The amino acid shown below maybe associated with ALS (Lou Gehrig's disease) and Parkinson's disease. Which of the following is the form of this amino acid at a physiological pH?
E)None of these

Question

The amino acid shown below maybe associated with ALS (Lou Gehrig's disease) and Parkinson's disease.  Which of the following is the form of this amino acid at a physiological pH?
E)None of these

Quizplus · Accepted Answer

The three-letter code for this amino acid is Gln (glutamine). At physiological pH, glutamine exists in its zwitterionic form, meaning it has both a negatively charged carboxyl group (-COO-) and a positively charged amino group (-NH3+). Option B (11ea7c90_f256_544b_9ab2_b717c6cf61ed_TB1423_11) represents the zwitterionic form of glutamine.

The Amino Acid Shown Below Maybe Associated with ALS (Lou