Organic Chemistry · free preview
Chapter 26: Review and Practice
Proteins and peptides are large biomolecules made of α-amino acid residues linked together by amide, or peptide, bonds. Twenty amino acids are commonly found in proteins, and all except glycine have stereochemistry similar to that of L suga
1. Proteins and peptides are large biomolecules made of α-amino
Proteins and peptides are large biomolecules made of α-amino
2. Proteins have four levels of structure. Primary structure de
Proteins have four levels of structure. Primary structure de
3. Chemistry Matters — The Protein Data Bank
Chemistry Matters — The Protein Data Bank
4. If you choose, you can download the structure file to your c
If you choose, you can download the structure file to your c
5. Summary of Reactions
Summary of Reactions
6. Additional Problems
Additional Problems
7. Problem 26-23 Give the sequence of the following tetrapeptid
Problem 26-23 Give the sequence of the following tetrapeptid
8. Problem 26-27 Proteins can be cleaved specifically at the am
Problem 26-27 Proteins can be cleaved specifically at the am
9. Problem 26-31 Draw a Fischer projection of (S)-proline. Prob
Problem 26-31 Draw a Fischer projection of (S)-proline. Prob
10. Problem 26-35 Look at the side chains of the 20 amino acids
Problem 26-35 Look at the side chains of the 20 amino acids
11. Problem 26-39 Serine can be synthesized by a simple variatio
Problem 26-39 Serine can be synthesized by a simple variatio
12. Problem 26-43 Propose two structures for a tripeptide that g
Problem 26-43 Propose two structures for a tripeptide that g
13. Problem 26-47 (a) Hydrolases ydrolases (b) Lyases yases (c)
Problem 26-47 (a) Hydrolases ydrolases (b) Lyases yases (c)
14. Problem 26-51 Arginine, the most basic of the 20 common amin
Problem 26-51 Arginine, the most basic of the 20 common amin
15. Problem 26-55 Look at the structure of human insulin, and in
Problem 26-55 Look at the structure of human insulin, and in
16. Problem 26-59 Refer to Figure 26.5 and propose a mechanism f
Problem 26-59 Refer to Figure 26.5 and propose a mechanism f
17. Key Terms
Key Terms
18. - C-terminal amino acid - coenzyme - cofactor - denatured
- C-terminal amino acid - coenzyme - cofactor - denatured
19. - Edman degradation - enzyme - fibrous proteins - globular p
- Edman degradation - enzyme - fibrous proteins - globular p
20. - isoelectric point (pI) - N-terminal amino acid - peptides
- isoelectric point (pI) - N-terminal amino acid - peptides
21. - proteins - quaternary structure - residues - secondary str
- proteins - quaternary structure - residues - secondary str
22. - side chain - tertiary structure - turnover number - zwitte
- side chain - tertiary structure - turnover number - zwitte
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