Zinc induces a bend within the transcription factor IIIA-binding region of the 5 S RNA gene.


Binding of Zn2+ to the 5 S RNA gene sequence of Xenopus borealis results in strong bending of the DNA, as inferred from transient electric birefringence data. The effect is specific for Zn2+; several other divalent ions are not able to induce a bend of a similar magnitude. Using five different fragments that span the binding sequence, we are able to… (More)


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