Epithelia

Question 0

What molecules comprise adhering junctions (aka zonula adherens)?

Answer 0

Cadherins, which connect actin cytoskeleton from one cell to actin cytoskeleton of another cell

Question 1

What molecules comprise tight junctions?

Answer 1

Claudins and occludins

Question 2

What comprises desmosomes?

Answer 2

Cadherins, which bind intermediate filaments of one cell to intermediate filaments of another cell

Question 3

What protein comprises gap junctions?

Answer 3

Connexin, a transmembrane protein, which forms connexons, which form desmosomes

Question 4

What does the junctional complex consist of?

Answer 4

Zonula occludens (tight junction), zonula adherens (adhering junction) and macula adherens (desmosome)

Question 5

What special purpose do hemidesmosomes serve?

Answer 5

Anchor the cell to the BM, via transmembrane proteins known as integrins, which bind to extracellular laminins in the basement membrane