Sulphur containing amino acid is
(A) Cysteine # Sulfur-containing amino acids (cysteine & methionine) are generally considered to be nonpolar and hydrophobic.> In fact, methionine is one of the most hydrophobic amino acids and is almost always found on the interior of proteins.> Cysteine on the other hand does ionize to yield the thiolate anion.
Cysteine
Lysine
Arginine
Phenylalanine
Miscellaneous (Bio-Chemistry)