Protein structure- named examples

• Proteins can act as receptors 


  Insulin receptor proteins on liver cells
• Protein can be used to from connective tissue


  Collagen
• Proteins can be biological catalysts/enzymes


  Amylase
• Proteins can be used as transport molecules


  Haemoglobin, glucose protein channel in a cell membrane
• Proteins can be used for immunity 


  Antibodies/immunoglobuluis
• Proteins can act as sensory pigments 


  Rhodopsin