Classification of proteins

Simple proteins

Simple proteins

Contain only amino acid in their structure, include animal and plant proteins

Conjugated proteins

Consists of a protein combined with a non protein e.g. haemoglobin

Derived proteins

Formed due to chemical or enzyme action on a protein e.g. enzyme rennin digests caseinogen to produce casein

Simple

Animal; Fibrous, globular, collagen, ovalbumin, in connective tissue of meat. Plant; glutenins, gluteninzein , wheat, maize

Conjugated

Lipoproteins, prolamines, lecithin, egg yolk

Animal proteins

Cheese ( Casein ) Milk ( Caseinogen ) Egg white ( Ovalbumin ) fish ( Collagen) Red meat ( Actin )

Plant proteins

Wheat ( Gluten ) Soya beans ( Glycinin )

Low biological value

Lack some essential amino acids, from plant sortes