Membrane Bound Proteins Examples Flashcards Preview

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Flashcards in Membrane Bound Proteins Examples Deck (16):
1

Where is insulin released and when?

-Released by the pancreas when blood sugar levels are high

2

What does insulin bind to

-Insulin binds to insulin receptor protein, causing the cell to open the typically closed glucose transport protein

-This allows glucose to enter the cell from the blood

3

What happens after insulin binds to the insulin receptor protein

1) Insulin binds to insulin receptor Protein
2) Reaction happens inside (Causes change)
3) Glucose transport protein opens

4

What is ATP synthase

important enzyme that provides energy for the cell by synthesizing ATP

5

How does an enzyme protein work

Works by adding phosphate into ADP to create ATP

6

Where are enzyme proteins located?

Membrane of chloroplasts and mitochondria.

(Used in both photosynthesis and respiration, and the cell membranes of some prokaryotes)

7

Why does Hydrogen go downwards during ATP Synthase?

It is attracted to low concentration

8

Energy in ATP vs ADP

ATP had more energy

9

How does ATP Synthase work

1) Hydrogen travels down (Until equillibrium)

2) SPins the channel creating energy

3) Energy combines ADP and Pi

4) ATP is formed

10

Adhesion Proteins connect...

cells to create tissue

11

Cadherins

-Adhesion protein example

-type of transmembrane protein

-In the presence of calcium, binds cells within tissues together

12

MHC Proteins are found...

on surface of cells that belong to a particular individual

13

MHC Proteins?

-Recognition Protein Example

-They interact with the immune system to identify which cells belong to the body and which cells are foreign

14

Pump Proteins work with

ATP synthase

-ATP synthase Makes ATP

-Pump Protein pumps the H+ back up using ATP

15

Sodium/Potassium Pump

-Pump Protein example

-Na and K move against their concentration gradients (from low to high)

-Required energy in the form of ATP

16

Glucose channel protein

-Channel Protein Example

-Glucose is too large and too hydrophilic to diffuse naturally through the phospholipid bi-layer, so it needs a channel

-Glucose goes from high to low concentration so no energy is required.