Fibrous/Globular Proteins Flashcards
1
Q
Shape of globular proteins
A
Spherical
2
Q
Are globular proteins soluble/insoluble and why?
A
Soluble, hydrophilic amino acids on the surface.
3
Q
Are fibrous proteins soluble/insoluble and why?
A
Insoluble as they have a large proportion of hydrophobic amino acids.
4
Q
What role do most fibrous proteins play?
A
Structural
5
Q
Where is collagen found?
A
Tendons, ligaments and skin.
6
Q
Where is keratin found?
A
Hair, fingernails and outer surface of skin.
7
Q
Where is elastin found?
A
Skin and walls of arteries.
8
Q
Main feature of collagen
A
Strong molecule due to polypeptide structure.
9
Q
Main feature of keratin.
A
Extremely strong as it contains a high proportion of cysteine forming disulphide bonds.
10
Q
Main feature of elastin
A
Elastic as it is held together by crosslinks
