And finally, because we have only one phosphate group, not three, this last part is monophosphate. So Deoxyguanosine is the nucleotide three prime. Monophosphate is where that single phosphate group is actually attached to on that sugar. Now the shorthand way of writing that is three prime Dgmp, where D is deoxy, G is our guanassine, M is mono, and P is phosphate. And this three prime basically tells us where that phosphate group is attached to on our sugar molecule. Now, in DNA molecules we have four types of nucleotides.