Conjugated proteins: The protein which is attached to any non-protein parts (Prosthetic groups) are said to be conjugated proteins.
Conjugated proteins may be of the following types:
Nucleoprotein: The protein from which one simple protein and one nucleic acid can be formed through hydrolysis is called nucleoprotein.
Examples: Nucleoprotein and Nucleohistone.
Glycoprotein or Mucoprotein: In this conjugated protein carbohydrate remains attached to the simple protein as a prosthetic group.
Examples: Mucin of salvia, Ovomucoid of eggs.
Lipoproteins: It is a conjugated protein and simple protein.
Examples: Cell membrane, Yolk of eggs, Milk etc.
Chromoproteins: The prosthetic group of this protein is a pigment.
Examples: Flavoprotein, Biliprotine, Chlorophyll protein, Haemoglobin protein etc.
Metalloproteins: The prosthetic group of this protein is metal (Such as-Cu, Fe, Mn etc.) which remains attached to the simple protein as a co-factor.