Tuftsin is an immunostimulator tetrapeptide having the followi...

Question

Tuftsin is an immunostimulator tetrapeptide having the following sequence:

Thr–Lys–Pro–Arg

Write a possible sequence for the gene (Informational & template strand) that codes for this tetrapeptide.

Accepted Answer

Here in this practice question it says, Tufson is an amino stimulator tetrapeptide having the following sequence. So these are the three letter codes of our amino acids. So we have threonine, lysine, proline, and arginine. Here it says, write a possible sequence for the gene when we're talking about the informational and the template strand that codes for this tetrapeptide. Alright. So, what we have to do is look to see where we find each one of these amino acids based on our chart here of codons. So threonine. If we look for threonine, it's here. Lysine would be here. Proline let's see. We see proline here. Arginine. Arginine we find in 2 places, here and here. Now here we're gonna talk about the number of combinations that are possible. So for Lysine oh, no. Threonine first, there are 4 codons attached to it. These 4 here. So it'd be 4. Lysine has 2 codons attached to it, 2. Proline has 4 also. And then arginine has 6. So that'd be 4 times 2, which is going to give us 8. 8 times 4 which gives us 32. And then 32 times 6 here would give us a 192 possible combinations. So again, that's that many combinations that can happen. Here we're just going to choose our own set of codons for each one of these amino acids. Again, the combination, there are a 192. I'm just choosing 1 out of those 192 possibilities. So, here we're gonna say our mRNA, We're gonna say again our mRNA is 5 prime to our 3 prime. So we say for threonine here, let's use we'll use a c a c g as one codon for threonine. For lysine, there's only 2 possibilities. Let's use the a a g one. Proline, there are 4 possibilities. Again, we could choose any of them. I'm gonna use the for that one, we're gonna use the c c u one. Let's use that one. And then, Arginine, there's 6 choices. I'm just gonna choose one of them. So let's see. We'll use the c g u one. Alright. So we have our peptide, which was this, and I've just chosen one of the codons for each one of these. Next, we're gonna do the informational strand. And remember, the informational strand and the mRNA strand, they're copies of each other. The only difference is since the informational strand is DNA based, all the uracels would just be thiamines. So, it's gonna be the same exact thing. So we're gonna have 5 prime to 3 prime. So here this would be a c g. This would still be a a g. And now it's c c t. Remember, wherever we see uracil it gets changed to thymine since we're dealing with the DNA informational strand. Then we're gonna see, c g t. Again, we have a uracel, so we have to change it to Thymine. Then we have finally our template strand. Now, remember our template strand here is going to be anti parallel to our mRNA. So it's gonna be 3 prime on this end and then 5 prime on this end here. Alright. So then here, based off of that, we're just gonna have to write this. And remember, it's these 2 connected together because they're part of DNA. DNA is a double helix. So this would be since it's DNA, we'd say a is connected to t and g is connected to c. So this is a, so this would be t, this would be g c, ttcgga, and then since this is c g t, this would be g c a. So this is how we break down all of the different strands attached to our peptide sequence. So again, from this peptide suit sequence, we can figure out the number of combinations possible based on the number of codons associated with a given amino acid. Choose whatever you want to make the mRNA strand. The informational strand is the DNA copy of that. Right? So or the original strand. MRNA is just an RNA copy of it. So wherever you see a uracel, for the DNA parts of thymine. And then the informational strand and the template strands, they're complementary strands to each other, so they have to be anti parallel. So, if this is 5 prime to 3 prime, then this has to be 3 prime to 5 prime. Since it's DNA, these are the base pairings, a with t, g with c. Do that, you'll be able to write the information for all the strands involved within this given practice question, anything that's given to you like it.

Struggling with GOB Chemistry?

Tuftsin is an immunostimulator tetrapeptide having the following sequence:
Thr–Lys–Pro–Arg
Write a possible sequence for the gene (Informational & template strand) that codes for this tetrapeptide.

Watch next

Translation: Protein Synthesis practice set

Struggling with GOB Chemistry?

Tuftsin is an immunostimulator tetrapeptide having the following sequence: Thr–Lys–Pro–ArgWrite a possible sequence for the gene (Informational & template strand) that codes for this tetrapeptide.

Watch next

Translation: Protein Synthesis practice set

Tuftsin is an immunostimulator tetrapeptide having the following sequence:
Thr–Lys–Pro–Arg
Write a possible sequence for the gene (Informational & template strand) that codes for this tetrapeptide.