Catalysis of Dialanine Formation by Glycine in the Salt-Induced Peptide Formation Reaction.

Details Catalysis of Dialanine Formation by Glycine in the Salt-Induced Peptide Formation Reaction. Catalysis of Dialanine Formation by Glycine in the Salt-Induced Peptide Formation Reaction.

Feb 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998oleb...28...79s&link_type=abstract

Origins of Life and Evolution of the Biosphere, v. 28, Issue 1, p. 79-90 (1998).

Physics

6

Scientific paper

Mutual catalysis of amino acids in the salt-induced peptide formation (SIPF) reaction is demonstrated for the case of glycine/alanine. The presence of glycine enhances dialanine formation by a factor up to 50 and enables dialanine formation at much lower alanine concentrations. The actual amounts of glycine play an important role for this catalytic effect, the optimal glycine concentration is 1/8 of the alanine concentration. The mechanism appears to be based on the formation of the intermediate Gly-Ala-Ala tripeptide, connected to one coordination site of copper(II) ion, and subsequent hydrolysis to dialanine and glycine.

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