Assemblies of free amino acids as possible prebiotic catalysts |
| |
Authors: | Bar-Nun A. Kochavi E. Bar-Nun S. |
| |
Affiliation: | (1) Department of Geophysics and Planetary Sciences, Tel Aviv University, 69978 Tel Aviv, Israel;(2) Department of Biochemistry, Tel Aviv University, 69978 Tel Aviv, Israel |
| |
Abstract: | Our understanding of how life emerged on Earth has much to do with speculations about the ways in which prebiotic catalysts could have been formed. Since enzymes, the contemporary biological catalysts, are polymers of amino acids, we looked at the possible activity of free amino acids as catalysts. In this study it is shown experimentally that mixtures of free amino acids exert catalytic activities of -galactosidase, carbonic anhydrase, and catalase. We also observed different levels of catalytic activty of individual amino acids: some were more efficient than others. Apparently, assemblies of amino acids which were formed around substrate molecules through weak interactions, could, in principle, catalyze many prebiotic reactions. This might have been one step in the emergence of biological enzymes. |
| |
Keywords: | Origin of life Prebiotic catalysts Free amino acids |
本文献已被 SpringerLink 等数据库收录! |
|