Porin proteins form large, barrel-like channels in the membrane.Which of the following statements about these channels is FALSE?

Question

Quizplus · Accepted Answer

Porin proteins are made primarily of β sheets, not α helices. The β sheets form the barrel-like structure of the channels. The alternating hydrophobic and hydrophilic amino acids are also characteristic of porin proteins, as they allow for the protein to span the membrane while also creating a selective pore for certain molecules to pass through. However, porin proteins are capable of forming narrow channels, which can be regulated to allow for selectivity of molecules.

Porin Proteins Form Large, Barrel-Like Channels in the Membrane