[ccp4bb] Adding Non-natural Base to RNA Model in Coot

[Buz Barstow]

Dear All,

I'd like to add substitute a natural base (adenine) for a non-natural  
base (2-aminopurine), in a molecular model of an RNA molecule.

I'd like to do this with CCP4 and Coot. Could I ask for some help  
please?

Thanks! and all the best,

--Buz