Based on this table: 1) What is the difference between subunit mass and native mass? 2) How do you tell what the likely quarternary structure of the protein is? (heterotrimer, homotrimer, etc.) ProteinABсDESubunitmass (Da)10,00015,00020,00025,00030,000Nativemass (Da)40,000120,00020,00075,00060,000Isoelectricpoint (pl)8.15.37.24.56.2

The molecular weight and the isoelectric points are characteristics of the protein that help in the…

Answered: Based on this table: 1) What is the…

Based on this table: 1) What is the difference between subunit mass and native mass? 2) How do you tell what the likely quarternary structure of the protein is? (heterotrimer, homotrimer, etc.)

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter4: Cell Structure

Section: Chapter Questions

Problem 41CTQ: How does the structure of a plasmodesma differ from that of a gap junction?

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Concept explainers

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.

Question

Based on this table:

1) What is the difference between subunit mass and native mass?

2) How do you tell what the likely quarternary structure of the protein is? (heterotrimer, homotrimer, etc.)

Protein
A
B
с
D
E
Subunit
mass (Da)
10,000
15,000
20,000
25,000
30,000
Native
mass (Da)
40,000
120,000
20,000
75,000
60,000
Isoelectric
point (pl)
8.1
5.3
7.2
4.5
6.2

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