Which of the following groups of amino acids are least soluble in water?

Which of the following groups of amino acids are least soluble in water? Correct Answer Non-polar

Non-polar amino acids have side chains that are essentially hydrocarbons(sulphur in case of methionine and cysteine). This causes the amino acid water interaction to be weak and thus are sparsely soluble in water. The amino acids included in this category are alanine, valine, leucine, isoleucine, tryptophan, phenylalanine and methionine. Phenylalanine is least soluble due to its bulky aromatic side chain.

Related Questions

Natural proteins are composed primarily of 20 α-amino acids. Which one of the following statements is true for any of these amino acids in a solution of pH 1.5?