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Polycondensation of alpha-amino acids by pyrosulfuric acidThe thermal polycondensation of amino acids common to protein is promoted at 80 deg C by pyrosulfuric acid. This is in contrast to the noncondensation at 100 deg C in the presence of concentrated sulfuric acid. These results are in accord with an anhydride mechanism, as proposed earlier for copolycondensation promoted by polyphosphoric acid. The amino acid composition, molecular weight, near-homogeneity, and infrared absorption of the polymer formed are described. The potential significance of planetary pyrosulfuric acid is discussed.
Document ID
19770034744
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1016/0303-2647(76)90011-3
Authors
Denes, F. (Miami Univ. Coral Gables, FL, United States)
Fox, S. W. (Miami, University Coral Gables, Fla., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1976
Publication Information
Publication: BioSystems
Volume: 8
Subject Category
Chemistry And Materials (General)
Accession Number
77A17596
Funding Number(s)
CONTRACT_GRANT: NGR-10-007-008
Distribution Limits
Public
Copyright
Other

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