Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
. Advertisement .
..3..
. Advertisement .
..4..
......... ADVERTISEMENT .........
..8..
At certain pHs the amino acids acids may be present in solutions in such a way that there is no charge on the molecules. This type of structure is described as Zwitterion or an ampholyte. The pH at which the structure is present is known as the isoelectric pH.
General guidance
It is necessary to draw the zwitter structure of methionine, an amino acid. This is done via proton transfer from carboxylic to the amino group.
Carboxylic acids that contain an amino group NH2 are referred to by the name amino acids. The skeleton of an amino acids will be as follows:
R can be an alkyl, heterocyclic or aryl group.
Zwitter Ion: A self-neutralization reaction in an amino acid creates a zwitterion. A zwitter Ion’s positive charge is equal to its negative charge. Therefore, the overall molecule has no charge and is neutral.
Step-by-step
Step 1 from 2
The given structure of methionine should be written. Encircle the amino- and carboxylic group as shown below.
Explanation
To identify the next steps of proton transfer, the carboxylic and amino groups must be identified.
Step 2 from 2
The zwitter Ion is as follows
The following is the zwitter methionine ion:
Explanation
In the preceding process the proton is transferred from the carboxylic group(COOH) to amino group NH2 in order to create the zwitter ion that is corresponding to methionine. Zwitter ions are dipolar, with the same negative and positive charges, making it neutral.
Answer
The following is the zwitter methionine ion: