Aciclovir is built from a hydroxymethyl group bound to this compound.
Aciclovir is built from a hydroxymethyl group bound to this compound. Cisplatin prevents a "suicide enzyme" methyltransferase from binding this compound. It can be formed by reductive amination of xanthine. This compound's namesake exchange factors, which oppose GAPs, add a phosphate group to a (*) di-phosphorylated derivative of this compound. The 5-prime cap is formed from a ribosylated, methylated form of this compound. This compound, which has an imidazole ring, donates two hydrogen bonds and accepts one. A class of proteins named for this compound act as molecular switches after receiving signals from GPCRs. This purine is rich in very stable DNA sequences. For 10 points, name this nitrogenous base that pairs with cytosine.
Aciclovir is built from a hydroxymethyl group bound to this compound.
guanine [or guanosine]