Hi Everyone, This is a biochemistry homework problem, I really don't understand some of the questions....

Question

Question

Hi Everyone,

This is a biochemistry homework problem, I really don't understand some of the questions. Any help is greatly appreciated. Thank you!

1. Identify the steps in purine and pyrimidine biosynthesis that involve a glutamine imidotrasfer reaction.

science biology

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

Ans 1) In De novo purine biosynthesis, the first and committed step is the displacement of pyrophosphate by ammonia to produce 5-phosphoribosyl-1-amine is catalyzed by the enzyme Glutamine amidotransferase.

Even in the conversion of IMP to AMP and GMP , this enzyme comes into picture. XMP (Xanthosine monophosphate) is converted to GMP (Guanosine monophosphate) by XMP-glutamine amidotransferase.

Add a comment

Answer 2

Similar Homework Help Questions

Hi Everyone, This is a biochemistry homework problem, I really don't understand some of the questions....

Hi Everyone, This is a biochemistry homework problem, I really don't understand some of the questions. Any help is greatly appreciated. Thank you! 3. Draw an the mechanism showing how the glutamine-PRPP amidotransferase adds nitrogen to PRPP in the first comitted step of purine nucleotide biosynthesis. Compare this reaction with the addition of orotate to PRPP in the 5th step of purine biosynthesis.
Hi Everyone, This is a biochemistry homework problem, I really don't understand some of the questions....

Hi Everyone, This is a biochemistry homework problem, I really don't understand some of the questions. Any help is greatly appreciated. Thank you! 6. Draw the structure of UMP. Following standard convention, number the ribose and purine rings. Assume you used isotopically labeled C enriched aspartate as a starting material for the synthesis of this coupound. Based on your knowledge of the ring assembly identify the carbon atoms in the ring that will be 13C-enriched.
Hi Everyone, This is a biochemistry homework problem, I really don't understand some of the questions....

Hi Everyone, This is a biochemistry homework problem, I really don't understand some of the questions. Any help is greatly appreciated. Thank you! 7. Draw the structure of IMP. Following standard convention, number the ribose and purine rings. Assume you used isotopically labeled ''N enriched glycine as a starting material for the synthesis of this coupound. Based on your knowledge of the ring assembly identify atoms in the ring atom that will be 15N-enriched.

hi everyone, this is a biochemistry question I need help with explaining. Please show/explain your steps or...

hi everyone, this is a biochemistry question I need help with explaining. Please show/explain your steps or work, thank you in advance! B) Outline a known moonlighting function of one of the enzymes of the TCA. C) Outline how the TCA is regulated.
Hi Everyone, This is a biochemistry homework question, Im not sure how to even answer this,...

Hi Everyone, This is a biochemistry homework question, Im not sure how to even answer this, but please help by explaining what the correct answer can be.Thank you in advance 7) If an alien suffered a single-base deletion mutation what impact will this have on their mRNA? How can the original reading frame be restored?
Homework help.. I don't understand how to solve this problem please show steps and box answer...

Homework help.. I don't understand how to solve this problem please show steps and box answer please.. thank you for your help!! Question: If a nylon 6.6, having a number-average molar mass Mn = 3.395 kg mol-1, was produced by RA2 + RB2 step polymerization with H2O being the by-product, determine the percent conversion if 1.1 mole of RA2 and 1 mole of RB2 were used in the process.

Force homework? I'm really having a problem with these questions on my homework, and could really...

Force homework? I'm really having a problem with these questions on my homework, and could really use some help. Explanations would be really appreciated as well. 1. When you push a 1.80 kg book resting on a tabletop, it takes 1.70 N to start the book sliding. What is the frictional force exerted on the book when you push on it with a force of 0.65 N? 2. To move a large crate across a rough floor, you push on...
really don't understand this Organic Chem Problem. Please Help!!! Thank you a bunch! The following reaction...

really don't understand this Organic Chem Problem. Please Help!!! Thank you a bunch! The following reaction will give one major organic product. Edit the give structure to show the most likely organic product. Do not draw inorganic side products.
I really am not understand some of the questions my teacher is asking for this class,...

I really am not understand some of the questions my teacher is asking for this class, any help would be apreciated. This question is an assignemnt problem to be solved with exahustive search 1) Use the exhaustive search method to solve this assignment problem. Each table entry represents the cost of person n to complete job m Job-3 P-1 P-2 P-3

Hi there. I really need help with this one. I don't fully understand and don't know...

Hi there. I really need help with this one. I don't fully understand and don't know where to begin, so please explain carefully. Thanks. The picture below has species I-IV (teg = species in this case) and traits/characteristics (a-j). Classify species I-IV based on the traits (a-j) and draw a parsimony tree. What effect would it have on your classification of the species, if it was based on the amount of shared characteristics/traits? Does it change anything if 0 (zero)...

Hi Everyone, This is a biochemistry homework problem, I really don't understand some of the questions....

Homework Answers

Add Answer to:
Hi Everyone, This is a biochemistry homework problem, I really don't understand some of the questions....

Post as a guest

Earn Coins