A standard A T base pair is shown in Fig. 24-1. Under certain conditions, an adenine residue

A standard A ˆ™ T base pair is shown in Fig. 24-1. Under certain conditions, an adenine residue in B-DNA can transiently adopt the syn conformation. Draw the resulting A ˆ™ T base pair. Is the helix diameter larger or smaller in this alternate arrangement?
In Figure 24.1

Transcribed Image Text:

CH Major groove 15s 51.5 10.85 A Minor groove Major groove 4 5 51.5 51.5 10.85 A Minor groove