Proteins of the erythrocyte membrane

The rod-shaped spectrin proteins, which run
parallel to the erythrocyte plasma membrane,
are attached to the anion channels by ankyrin
and to the glycophorin molecules by protein 4.1.
The anion channels in erythrocytes are important
for CO2 transport. Glycophorins (A, B, C) are
transmembrane proteins with several carbohydrate
units. Actin is themain protein for muscle
contraction and cell flexibility.