Sheared G.A

From Eterna Wiki

Sheared GA is a basepairing between a Guanine and an Adenine

<img src="" alt="" width="576px;" height="429px;" />

Picture by Nando on how a sheared GA line up in postion to the backbone, compared to a GC-pair. Notice the bases position along the magenta lines. Also check out Nando's blog post on other "famous" non-canonical Base Pairs.