Metal ions1..10 are known to bind to DNA. A number of metal ions have been studied and their binding established. Cu(II)8,9,10 and Ag(I)4 have been widely studied and ample literature exists on these two metals. On the other hand, the interaction of DNA with gold(III) (which does not occur as Au3+ in solution, but rather exists in square planar complexes11) has seldom been considered. During the course of our work on this phenomenon Gibson and coβworkers12 have published a paper recently reporting the results on binding of gold(III) with adenine nucleotides