Posted: Mar 06, 2010 2:15 pm
Spearthrower wrote:rainbow wrote:
There is a great deal of elegance in the Sutherland experiment, but it does contradict a lot of other work that has been done on the synthesis of bases and sugars prior to nucleotide synthesis
Unsupported assertion, and generally meaningless anyway... in other words, you evaded discussing it.rainbow wrote:Moreover, research has established that these lipids can encapsulate RNA molecules, and selectively admit the passage of base and sugar molecules to facilitate RNA replication[54, 55].
Ribose sugar isn't that easily formed under prebiotic conditions
Unsupported assertion, and generally meaningless anyway - the 'ease' of its occurrence wasn't being discussed.
OK, then I assume that Leslie Orgel was wrong:
We conclude that some progress has been made in the search for an efficient and specific prebiotic synthesis of ribose and its phosphates. However, in every scenario, there are still a number of obstacles to the completion of a synthesis that yields significant amounts of sufficiently pure ribose in a form that could readily be incorporated into nucleotides.
http://www.physics.nmt.edu/~mce/Orgel_2004.pdf