All functions of protein in body.

All fourteen functions of proteins in body :

1-Structural functions: protein found in all cells and in every part of the cells.              .eg.collagen,eastin and keratin.
2-Mechanical functions: a)elastin and keratin of hair,skin,nails and hoofs.
                      b)collagen in bone,acts like steel cables in reinforcd concrete.
4-Nearly all enzymes except RNA splicing enzyme.
5- Most hormones are proteins or poly peptide as GH and Insulin.
6-Receptors.
7-Channels and pores .
8-Contractile proteins eg.  myosin and actin.
9-Propulsion of sperm by their flagella.
10-Transport proteins : Hb,Mb,Transferrin and Ceruloplasmin.
11-Storage proteins: casein and ferritin.
13-Protective proteins: Antibodies and fibrinogen.
14-Gene regulators.