Membrane Receptors and Signal Transduction — Flashcards

Flashcard 1: The major GAG synthesized by arterial smooth muscle cells is _____, which binds LDL

Answer: dermatan sulfate

Flashcard 2: The location of the synthesis of phospholipids is the _____

Answer: smooth endoplasmic reticulum.

Flashcard 3: Emeiocytosis or reverse pinocytosis requires which ion directly?_____

Answer: Ca2+

Flashcard 4: With respect to the mass ratio, the cell membrane predominantly consists of?_____

Answer: Proteins (Proteins/Lipids)

Flashcard 5: Blood group antigens and cell surface receptors for cholera & tetanus toxins are made of what type of lipids?

Answer: Glycosphingolipids

Flashcard 6: In **Type II** membrane proteins, the **N-terminus** is located on the __________ side of the membrane.

Answer: Cytosolic (inside)

Flashcard 7: The **β (beta) subunit** of the Na+-K+ ATPase pump is a glycoprotein with one membrane-spanning domain and _____ glycosylation sites.

Answer: Three

Extra: The beta (β) subunit is essential for the proper assembly and membrane targeting of the catalytic alpha (α) subunit. It contains three N-glycosylation sites.

Flashcard 8: GLUT _____, found on Liver and Kidney is a urate transporter

Answer: 9

Flashcard 9: A _____ binding protein dynamin is involved in pinching off the vesicle formed in clathrin-mediated endocytosis

Answer: GTP