Types of pores

Uniport pore: One type of molecule transported

Coupled pores: Two molecules transported together

Symport: Both molecules move in the same direction eg Glucose and Na⁺ in the kidney and intestine epithelial cells.

Antiport: Molecules move in opposite directions (one in the other out), eg Na⁺ (out) and K⁺ (in).

ATPase is an antiport pore protein.

ATP is made on the mitochondria inner membranes by throwing an ATPase into reverse

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© Paul Billiet 2012