Purine nucleobase. Pairs with cytosine via three hydrogen bonds (GC pair more thermostable than AT). Core of GTP, cGMP; G-quadruplex-forming sequences regulate genome biology.
Purine nucleobase. Pairs with cytosine via three hydrogen bonds (GC pair more thermostable than AT). Core of GTP, cGMP; G-quadruplex-forming sequences regulate genome biology.