Question

The figure shows a hypothetical tetrapeptide portion of a protein with parts labelled A-D. Which one of the following options is correct?

• A. D is the acidic amino acid-glutamic acid.
• B. C is an aromatic amino acid-tryptophan.
• C. A is the C-terminal amino acid and D is N-terminal amino acid.
• D. A is a sulphur containing amino acid methionine.

Answer 1

Answer: (A)

A - Serine (Neutral - Polar)
B - Cysteine(Neutral - Polar)
C - Tyrosine(Neutral - Polar)
D - Not an amino acid