Dielectric study of the interaction between DNA and an oligopeptide (lysine-tyrosine-lysine).
Interaction between Na-DNA and the oligopeptide lysine-tyrosine-lysine (LTL) is studied by a dielectric method. The comparison between conductivities (at the frequence of 5MHz) of LTL alone and of the complex LTL-DNA allows us to show up an electrostatic interaction between LTL and phosphates sites of DNA. During the formation of the complex LTL-DNA, a certain fraction of Na+ counter-ions is ejected from the phosphates sites.
D000818:Animals; D001665:Binding Sites; D002417:Cattle; D004247:DNA; D004553:Electric Conductivity; D004563:Electrochemistry; D008239:Lysine; D008433:Mathematics; D009842:Oligopeptides; D011485:Protein Binding; D012965:Sodium Chloride; D013054:Spectrophotometry, Atomic; D013950:Thymus Gland; D014443:Tyrosine
D009842:Oligopeptides; D014443:Tyrosine; D012965:Sodium Chloride; D004247:DNA; D008239:Lysine