Amino Acid Structures: Tertiary

Question 1

What are tertiary structures?

Answer 1

1. 3D arrangement of amino acids residues (R groups)

2. Residues are far apart in the sequence.

Question 2

What is myoglobin and Porins an example of?

Answer 2

tertiary structure

Question 3

How many helices are in myoglobin?

Answer 3

8

Question 4

In myoglobin, the _______ heme prosthetic group is held in a “mostly __________.”

Answer 4

Fe-Bound, hydrophobic pocket

Question 5

What makes most of myoglobin water soluble?

Answer 5

Polar charged residues on outside of surface

Question 6

What are porins?

Answer 6

class of bacterial membrane channel proteins

Question 7

What is the main structure for porins?

Answer 7

Beta Barrels

Question 8

Porins are embedded in _______.

Answer 8

Lipid Membrane

Question 9

What does a Beta sheet tube consist of?

Answer 9

anti-parallel β-strands connected together

by hydrogen bonds

Question 10

In a Beta barrel, __________ residues oriented outward lipid membrane

Answer 10

hydrophobic

Question 11

In a Beta barrel, __________ residues oriented inward toward the center of the barrel

Answer 11

Hydrophilic