Question

Porin proteins-which form large, water-filled pores in mitochondrial and bacterial outer membranes-fold into B-barrel structures. The amino acids that face the outside of the barrel have what kind of side chains? Choose one: O polar O amphipathic o hydrophilic o hydrophobic O charged

Answer 1

Answer in Answer is hydrophobic Explanation in Hydrophobic side chain of amino acids bound because the barrel is anfiparralel in fashion and hydrophobic side chains that interact with fatty acyl groups of the membrane phospholipids, thus anchoring the protein to the membrane. That's why answer is hydrophobic.