Question

Classify each of the following membrane proteins into transporter, receptor, membrane fusion, membrane remodeling:

A) ATP synthase

B) Tyrosine kinases

C) Na+/K+ ATPase

D) Pancreatic Lipase

E) Synaptotagmin

F) Flipasses

G) GPCRs

H) SNAREs

Answer 1

Answer :

A)

ATP Synthase - membrane fusion protein

Fusion of a and c subunits by ATP Synthase in inner mitochondrial membrane.

B)

Tyrosine Kinase - Receptor membrane proteins

Receptor tyrosine kinases are high affinity cell surface receptors for many polypeptide growth factors and cytokines and hormones.

C)

Na K ATP ase - Transporter membrane protein

The are also called sodium potassium pump.

D)

Pancreatic lipase - receptor membrane proteins

Also as membrane fusion proteins

Ligand factor for receptor mediated lipoprotein uptake.

E)

Synaptotagmin - membrane fusion protein

In neurons it triggers complete fusion of vesicles with target membrane.

F)

Flipasses - transport membrane proteins

Transmembrane lipid transporter proteins.

G)

GPCRs - receptor membrane proteins.

They are G Protein Coupled Receptors.

H)

SNARES - fusion membrane protein

Fusion of vesicles with target membrane.