Here, we're going to take a look at our naming summary. So we have our RNA and our DNA. Remember, the difference in bases is that for RNA, we use uracil, and for DNA, we use thymine. Now, here with the nucleoside, remember, when it comes to a pyrimidine, we change the ending to -idine. And when it's a purine involved as a nitrogenous base, the ending changes to -osine. So, if we take a look here, we have cytosine, uracil, adenine, and guanine, and then their nucleoside names. For the pyrimidines, we change them to -idine, so cytidine, uridine, and then for the purines, we change them to -osine, so adenosine, guanosine. With the nucleotide, all we do is we add 5'-monophosphate to the end of the name. So, it would be each of these with 5'-monophosphate to the end of the name. Remember, each one of these nitrogenous bases has a one-letter code for themselves. So cytosine is C, uracil is U, adenine is A, guanine is G. But here we're talking about the monophosphate version of them, so we'd have to add MP at the end for monophosphate. So these would be their abbreviations.
With DNA, we have here cytosine, thymine, adenine, and guanine. Remember, with DNA, we have to use the prefix of deoxy as well. So, that's the difference here. We have deoxy, but then the rest of the name is the same. Here, we have thymine and because thymine is a pyrimidine, it uses the ending -idine. Again, we have deoxy and deoxy. Just like RNA, once we introduce the phosphate group to the 5'-carbon, we add 5'-monophosphate to the end of the name. Here, the difference now, in addition to these small changes like deoxy, we'd have to add a lowercase 'd' to the front of the name to represent the deoxy component involved. Then, we would include the one-letter abbreviation for each of these nitrogenous bases. So, cytosine is C, thymine is T, adenine is A, guanine is G. And we're talking about the monophosphate version of them, the nucleotide version. So we'd write MP at the end. So, these will represent the abbreviations of each one of these nucleotides.
So, just remember the naming convention that you learned when it comes to nucleosides. And then when it comes to nucleotides, you add 5'-monophosphate to the other name. Remember the one-letter code for each of these nitrogenous bases? We add MP to the end of it to represent the monophosphate. If deoxyribonucleic acid is being used in the form of DNA, we add a lowercase 'd' to the front of the name. Right? So just remember these naming conventions and these naming summaries.