Let's consider some Structure-Function Relationships! Match each function with the membrane protein you think would be the best choice. (You can only use each one once.)
Added by Ruth C.
Step 1
Let's think step by step. Show more…
Show all steps
Your feedback will help us improve your experience
Shaiju T and 88 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
We have studied 4 examples of integral membrane proteins, including one composed of a single polypeptide (the NGF receptor) and 3 that have several subunits. For these 4 integral membrane proteins shown below, match them with ALL the respective function(s) using the corresponding letters. When entering your answer, the order does not matter, but be sure to use capital letters and a space between letters (no commas or other characters). Membrane protein: (1) NGF receptor (put your answers in Blank 1) (2) ligand-gated Na channel (put your answers in Blank 2) (3) Na/glucose symporter (put your answers in Blank 3) (4) Na/K ATPase (put your answers in Blank 4) Function: (A) interacts with species from outside the cell (B) transports species across the membrane AGAINST their concentration gradient (C) transports species across the membrane DOWN their concentration gradient (D) has enzyme activity (E) can affect the magnitude of the Na gradient across the membrane Blank # 1: Blank # 2: Blank # 3: Blank # 4:
Shaiju T.
How do the positions of the membrane proteins relate to their functions? (
Monisha S.
For each of the following proteins, indicate: i) What signal sequence (sorting signal) it will have (if any). ii) What compartments it will pass through, and in what order, before it gets to its final destination. iii) Any modifications the protein may undergo on its way. For example (use this example to help you answer these questions): ACE2: a transmembrane protein involved in the renin-angiotensin pathway i. ER signal sequence ii. ER > vesicle > Golgi > constitutive pathway for insertion in plasma membrane iii. Cleavage of the signal sequence, and it could have other alterations like the addition of disulfide bonds A. Elastin: a protein found in the extracellular matrix (aka: outside the cells) i. ii. iii. B. Citrate synthase: a mitochondrial enzyme in the citric acid cycle i. ii. iii. C. Vimentin i. ii. iii. D. Receptor Tyrosine Kinase i. ii. iii.
Josee P.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD