Integral Proteins

Definition

These proteins are permanently attached within the plasma membrane. They perform various functions including transporting ions or molecules across the membrane.

Related terms

Peripheral Proteins:

These proteins are not embedded within the lipid bilayer, but are loosely attached to the outer or inner surface of the membrane.

Transmembrane Protein: A type of integral protein that spans the entirety of the biological membrane to which it is permanently attached.

Channel Proteins:

Specialized integral proteins that form pores for passive transport of ions or molecules across the cell's membrane.