You Are Characterizing an Isolated Membrane Protein

question 37

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?

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Definitions:

Absolute Value

The distance of a number from zero on the number line, without regard to direction, represented as |x|.

Function

A correspondence between an array of inputs and a choice of outputs, with the rule that each input associates with just one output.

Speed

The rate at which an object moves, calculated as distance traveled per unit of time.

\(f ( x )\)

A symbolic representation of a function in terms of \(x\), where \(f\) denotes the function and \(x\) represents the variable.