3ESO

Human transthyretin (TTR) complexed with N-(3,5-Dibromo-4-hydroxyphenyl)-2,5-dichlorobenzamide

Summary for 3ESO

• Entry DOI: 10.2210/pdb3eso/pdb
• Related: 3ESN 3ESP
• Descriptor: Transthyretin, 2,5-dichloro-N-(3,5-dibromo-4-hydroxyphenyl)benzamide (3 entities in total)
• Functional Keywords: hormone, growth factor, amyloid, disease mutation, gamma-carboxyglutamic acid, glycoprotein, polymorphism, polyneuropathy, retinol-binding, secreted, thyroid hormone, transport, vitamin a
• Biological source: Homo sapiens (human)
• Cellular location: Secreted: P02766
• Total number of polymer chains: 2
• Total formula weight: 28434.55

Authors

Connelly, S.,Wilson, I.A. (deposition date: 2008-10-06, release date: 2009-04-07, Last modification date: 2023-12-27)

Primary citation

Johnson, S.M.,Connelly, S.,Wilson, I.A.,Kelly, J.W.
Toward optimization of the second aryl substructure common to transthyretin amyloidogenesis inhibitors using biochemical and structural studies.
J.Med.Chem., 52:1115-1125, 2009

PubMed Abstract: Transthyretin (TTR) amyloidogenesis inhibitors are typically composed of two aromatic rings and a linker. We have previously established optimal structures for one aromatic ring and the linker. Herein, we employ a suboptimal linker and an optimal aryl-X substructure to rank order the desirability of aryl-Z substructures--using a library of 56 N-(3,5-dibromo-4-hydroxyphenyl)benzamides. Coconsideration of amyloid inhibition potency and ex vivo plasma TTR binding selectivity data reveal that 2,6, 2,5, 2, 3,4,5, and 3,5 substituted aryls bearing small substituents generate the most potent and selective inhibitors, in descending order. These benzamides generally lack undesirable thyroid hormone receptor binding and COX-1 inhibition activity. Three high-resolution TTR.inhibitor crystal structures (1.31-1.35 A) provide insight into why these inhibitors are potent and selective, enabling future structure-based design of TTR kinetic stabilizers.

PubMed: 19191553
DOI: 10.1021/jm801347s

Experimental method

X-RAY DIFFRACTION (1.31 Å)