13-03-2014, 03:11 PM
The Proteins Machine
Proteins
Proteins are made of long strings of individual building blocks known as amino acids.
Proteins do the nitty-gritty jobs of every living cell.
Functions of fibrous proteins
Structural proteins function in support
Insects and spiders use silk fibers to make cocoons and webs
Collagen and elastin are used in animal tendons and ligaments
Keratin is the protein in hairs, horns and feathers
Functions of globular proteins
Storage proteins function in the storage of amino acids
Ovalbumin is the protein in egg whites
Casein is the protein in milk, source of amino acids for baby mammals