Cell Junctions Flashcards
0
Q
Adherens junctions
A
Columnar –> adhesion belt
Cytoskeleton: actin
Link protein: catenins
Cell:cell adhesion molecules: cadherins
1
Q
Occluding/tight
A
Barrier
Maintain polarity - separate apical/basolateral membranes
Occludins and Claudins adhere apical surface
2
Q
Desmosomes
A
Adjacent
Cytoskeleton: intermediate
Link protein: desmoplakins
Cell:cell adhesion molecules: desmogleins
3
Q
Hemidesmosomes
A
Basement membrane
Cytoskeleton: intermediate
Link protein: desmoplakins
Cell:cell adhesion molecules: integrins
4
Q
Gap junctions
A
Selective diffusion
Connexins spore
Embryogenesis - organisation of developing sheets
Regulated by intracellular pH and Ca2+