Classifying glucogenic vs ketogenic amino acids?

2020-03-04 7:57 am
Can you help me with this? I tried it twice and got it wrong twice. 

回答 (1)

2020-03-04 12:28 pm
Of all the amino acids, there are only two (Leucine and lysine) that are exclusively ketogenic. There are 5 that are both glucogenic and ketogenic (PITTT: phenylalanine, isoleucine, threonine, tryptophan and tyrosine). All other amino acids are glucogenic.

Glucogenic amino acids can be converted into intermediates of the citric acid cycle. In this way, they can be converted into pyruvate to give glucose by gluconeogenesis. Ketogenic amino acids are converted into acetyl-CoA and so can give rise to ketone bodies. 

Both types of amino acids are ultimately able to produce energy.

That should let you answer these questions, and many others that you may encounter. Learn those two ketogenic and the 5 that are both. Also learn the basic concept that distinguishes the two types, and you'll be fine.


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