Basepairs involving Sugar edge of Adenine and Sugar edge of Adenine

Basepairs involving Sugar(S) edge of Adenine and Sugar(S) edge of Adenine is shown. Highlighted examples are found from RNA crystal structures obtained from PDB.

Base pairs stabilized by C-H...N/O interactions along with N-H...N/O interactions

Basepair (type & Orientation)	*Frequency	Example	Hydrogen bonding atoms with their precursors
A:A s:s Cis	18/ 4	Residue Nos. 980(B)-2037(B) PDB ID 2QAO	C6-N3....C2-C5 C8-O2'...N3-N7
A:A s:s Trans	6	Optimized Model Structure	C5-N3 ...C2-C6 C6-C2 ...N3-C5

Basepair

(type & Orientation)

*Frequency

Example

Hydrogen bonding atoms with their precursors

A:A s:s Cis

18/
4

Residue Nos. 980(B)-2037(B) PDB ID 2QAO

C6-N3....C2-C5

C8-O2'...N3-N7

A:A s:s Trans

Optimized Model Structure

C5-N3 ...C2-C6

C6-C2 ...N3-C5