How does PRPP figure into de novo and salvage pathways for nucleotide biosynthesis.
How does PRPP figure into de novo and salvage pathways for nucleotide biosynthesis.
The ____ ring is built onto ribose-5-phosphate of PRPP for its de-novo nucleotide biosynthesis, while the ring structure of the ______ bases are synthesized separately and then coupled to ribose-5-phosphate via the C-N glycosidic bond. Select one: a. inosine : adenine b. inosine : uracil c. uracil : inosine d. uracil : adenine e. None of these
Which is not a direct precursor of pyrimidines in their de novo biosynthesis? A) glutamine B) glycine C) aspartate D) HCO3
Draw the pathway for de novo CTP biosynthesis. Show the structures and names of all reactants and products, as well as the name of the enzymes.
3. Draw an the mechanism showing how the glutamine-PRPP amidotransferase adds biosynthesis. 4. Aspartate is highly involved in the biosynthesis of purines and pyrimidines. Show the two steps where aspartate-derived nitrogen is added in the synthetic pathway leading to adenosine 5-monophosphate (AMP) 5. Show the steps where asparatate-derived nitrogen is added in the synthesis cytosine 5-monophosphate (CMP) 3. Draw an the mechanism showing how the glutamine-PRPP amidotransferase adds biosynthesis. 4. Aspartate is highly involved in the biosynthesis of purines and...
2-Deoxynucleotides essential for DNA synthesis are produced by? A. Via the Salvage Pathway, where 2-deoxy-PRPP donates the deoxy sugar to make the appropriate nucleotide B. A parallel pathway in which 2-deoxyribose-5 P is used in place of ribose-5-P in the biosynthesis C. The conversion of nucleosides to 2-deoxynucleosides D. The conversion of ADP, GDP, CDP and TDP to 2-deoxynucleotides E. The conversion to ADP, GDP, CDP and UDP to 2-deoxynucleotides
1. X10 PTS) Draw the pathway for de novo CTP biosynthesis. Show the structures and names of all reactants and products, as well as the names of the enzymes. You do not need to draw the structures of ATP, NAD+, CoA, etc., but do show them as reactants or products in the appropriate places. You do not need to show the mechanisms of the enzymes.
Compare and contrast the de novo synthesis of purine and pyrimidine ribonucleotides. Move each phrase to the appropriate category. If a phrase does not describe either purine or pyrimidine ribonucleotide synthesis, move it to the "Neither" category. Both Neither Purine ribonucleotide synthesis Pyrimidine ribonucleotide synthesis Answer Bank requires PRPP uses NADPH as a reducing agent requires two or more ATP-dependent reactions orotate is an intermediate base assembled on ribose ring inosinate (IMP) is an intermediate base is formed and then...
5. As indicated in the KEGG pathways for fatty acid degradation and biosynthesis which pathway does NOT use acetyl-CoA as a substrate? A. citric acid cycle B. butanoate metabolism C. fatty acid biosynthesis D. glycolysis 6. Which statement is consistent with the comparison of fatty acid biosynthesis in humans and in Helicobacter pylori 2017? A. Both organisms use the same multifunctional enzyme B. Humans use separate proteins to catalyze each step, while H. pylori 2017 uses one multifunctional enzyme to...
Discuss the mechanism of action of Tylenol. How does it work? What biological pathways are involved?
How does the de Broglie wavelength of an electron change if its momentum increases? How does the de Broglie wavelength of an electron change if its kinetic energy decreases?