Nucleic Acids Research, Vol 26, Issue 11 2560-2565, Copyright © 1998 by Oxford University Press
SJ Palmer, MR Redfern, GC Smith and JP Cox
Naturally occurring peptides, such as those produced by the poisonous
marine snails of the genus Conus , have the ability to form tight, highly
specific molecular interactions. The rigidity of the peptide framework
which promotes these interactions is usually maintained by disulphide
bonds, and it seems that the overall main chain conformation (or fold) of
the peptide is determined by its length and the sequence distribution of
the pairs of cysteine residues participating in these bonds. The fold of
the peptide in turn is largely responsible for its shape. Since highly
effective molecular interactions occur between species complementary in
shape, we reasoned that peptides with the greatest potential in therapy or
diagnosis would be found in a library of shapes, those peptides with a
shape complementary to a given target being identified, for example, by
selection. As a first step towards constructing such a peptide shape
library, we have developed a method for assembling DNA fragments which
encode an even number of cysteine residues and which are of variable
length. We describe this method here.
ARTICLES
Sticky egyptians: a technique for assembling genes encoding constrained peptides of variable length
Department of Chemistry and Department of Mathematical Sciences, University of Bath, Bath BA2 7AY, UK.
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