Basepairs involving WatsonCrick edge of Adenine and Hoogsteen edge of Guanine

Basepairs involving WatsonCrick(W) edge of Adenine and Hoogsteen(H) edge of Guanine is shown. Highlighted examples are found from RNA crystal structures obtained from PDB.

Base pairs stabilized by N-H...N/O type hydrogen bonds only

Basepair (type & Orientation)	*Frequency	Example	Hydrogen bonding atoms with their precursors
A:G +:H Cis	4	Optimized Model Structure	N9-N7...N1-N9 N1-O6...N6-N7

Basepair

(type & Orientation)

*Frequency

Example

Hydrogen bonding atoms with their precursors

A:G +:H Cis

Optimized Model Structure

N9-N7...N1-N9

N1-O6...N6-N7