Biochem classification of proteins

Active proteins

• Have the ability to bind
  with other molecules

Passive proteins

• Do not have the ability
  to bind with molecules
  to perform their
  function.

simple proteins

These proteins contains only amino acid, as structural components

Conjugated Proteins

Are proteins that are made of: Amino acids (like all proteins) + Another non-protein part (called a prosthetic group)

Chromoproteins

Proteins combined with a colored pigment

Mucoproteins

Proteins with a high amount of carbohydrate

Glycoprotein

Proteins with sugar (carbohydrate) chains attached

Nucleoprotein

Proteins combined with nucleic acids (DNA or RNA)

Lipoprotein

Protein combined with lipids (fats)

Flavoprotein

Protein combined with flavin, which comes from vitamin B2

Metalloprotein

Protein combined with a metal ion

Phosphoprotein

Protein combined with a phosphate group

Derived Proteins

• Are proteins that are formed from simple or conjugated proteins through:

• Physical changes (like heat)

• Chemical changes (like enzymes or acids)

Primary Derivative Proteins

• Formed by slight changes to native
  (original) proteins

• Changes could be due to heat, acids,
  or alkalis

• Still large and not fully broken down

Secondary Derivative Proteins

• Formed by further breakdown of
  proteins into smaller units

• Often occurs during digestion

1. protein

2. protean

3. metaprotein

4. proteoses

5. peptones

6. peptides

7. amino acids

stages of protein breakdown

Fibrous protein

• structural protein of animals, which includes nails and other proteins of the hair, skin, nails and connective tissue

• arranged in parallel along a single axis

• insoluble in water

• resistant to denaturation

Globular protein

• Arranged in a tight, compact, spherical shape

• soluble in water

• more sensitive to denaturation

structural proteins

proteins that help build, support the shape of our body parts.

contractile proteins

proteins that helps muscles move by allowing them to contract and relax

enzymes

speed up chemical reactions in the body

hormones

act as a messenger to control body activities

Transport proteins

carry substances throughout the body

protective/defensive proteins

help the body from harm

storage proteins

store important substance for later use

toxins

proteins that can be harmful as poison