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Formation of pyrophosphate on hydroxyapatite with thioesters as condensing agents'Energy-rich' thioesters are shown to act as condensing agents in the formation of pyrophosphate on hydroxyapatite in the presence of water at ambient temperature. The yield of pyrophosphate based on thioester ranges from 2.5% to 11.4% and depends upon the pH and concentration of reactants. Reaction of 0.130 M hydroxyapatite suspended in a solution of 0.08 M sodium phosphate and 0.20 M imidazole hydrochloride (pH 7.0) with 0.10 M N,S-diacetylcysteamine for 6 days gives the highest yield of pyrophosphate (11.4%). Pyrophosphate formation requires the presence of hydroxyapatite, sodium phosphate and the thioester, N,S-diacetylcysteamine. The related thioester, N,S-diacetylcysteine, also yields pyrophosphate in reactions on hydroxyapatite.
Document ID
19830036016
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Weber, A. L.
(Salk Institute for Biological Studies San Diego, CA, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1982
Publication Information
Publication: BioSystems
Volume: 15
Subject Category
Inorganic And Physical Chemistry
Accession Number
83A17234
Funding Number(s)
CONTRACT_GRANT: NSG-7627
Distribution Limits
Public
Copyright
Other

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