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Sugar-peptide structures reactions

A cursory glance at the structure of DNA shows that it is composed of hydrogen-bonded units, the purine and pyrimidine bases, attached to sugars that are linked by phosphate groups. There is no chemical reason why the perfectly symmetric phosphates should bind in the orientation that they do. The same problem arises in when a synthetic analogue of a DNA-type replicator is considered. The most useful linkages are imine and peptide bonds. Both require a terminal amine the former results from a reaction with an aldehyde and the latter with an activated carboxylic acid. The problem that occurs is that if these functional groups are present within the same molecule self-polymerization may occur unless a substantial effort is made to avoid this. [Pg.72]

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See also in sourсe #XX -- [ Pg.6 ]

See also in sourсe #XX -- [ Pg.6 ]



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