The discrepancy between the frequency of the amino acid in proteins and the number of codons is greater for arginine than for any other amino acid. Close window. All rights reserved. Chemical Properties: Basic Basic R-group. See: PubMed. Roles Classification. Chemical Role s :. Bronsted acid A molecular entity capable of donating a hydron to an acceptor Br o nsted base. Biological Role s :. Escherichia coli metabolite Any bacterial metabolite produced during a metabolic reaction in Escherichia coli.
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