Glutamic acid is coded by a letter

Options

A. S
B. C
C. Y
D. E

Answer

To determine which letter codes for glutamic acid, we can follow these steps:

1. **Understand the question**: The question asks which letter corresponds to the amino acid glutamic acid.

2. **Recall the genetic code**: Each amino acid is represented by a specific letter in the one-letter code for amino acids.

3. **Identify the options given**: The options provided are:
- A) S (Serine)
- B) C (Cysteine)
- C) Y (Tyrosine)
- D) E (Glutamic acid)

4. **Match the amino acid with its corresponding letter**:
- S stands for Serine.
- C stands for Cysteine.
- Y stands for Tyrosine.
- E stands for Glutamic acid.

5. **Conclusion**: Based on the one-letter codes for amino acids, the letter that represents glutamic acid is E.

Thus, the correct answer is option D: E.