Types of Proteins

Question 1

What is a globular protein (features)?

Answer 1

• Spherical
• Tertiary structure
• Hydrophilic amino acids on outside
• Hydrophobic shielded inside
• Soluble in water

Question 2

What are some examples of globular proteins?

Answer 2

• Plasma proteins
• Enzymes
• Haemoglobin

Question 3

What is haemoglobin made up of?

Answer 3

• 2 alpha and 2 beta subunits
• Haem group (Fe2+) (prosthetic group)

Question 4

What is a conjugated protein?

Answer 4

Any protein that carries a prosthetic group

Question 5

What is a fibrous proteins (features)?

Answer 5

• Strands (covalent bonds, disulfide bridges)
• Hydrogen bonds
• Insoluble so structural support

Question 6

What are some examples of fibrous proteins?

Answer 6

• Collagen (connective tissues)
• Keratin (bones)
• Elastin (cartilage)