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Journal of the American Chemical Society 08/1977; 99(15):4969-76. · 9.91 Impact Factor
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ABSTRACT: Oligomerization of 5' -TMP in water pools entrapped by dodecyl-ammonium chloride surfactant aggregates in benzene: hexane in the presence of dicyanodiimide at temperatures ranging from 21 degree -72 degree resulted in the formation of linear and cyclic oligonucleotides containing up to pentamers. Effects of temperature, time and surfactants have been examined. Rate constants for the formation of oligomers have been determined at five different temperatures. These data afforded values of (formula: see text). Prebiotic significance of these results are discussed.
Journal of Molecular Evolution 06/1977; 9(3):213-23. · 2.27 Impact Factor
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Journal of the American Chemical Society 04/1977; 99(5):1557-69. · 9.91 Impact Factor
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ABSTRACT: Cationic amino acids, arginine and lysine partition differentially from water into aqueous micellar sodium dodecanoate. Conversely, partitioning of serine, glycine, aspartic acid, glutamic acid, threonine, alanine, proline, valine, leucine, phenylalanine and isoleucine do not vary appreciably. Partitioning from neat hexane into dodecylammonium propionate trapped water in hexane is, however, dependent upon both electrostatic and hydrophobic interactions. These results imply that the interior of dedecylammonium propionate aggregates is negatively charged and is capable of hydrogen bonding in addition to providing a hydrophobic enviroment. The solubilities of amino acids in neat hexane substantiate the previously derived amino acid hydrophobicity scale. Relevance of partitioning in these systems to the postulated selective amino acid compartmentalization is discussed.
Journal of Molecular Evolution 12/1975; 6(3):215-32. · 2.27 Impact Factor
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Journal of the American Chemical Society 11/1974; 96(21):6745-53. · 9.91 Impact Factor