The Origins of Life on the Earth |
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Page 68
... lysine , arginine , and histidine . These residues play an important role in determining the solubility and polyelectrolyte properties of proteins . In addition , histidine is believed to be a particularly important catalytic group ...
... lysine , arginine , and histidine . These residues play an important role in determining the solubility and polyelectrolyte properties of proteins . In addition , histidine is believed to be a particularly important catalytic group ...
Page 155
... lysine - aspartic acid and arginine - glutamic acid pairing , might have a stereochemical basis . While replication schemes of this kind are by no means excluded , we are prejudiced against them . We doubt whether , in fact , they could ...
... lysine - aspartic acid and arginine - glutamic acid pairing , might have a stereochemical basis . While replication schemes of this kind are by no means excluded , we are prejudiced against them . We doubt whether , in fact , they could ...
Page 186
... lysine path ANCESTRAL GROUP I no lysine path Fig . 14-6 . The evolutionary distribution of lysine pathways . H. J. Vogel concluded that the evolutionary descent of the paths of lysine synthesis involves four ancestral groups . The ...
... lysine path ANCESTRAL GROUP I no lysine path Fig . 14-6 . The evolutionary distribution of lysine pathways . H. J. Vogel concluded that the evolutionary descent of the paths of lysine synthesis involves four ancestral groups . The ...
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