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  • Title: [Isolation and various properties of thiamine-binding protein from synaptosomes in the rat brain].
    Author: Postoenko VA, Parkhomenko IuM, Vovk AI, Khalmuradov AG, Donchenko GV.
    Journal: Biokhimiia; 1987 Nov; 52(11):1792-7. PubMed ID: 3440111.
    Abstract:
    A thiamine-binding protein (ThBP) with a specific activity of 8.21 nmoles/mg protein was isolated from rat brain synaptosomes by affinity chromatography and gel filtration on Sephadex G-200. The protein was purified 746-fold with a 40.5% yield. ThBP was homogeneous during sodium dodecyl sulfate gel electrophoresis; its molecular mass was determined by gel filtration on Sephadex G-200 and by sodium dodecyl sulfate gel electrophoresis and was equal to 107 and 103 kD, respectively. The pH optimum for the binding is 8.35. When the ability of ThBP to bind thiamine phosphates was tested, the latter decreased in the following order: thiamine monophosphate greater than thiamine triphosphate greater than greater than thiamine diphosphate.
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