Part C Calculate to three decimal places the charge on a-melanotropin at pH value of 5. Express your answer using three decimal places. VE ΑΣΦ Submit Part D Request Answer Submit B Calculate to three decimal places the charge on a-melanotropin at pH value of 1. Express your answer using three decimal places. VE ΑΣΦ Request Answer ? www ?

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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**Part C**

Calculate to three decimal places the charge on α-melanotropin at pH value of 5.  
**Express your answer using three decimal places.**

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**Submit** [Button]   **Request Answer** [Link]

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**Part D**

Calculate to three decimal places the charge on α-melanotropin at pH value of 1.  
**Express your answer using three decimal places.**

[Text Input Box]

**Submit** [Button]   **Request Answer** [Link]

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There are no graphs or diagrams in this content. The sections prompt calculations regarding the charge of α-melanotropin at different pH levels, requiring numerical answers with three decimal places.
Transcribed Image Text:**Part C** Calculate to three decimal places the charge on α-melanotropin at pH value of 5. **Express your answer using three decimal places.** [Text Input Box] **Submit** [Button]   **Request Answer** [Link] --- **Part D** Calculate to three decimal places the charge on α-melanotropin at pH value of 1. **Express your answer using three decimal places.** [Text Input Box] **Submit** [Button]   **Request Answer** [Link] --- There are no graphs or diagrams in this content. The sections prompt calculations regarding the charge of α-melanotropin at different pH levels, requiring numerical answers with three decimal places.
### Properties of Some Amino Acids Found in Proteins

#### Table: Amino Acids and Their Properties

| Name         | Abbreviations 1- and 3-letter | pKₐ of Ionizing Side Chain |
|--------------|-------------------------------|----------------------------|
| Arginine     | R, Arg                        | 12.5                       |
| Aspartic acid| D, Asp                        | 3.9                        |
| Cysteine     | C, Cys                        | 8.3                        |
| Glutamic acid| E, Glu                        | 4.2                        |
| Histidine    | H, His                        | 6.0                        |
| Lysine       | K, Lys                        | 10.0                       |
| Tyrosine     | Y, Tyr                        | 10.1                       |

*Approximate values found for side chains on the free amino acids. Source: W.P. Jencks and J. Regenstein (1976) Ionization constants of acids and bases in Handbook of Biochemistry and Molecular Biology, 3rd ed., G. Fasman (ed.), CRC Press, Boca Raton, FL.*

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### Peptide Sequence: α-melanotropin

- **Sequence:** Ser–Tyr–Ser–Met–Glu–His–Phe–Arg–Trp–Gly–Lys–Pro–Val

The peptide sequence is given in the context of α-melanotropin. Assume the pKₐs of the N- and C-termini are 7.9 and 3.8, respectively. For side chains, assume the pKₐ values provided in the table.
Transcribed Image Text:### Properties of Some Amino Acids Found in Proteins #### Table: Amino Acids and Their Properties | Name | Abbreviations 1- and 3-letter | pKₐ of Ionizing Side Chain | |--------------|-------------------------------|----------------------------| | Arginine | R, Arg | 12.5 | | Aspartic acid| D, Asp | 3.9 | | Cysteine | C, Cys | 8.3 | | Glutamic acid| E, Glu | 4.2 | | Histidine | H, His | 6.0 | | Lysine | K, Lys | 10.0 | | Tyrosine | Y, Tyr | 10.1 | *Approximate values found for side chains on the free amino acids. Source: W.P. Jencks and J. Regenstein (1976) Ionization constants of acids and bases in Handbook of Biochemistry and Molecular Biology, 3rd ed., G. Fasman (ed.), CRC Press, Boca Raton, FL.* --- ### Peptide Sequence: α-melanotropin - **Sequence:** Ser–Tyr–Ser–Met–Glu–His–Phe–Arg–Trp–Gly–Lys–Pro–Val The peptide sequence is given in the context of α-melanotropin. Assume the pKₐs of the N- and C-termini are 7.9 and 3.8, respectively. For side chains, assume the pKₐ values provided in the table.
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