMAN TTHY_HUMAN] Thyroid hormone-binding protein. Probably transports thyroxine from the bloodstream to the brain.<ref>PMID:3714052</ref>
 +
<div style="background-color:#fffaf0;">
 +
== Publication Abstract from PubMed ==
 +
Transthyretin (TTR), a homo-tetrameric protein encoded by the TTR gene, can lead to amyloid diseases when destabilized by mutations. The TTR-Ala97Ser (A97S) mutation is the predominant pathogenic variant found in Han-Taiwanese patients and is associated with late-onset familial amyloid polyneuropathy (FAP), which presents a rapid progression of symptoms affecting peripheral nerves and the heart. In this study, we combined nuclear magnetic resonance (NMR) spectroscopy and X-ray crystallography to investigate how the A97S mutation impacts the structure and dynamics of TTR. Previous X-ray analyses indicated that the FG loop exhibits increased flexibility due to the mutation, evidenced by missing electron density and a reduced number of hydrogen bonds. Our NMR hydrogen-deuterium (H/D) exchange experiments provided additional insights, revealing that inter-residue hydrogen bonds among the FG loop residues are unstable in both wild-type (WT) and A97S TTR. Notably, the hydrogen bonds between G67 and S97 are unstable, influencing the stability of adjacent loops. This elongation of the FG loop is believed to contribute to increased flexibility and enhanced water-protein proton exchange, as observed in NMR relaxation and chemical exchange experiments. Our findings offer a comprehensive understanding of how the A97S mutation affects TTR structure and dynamics, providing new insights into its amyloidogenicity.
 +
 +
The Structural and Dynamic Insights into the Ala97Ser Amyloidogenic Mutation in Transthyretin.,Feng YC, Agrawal S, Yang CH, Chang HC, Kuo L, Yu WC, Liu YT, Yu TY Chem Asian J. 2024 Dec 12:e202401438. doi: 10.1002/asia.202401438. PMID:39668552<ref>PMID:39668552</ref>
 +
 +
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 +
</div>
 +
<div class="pdbe-citations 8i00" style="background-color:#fffaf0;"></div>
 +
 +
==See Also==
 +
*[[Transthyretin 3D structures|Transthyretin 3D structures]]
== References ==
== References ==
<references/>
<references/>

Current revision

Crystal structure of A97S transthyretin

PDB ID 8i00

Drag the structure with the mouse to rotate

Proteopedia Page Contributors and Editors (what is this?)

OCA

Personal tools