phosphorescence and optically detected triplet state magnetic resonance ( odmr ) spectroscopy studies of reca protein and its complexes with poly ( 5-hgu ) and poly ( da-5brdu ) show that the two tryptophan residues are not involved in stacking interactions with the nucleotide bases of either single- or double-stranded polynucleotides .
C0028630
nucleotide
C0032550
polynucleotides