Course
Cell Biology
Study Pack
Set 3 Proteins
Question 1
(Multiple Choice)
Free
The number of ways in which protein domains fold in nature is limited. Which of the following is a better estimate of this number?
A) 200
B) 2000
C) 200,000
D) 2,000,000
E) 20 million
Answer
Question 2
(Short Answer)
Free
For each of the following cartoon representations from left to right, indicate whether the protein structure is composed of only ? helices (1), only parallel ? sheets (2), only antiparallel ? sheets (3), ? helices plus parallel ? sheets (4), or ? helices plus antiparallel ? sheets (5) as repetitive secondary structure elements. Your answer would be a four-digit number composed of digits 1 to 5 only, e.g. 5513.
Images created in PyMOL, from PDB entries 1STU, 2LPC, 1SA8, and 3BOB.
Images created in PyMOL, from PDB entries 1STU, 2LPC, 1SA8, and 3BOB.
Answer
The first protein (on the left) is comp...
View full Answer
Question 3
(Multiple Choice)
Free
Which of the following is NOT the role of molecular chaperones in the folding of cellular proteins?
A) They assist proteins in folding into their correct conformations.
B) They help prevent formation of protein aggregates.
C) They specify the final three-dimensional shape of proteins.
D) They catalyze the folding of proteins in the crowded environment of the cell.
E) They make the protein-folding process in the cell more reliable.
Answer