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A-DTJ: the common head-to-head arrangement of 2AVY-68 and 2AVY-97. The double helix composed of base pairs G69-C99 and U70-A98 plays the role of helix H1 for each of the two motifs. Nucleotides A72, A71, and G100 form a continuous stack, which interacts with the minor groove of helix H2, thus stabilizing the TJ1 of both A-DTJs.
