- On the basis of structure of protein:
A. Simple protein:
a) Albumin : Serum albumin , Egg albumin, Lactal albumin
b) Globulin : Serum globulin, Tissue globulin and vegetable globulin
c) Prolamins : Zien ( from maize), Gliadin ( from wheat) and Hordein ( from Barley)
d) Glutelins : Glutenin ( from wheat) and Oryzenin ( from rice)
e) Scleroprotein : Keratin, Fibronin, Collagen and Elastin
B. Conjugated protein:
a) Nucleoprotein: DNA and RNA
b) Chromoprotein : Chlorophyll and Hemoglobin
c) Glycoprotein
d) Lipoprotein: Lecithin and cephalin
e) Metalloprotein: Hemoglobin and chlorophyll
C. Derived protein:
a) Peptone
b) Peptide
c) Proteases
- On the basis of role or function in the body
a. Structural protein: Collagen; connective tissue
b. Contractile protein: Myosin; muscle
c. Antibody: Gama globulin
d. Blood protein: Hemoglobin, albumin
e. Hormone: Insulin
f. Enzymes: All enzymes