Question

Sulphur Containing Amino Acid Are?

• A. Cystine
• B. Cysteine
• C. Methionine
• D. All of these

Answer 1

The correct option is D

All of these

Explanation for the correct answer:

Option (D) : All of these

• Methionine is the sulfur-containing amino acid, which helps in the initiation of protein synthesis. The molecular formula is ${\mathrm{C}}_5{\mathrm{H}}_{11}{\mathrm{NO}}_2\mathrm{S}$
• Cystine is a dimer that is obtained by the oxidation of cysteine. The molecular formula is ${\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{N}}_2{\mathrm{O}}_4{\mathrm{S}}_2$
• Cysteine is a semi-essential protein. Serine acts as a precursor and sulfur is derived from methionine. The molecular formula is. ${\mathrm{C}}_3{\mathrm{H}}_7{\mathrm{NO}}_2\mathrm{S}$

Hence All Of These given options are correct i.e Option (D)