Membrane Proteins

Question 1

What are peripheral proteins and what dob they have

Answer 1

the ones on the outside that look like hats
-Have hydrophilic R groups

Question 2

What is an integral protein

Answer 2

the one that runs through the membrane what allows water, glucose and ions to pass through a membrane

Question 3

List stuff about channel proteins

Answer 3

allows facilitated diffusion via pores
selective based on size
can be gates

Question 4

When do ligand gated proteins change conformation

Answer 4

when a ligand binds to it

Question 5

When do voltage proteins change conformation

Answer 5

when ion conc changes

Question 6

Describe NAKATPase

Answer 6

uses energy from ATP hydrolysis for ACTIVE TRANSPORT
establishes ion conc gradients and restores reting membrane potentials
3NA out, 2K in

Question 7

When NA binds to NAKATPase, is it phosphorylated or dephosphorylated

Answer 7

PHOSPHORYLATED

Question 8

Wen K binds to NAKATPase, is it phosphorylated or dephosphorylated

Answer 8

DEPHOSPHORYLATED

Question 9

What is NAKATPase

Answer 9

transporter protein
coupled to an energy source - pump protein

Question 10

Describe the movements within the glucose symport proteins

Answer 10

Na moves by diffusion, glucose by active transport
transported at same time and same direction
-creates sodium gradient