What metabolic substrate(s) are produced from the carbon atoms of each of the following amino acids?
c. tyrosine

Question

What metabolic substrate(s) are produced from the carbon atoms of each of the following amino acids?

c. tyrosine

Accepted Answer

All right, hello everyone. So this question is asking us what is or are the metabolic products generated from the carbon atoms of phenylalanine during its catabolism option A says Aceto Coe and Aceto Aceto Coe. Option B says pyruvate option C says fumarate and Aceto aceto choate and option D says alpha keto booed. Now, in addition to our answer choices I have in advance written down some memory devices for this particular question. But before I discuss them individually, I just want to talk about the context behind this question, right? Recall that catabolism is essentially going from big to small, right? So you're taking a larger starting material and you're breaking it down into smaller products. So when it comes to amino acids like phenylalanine, in particular, we recall a reaction known as transamination and so in transamination, right? As the name implies, the amino group of the amino acid is being removed and transferred to a different reactant, right, a different starting material. This is going to result in the formation of an alpha keto acid. So just to clarify the amino acid is converted into an alpha keto acid as a result of trans emanation so that amino group is being removed essentially. And so depending on the original amino acid, we can get a few different products. For example, aceto acetyl coa acetylate pyruvate, oxalacetate fumarate, alpha ketoglutarate, Gluta, excuse me and succinate. If you recall these molecules, right, these products are energy producing intermediates which are very important in certain meta metabolic pathways. So now let's move on to our memory device here, the ones that I have written down on the bottom of the screen. So now these memory devices are specific to two products, two energy producing intermediates on the top, I have fumarate. The first memory device is for fumarate and the second one is for Acito Aido Koe, acito, Acito Koe. So what does this actually mean? Right. Well, the first one, the first memory device is Furious Tires flying on asphalt. These represent the amino acids that are converted into fumarate. The fu in furius represents fumarate. So now the tir represents tyrosine. The f in flying actually stands for Pheno Alanine, which is the one letter code for pheno Alanine and a sp stands for a spar date or aspartic acid. So, tyrosine phenylalanine and aspartate are converted into fumarate. That's Furious tires flying on asphalt on to now our second memory device we have Acelyn tying loose knots with flowers. The ace in Iceland stands for Acito Aido Coe, the Ty and tying represents tyrosine. The l in loose signifies lucine K is actually the one letter symbol for lying. So that's the K in knots W is the one letter code for tryptophan. So that represents that and F once again is the one letter code of pheno alanine. So we have tyrosine, leucine lysine tryptophan and phenylalanine that are converted into aceto ayo. So here we can see that phenylalanine is present in both memory devices. This means that phenylalanine is involved or can't be converted into both fumarate and aceto ayo. This means that option C is correct and there you have it. So with that being said, thank you so very much for watching and I hope you found this helpful.

What metabolic substrate(s) are produced from the carbon atoms of each of the following amino acids?
c. tyrosine

Verified video answer for a similar problem:

Key Concepts

Amino Acid Metabolism

Tyrosine Catabolism

Metabolic Substrates