3.7 Flashcards
1
Q
Features of globular proteins
A
Spherical
Compact
Water soluble (hydrophilic r groups on outside)
2
Q
Example of a globular protein
A
Insulin.
3
Q
What are conjugated proteins?
A
Globular proteins that contain a non protein component called a prosthetic group.
4
Q
Example of a prosthetic group
A
Haem (Fe+ ion) catalase and harmoglobin contain haem
5
Q
Features of haemoglobin
A
Quaternary protein Globular protein Contains prosthetic group haem Made from 4 polypeptides Two alpha two beta
6
Q
Features of catalase
A
Enzyme
Quaternary protein
Breaks down hydrogen peroxide (toxic) into water and o2
7
Q
Features of fibrous proteins
A
Long
Insoluble
8
Q
Example of fibrous proteins
A
Keratin (hair skin and nails) has sulfur containing amino acids- disulphides bridges
Elastin (in elastic fibres in walls of blood vessels and alveoli) quaternary protein. Made of topoelastin
Collagen (skin tendons ligaments)
