Membranes and Transporters Flashcards
1
Q
Outer membrane
A
Phosphatidylcholine
Sphingomyelin
Glycolipids
2
Q
Inner membrane
A
Phosphatidylserine
Phosphatidylinositol
Phosphatidylethanolamine
3
Q
GLUT 1
A
Present in brain, RBC, and ubiquitous
Km low, high affinity
4
Q
GLUT 2
A
Liver and pancreas
Km is high; low affinity
Not as specific
5
Q
GLUT 3
A
Neurons
Km is low; high affinity
6
Q
GLUT 4
A
Insulin Dependent
Skeletal muscle, adipose tissue, heart
Sequestered in vesicles until needed