Cm. Nunn et S. Neidle, THE STRUCTURE OF CHAIN-LINKED DNA AS A POSSIBLE MODEL FOR THE TRANSCRIPTION BUBBLE, Nature structural biology, 2(12), 1995, pp. 1060-1061
An antiparallel DNA decanucleotide displays an unusual crystal structu
re in which each molecule is linked to a neighbour by base pairs betwe
en intertwined, looped strands. The structure suggests a model for the
transcription bubble.