Influence of alkali metal cations on mixed tetramer formed by guanosine and cytidine - GCGC

- Solutions containing cytidine, guanosine and alkali metal cation were studied by ESIMS.
- Larger cations (K+, Rb+, Cs+) favor the formation of mixed tetramer GCGC.
- Larger cations (K+, Rb+, Cs+) disfavor the formation of mixed dimer GC.