Glycoproteins

How are glycoproteins formed?

within the Golgi cisternae when a protein is modified by the addition of a short chain carbohydrate of 3 to 10 sugar units linked together through condensation reactions

What role do glycoproteins play in cell-cell recognition

glycoprotein on surface is recognized by receptors on surface of another.

What is the importance of cell to cell recognition>

allows immune system cells to recognize other cells within its body

Examples of use of glycoproteins

Zona pellucida

ABO antigens

What is the zona pellucida

thick extracellular coat surrounds all mammalian eggs

What is the importance of the zona pellucida

the glycoproteins on the zona pellucida are responsible for species recognition of sperm, ensuring that sperm from one species cannot fertilize the egg of another

What is the significance of glycoproteins in red blood cells

distinguish ABO blood type

Tyoes of ABO glycoproteins

Type A - A glycoproteins

Type B - B glycoproteins

Type AB - Both type A and B

Type O - Neither A or B

What is the role of the ABO glycoproteins

stimulate antibody production if transfused into a person with a different blood group

What blood type can be given to any recipient

Type O