Nitrogen or carbon atoms are contributed to the structure of the purine ring by amino acids, except:
A: Glycine
B: Glutamine
C: Aspartate
D: Glutamate
A: Glycine
B: Glutamine
C: Aspartate
D: Glutamate
举一反三
- Which of the following is not the direct material of de novosynthesis of purine nucleotide ? () A: glycine B: aspartate C: glutamate D: CO2 E: one carbon unit
- Which one of the<br/>following amino acids can be phosphorylated? () A: Tyrosine B: Alanine C: Aspartate D: Methionine E: Glutamine
- A. Carbon skeleton of amino acids are converted into CO2 and H2O, nitrogen is excreted from the body mostly as ammonia B. The carbon skeleton of gluconeogenic amino acid can be converted into glucose but not fat
- The form transporting and storing ammonia in the body is ( ). A: glutamate B: glutamine C: glutathione D: glycine E: urea
- Whichone<br/>is<br/>the essential amino acid?() A: glycine B: methionine C: tyrosine D: Glutamine