Problem Set Reveiw Flashcards
1
Q
What lipids are enriched in the outer leaflet?
A
- sphingolipids and phosphotidyl choline
- glycolipids are only found in the outer leaflet
2
Q
What domain of transmembrane proteins traverse the lipid bilayer?
A
- hydrophobic regions of membrane proteins, not the globular regions.
3
Q
Can some phospholipids be glycosylated?
A
Yes.
4
Q
Glycolipids are found almost exclusively in what leaflet of the plasma membrane?
A
outer leaflet of the plasma membrane
5
Q
Are glycolipids present in lipid rafts?
A
No.
6
Q
What phospholipid does cholera toxin bind to to gain entry to a cell?
A
glycolipid GM1 ganglioside
7
Q
ABC transporters primarily transport:
A
- small molecules through the membrane via ATP binding and hydrolysis
8
Q
P-transporters primarily transport:
A
- ions via autophosphorylation and dephosphorylation that produce conformational changes controlling ion flow
