You Are Characterizing an Isolated Membrane Protein

Essay

You are characterizing an isolated membrane protein.The protein is exposed on both sides of the membrane.Over much of the central part of its surface,there are hydrophobic amino acids,while the ends are hydrophilic.It crosses the membrane a number of times.There is an opening in the center of this protein lined by hydrophilic amino acids.What kind of protein is this and what is its probable function?