Catabolism of Amino Acids - Carbon Skeleton

Question 1

Which amino acid(s) can be transformed directly into alphaketoglutarate?

Answer 1

Just Glu

Question 2

What 4 amino acids can be tranformed into glutamate, and to which citric acid cycle intermediate does glutamate become?

Answer 2

Arg

Gln

His

Pro

-> Glu -> alphaketoglutarate

Question 3

Which amino acid(s) can be transformed directly into succinyl-CoA?

Answer 3

Ile

Met

Thr

Val

Question 4

Which amino acid(s) can be transformed directly into oxaloacetate?

Answer 4

Asp

(and Asn can become Asp)

Question 5

Which amino acids can be transformed into pyruvate?

Answer 5

Ala (<-Trp)

Ser (<- Gly and Cys)

Thr

Question 6

Which amino acid(s) can be transformed into acetyl-CoA?

Answer 6

Isoleucine

Leucine

Tryptophan

Question 7

*Which 4 amino acids are both ketogenic and glucogenic?

Answer 7

Phe

Ile

Tyr

Trp

(PITT)