The Origins of Life on the Earth |
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Page 141
... phosphorylation of nucleosides can be achieved by heating them with acid phosphates such as NaH2PO4 and Ca ( H2PO4 ) 2 . The reaction occurs quite rapidly at 130 ° C and can still be studied at temperatures as low as 65-80 ° C . The ...
... phosphorylation of nucleosides can be achieved by heating them with acid phosphates such as NaH2PO4 and Ca ( H2PO4 ) 2 . The reaction occurs quite rapidly at 130 ° C and can still be studied at temperatures as low as 65-80 ° C . The ...
Page 148
... phosphorylation in aqueous solution , " Science 161 , 64 ( 1968 ) . H. Halman , R. A. Sanchez , and L. E. Orgel , “ Phosphorylation of D - ribose in aqueous solution , " J. Org . Chem . 34 , 3702 ( 1969 ) . H. Halman and H. L. Schmidt ...
... phosphorylation in aqueous solution , " Science 161 , 64 ( 1968 ) . H. Halman , R. A. Sanchez , and L. E. Orgel , “ Phosphorylation of D - ribose in aqueous solution , " J. Org . Chem . 34 , 3702 ( 1969 ) . H. Halman and H. L. Schmidt ...
Page 149
... phosphorylation in aqueous solution , " Science 161 , 64 ( 1968 ) . Cyanoacetylene J. P. Ferris , " Cyanovinyl phosphate : a prebiological phosphorylating agent , " Science 161 , 53 ( 1968 ) . J. P. Ferris , G. Goldstein , and D. J. ...
... phosphorylation in aqueous solution , " Science 161 , 64 ( 1968 ) . Cyanoacetylene J. P. Ferris , " Cyanovinyl phosphate : a prebiological phosphorylating agent , " Science 161 , 53 ( 1968 ) . J. P. Ferris , G. Goldstein , and D. J. ...
Contents
PREBIOTIC SYNTHESIS OF PURINES PYRIMIDINES | 8 |
THE COMPOSITION | 12 |
GEOLOGICAL EVIDENCE | 16 |
Copyright | |
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abundant active adenine alanine aldehydes amino acids ammonia ammonium amounts anticodon aqueous solution aspartic acid biochemical biological CaCO3 carbon CH₂ chain chemical chert CO₂ concentration condensation contain COOH cyanoacetylene cytosine decomposition dust cloud electric discharge energy enzyme equilibrium escape layer evolution example formaldehyde formation formed gases genetic geological glutamic acid glycine H₂ H₂N H₂O hydrocarbons hydrogen cyanide hydrolysis hydrolyzed important inorganic L. E. Orgel limestone living organisms material mechanism membranes metabolism meteorites methane minerals mixture molecules N₂ NH₂ nitrogen nucleic acids nucleotides O₂ obtained occur organic compounds origin oxidation oxygen pathways peptide phosphate phosphorylation photochemical photosynthesis planets polymers polynucleotides polypeptides prebiotic prebiotic synthesis Precambrian present pressure primitive atmosphere primitive earth primitive ocean purines reaction replication rocks Schopf Science sequence solar system structure sugars surface t-RNA temperature ultraviolet light volcanoes yield