Classification of Proteins

Question 1

What are the classifications of proteins?

Answer 1

• number of peptide chain
• chemical composition
• shapes
• functions

Question 2

What are the number of peptide chain?

Answer 2

• monomeric protein
• multimeric protein

Question 3

Is a protein in which only one peptide chain is present

Answer 3

Monomeric protein

Question 4

Is a protein in which more than one peptide chain is present

Answer 4

Multimeric protein

Question 5

Peptide chains present are called?

Answer 5

Protein subunits

Question 6

What are the chemical composition?

Answer 6

• simple protein
• conjugated proteins
• derived protein

Question 7

What are the examples of simple proteins?

Answer 7

• Albumins - (blood)
• Globulins - (blood)
• Glutelins - (wheat)
• Prolamines - (wheat)
• Histones - thymus histone
• Protamines - Salmon sperm
• Scleroproteins - Keratin or collagen

Question 8

What are the conjugated proteins?

Answer 8

• Nucleoproteins - (virus)
• Glycoproteins - (bones)
• Phosphoproteins (casein)
• Chromoproteins - (Hemoglobin)
• Lipoproteins - Lecithin
• Metalloproteins - iron-ferritin

Question 9

What are the primary protein derivatives?

Answer 9

• proteans
• metaproteins
• coagulated proteins

Question 10

What are the secondary protein derivatives?

Answer 10

• primary proteoses
• secondary proteoses
• peptones
• peptides

Question 11

What are the shapes of proteins?

Answer 11

• Globular
• Fibrous

Question 12

• Are elongated shape
  Properties:
• simple, regular, and linear structures
• largely insoluble
• molecular weights are high
• functions: structural and support

Answer 12

Fibrous

Question 13

• Are folded into spherical or globular shapes
• properties:
• soluble
• have been crystallized
• can be denatured

Answer 13

Globular