Poring proteins farm large waterfilled pares in mitochondria

Poring proteins farm large, water-filled pares in mitochondrial and bacterial membranes, fold into beta barrel structures. The amino acids that face the outside inside of the barrel have what kind of side chains? Hydrophobic and layer public. respectively Hydrophilic and hydrophobic, respectively Hydrophylic and polar, respectively, Hydrophobic and non-polar. respectively

Solution

ANS: D. Hydrophobic and Non-Polar respectively.

Explanation:

Water soluble proteins (globular proteins) had hydrophilic outer surface and hydrophobic core, but in

- barrels (- sheets) have a hydrophilic core (interior wall of lumen) and a hydrophobic surface (lipid exposed).

The - sheets of the porin protein is composed with polar and non- polar residues. The non-polar residues face outward and interact with the non-polar lipid membrane. The inner sides of mitochondria polar residues interact with the aqueous channel.