Thermodynamic study of transthyretin association (wild-type and senile forms) with heparan sulfate proteoglycan: pH effect and implication of the reactive histidine residue.

Abstract excerpt

The tetramer destabilization of transthyretin into monomers and its fibrillation are phenomena leading to amyloid deposition. Heparan sulfate proteoglycan (HSPG) has been found in all amyloid deposits. A chromatographic approach was developed to compare binding parameters between wild-type transthyretin (wtTTR) and an amyloidogenic transthyretin (sTTR). Results showed a greater affinity of sTTR for HSPG at pH 7.4...

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