### Understanding the Structure of Valine at Different pH Levels**Valine** is an essential amino acid with a pI (isoelectric point) of 5.97. The structure of valine will vary depending on the pH of the environment. Below are the structures of valine at the given pH levels.#### Structure of ValineThe chemical structure of valine (Val) is shown below:``` CH3 |H2N—C—CH | | H CH3 | COOH```#### a) pH = 4.34At a pH below the isoelectric point (pI = 5.97), valine will tend to gain protons (H+) due to the acidic environment. The amino group (NH2) will become positively charged (NH3+).#### b) pH = 5.97At a pH equal to the isoelectric point, valine is in its zwitterionic form. In this state, the amino group (NH2) is protonated to NH3+, and the carboxyl group (COOH) is deprotonated to COO-.---### Explanation of DiagramsThe provided diagrams and structures would illustrate the specific forms of valine at the indicated pH levels:- **pH = 4.34:** Here, the valine will have the following form: ``` CH3 | H3N—C—CH | | H CH3 | COOH ```- **pH = 5.97:** Here, the valine will have the following zwitterionic form: ``` CH3 | H3N—C—CH | | H CH3 | COO- ```By understanding these structures, students can better grasp how amino acids behave in different pH environments, which is crucial for their roles in biological systems and protein structures.

Isoelectronic Point - It is the pH at which a molecule carries no electrical charge or is…

Answered: In the space provided, draw the…

In the space provided, draw the structure of valine (val) at each of the following pH values. Valine has a pl of 5.97. a) pH = 4.34 CH3 CH-CH, H2N-C-COOH Valine (Val) b) pH = 5.97 %3D

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter15: Solutions Of Acids And Bases

Section: Chapter Questions

Problem 15.135QE

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