residues of phe , tyr and trp in the complexes of their oligonucleotide amidates and polynucleotides of a-u of g-c nucleotide composition are most likely localized in the minor groove of the watson -- crick part of the triple helix where they interact with bases but do not intercalate into the helix .
C0028953
oligonucleotide
C0032550
polynucleotides