Nucleotide numbering help.
Hydrogen bonds are indicated by the green dotted lines. The N1 of 7methylG46 is an H-bond donor to N7 of G22. The exocyclic N2 of 7meG46 is also an H-bond donor to O6 of G22. G22 also forms a standard base pair with C13.
Show the H-bonds for this base triple on the 3-D structure: <