## Educational Resource: Understanding Biochemical Reactions### 5. Reaction for Assembly of a Tetrapeptide**Equation:**- Serine + Proline + Alanine + Methionine → SPAM tetrapeptide**Questions:**- Is this reaction **anabolic** or **catabolic**?- Is this a **positive** or **negative** delta G reaction?- List at least three other terms you could use to describe this reaction. - [Space for Student's Answer]### 6. Reaction Involving Glutamate Synthesis**Equation:**- Glutamic acid + Ammonia + ATP → Glutamate + ADP + Pi**Questions:**- Is this reaction **anabolic** or **catabolic**?- Is this a **positive** or **negative** delta G reaction? **Explanation:**- This is actually an example of a **coupled reaction**! Briefly, explain why reaction coupling is required, and how it works in this example. - [Space for Student's Explanation]### Graphs and DiagramsThis section includes no diagrams or graphs to explain. If there were, a detailed description would be provided here.---This resource helps in analyzing biochemical reactions, focusing on whether they are building up (anabolic) or breaking down (catabolic) and understanding the energy changes that occur during these processes (delta G). Coupled reactions are also highlighted, emphasizing their role in cellular processes.

Cellular metabolism consists of both anabolic and catabolic processes. The energy released during…

Answered: 5. Consider the reaction for assembly…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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2. Selective synthesis of the tetrapeptide Ala-Val-Gly-Leu a. Work backward from Structure K to fill in the boxes in the multistep synthesis scheme below. Assume the desired product is purified after each reaction step. Boxes A, B, E, and H should each have a single amino acid with a protecting group. b. Provide names for each indicated structure, using 3-letter codes. The names do not have to take protonation state into account but should account for protecting groups. B R F name: G Boc- a Boc-amino acid name: K H₂N. OH name: 요 CF3 Start here and work backward -OEt an amino acid ethyl ester Ala-Val-Gly-Leu E H R R N=C=N N=C=N (EtOH) N=C=N R R NaOH (excess) R C name: D name: name: J name: над око CF 3 HO 요 CF3 c. Suppose that you wanted to synthesize Ala-Lys-Glu using this same multistep synthesis method. What problem would occur? Propose a conceptual idea (not specific reactions) of how the problem could be solved. (Hint: look up the functional groups present in these amino acid…
1. Provide the best coenzyme(s) for each step shown below. Give a 1–2 sentence rationale for your choice. 2. Reaction (C) can require multiple coenzymes, or the enzyme may only require one. Briefly describe how the reaction that uses only one coenzyme works. Be specific about the mechanism.
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The aromatic side chain of Trp residues in proteins and peptides can be chemically modified by two photochemical reactions using ultraviolet light (hv) at 20°C (Figure 1). hv CCI3CO₂H (10 mm), Buffer A (pH 8.0) O HO HN HN- O A. Acidic NH ww O B. Basic O c. Hydrophobic O D. Polar neutral OB. Indole NH ww Figure 1 Photochemical reactions of Trp side chain with CHCl3 and CCI₂CO₂H O A. Imidazole Each substitution on Trp replaces one hydrogen atom attached to a carbon somewhere on the indole ring. Photochemical modification percentages of various Trp residues in carbonic anhydrase at 20°C are shown in Table 1. Table 1 Photochemically Modified in Carbonic Anhydrase Reactant Buffer W4 W15 W96 W122 W190 W207 W243 51% 0% 44% A 37% 0% 0% CHCI 3 0% CHCI₂ B 0% 0% 0% 0% 0% 0% 55% CCI,CO₂H A 72% 66% 0% 100% 100% 0% 75% O c. Pyrimidine OD. Pyrrole hv W15 and W96, which are in the interior of carbonic anhydrase, are 21% and 29% modified respectively by 10 mM CHCl3 in Buffer A at 75°C, a temperature…
What is the first thing that must occur in order for the catalysis of the peptide bond to begin. What is a specificity pocket? What are the preferences of chymotrypsin due to its specificity pocket?
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5. Consider the reaction for assembly of a tetrapeptide from for amino acids: Serine + Proline + Alanine + Methionine SPAM tetrapeptide Is this reaction anabolic or catabolic? Is this a positive or negative delta G reaction? List at least three other terms you could use to describe this reaction.