Determination of the structural role of the internal guanine-cytosine base pair in recognition of a seven-base-pair sequence cross-linked by bizelesin.

Abstract

Bizelesin (formerly U77,779, The Upjohn Co.) is a bifunctional DNA cross-linking antitumor antibiotic consisting of two open-ring homologs of the (+)-CC-1065 cyclopropa[c]pyrrolo[3,2-e]indol-4(5H)-one (CPI) subunits connected by a rigid linking moiety. Previous studies have shown that Bizelesin most often forms an interstrand cross-link through the N3 of… (More)

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