Computer Science
Scientific paper
Aug 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997oleb...27..339y&link_type=abstract
Origins of Life and Evolution of the Biosphere, v. 27, Issue 4, p. 339-344 (1997).
Computer Science
3
Scientific paper
The previously reported condensation reaction of glycylglycine with trimetaphosphate (Yamanaka et al., 1988) was reinvestigated and shown to be catalyzed by magnesium ion. Aqueous solutions containing glycylglycine (0.5 M), trimetaphosphate (0.5 M) and magnesium chloride (0.5 M) were incubated at 38 °C at pH 4, 5, 6, 7 and 8. After incubation for ten days at pH 5, the maximum yields of tetraglycine and hexaglycine as condensation products were found to be about 12 and 1.4%, respectively. This result indicated the presence of a considerable catalytic effect of magnesium ion compared with the maximum yield of about 2% for tetraglycine and ~ 0% for hexaglycine in the absence of magnesium ion.
Inomata Kunihiro
Yamagata Yoriyuki
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