[Stimulating action of polyphosphates on peptide formation from glycine and phenylalanine amides under abiogenic conditions].

A V Chetkauskaĭte, L L Grinius, L M Mukhin

Index: Zh. Evol. Biokhim. Fiziol. 24(4) , 465-70, (1988)

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Abstract

Synthesis of peptides during polymerization of GlyNH2 and PheNH2 has been demonstrated by means of gel-chromatography and thin-layer chromatography. The optima of pH and temperature have been estimated for the reaction. Grem's salt, tripolyphosphate and pyrophosphate were shown to cause the stimulatory effect on the peptide formation, but there was no correlation between the yield of the peptides and the hydrolysis of the polyphosphates. On the basis of the experimental data, it has been concluded that hydrolysis of polyphosphates is not an energy source for the polymerization of GlyNH2 and PheNH2. Therefore, polyphosphates cause catalytic effect on the peptide synthesis from the amides of amino acids in homogeneous medium.