Sort the following into the correct bins NOTE some items may

Sort the following into the correct bins (NOTE: some items may not fit into any of the bins!) Proteoglycan Carbohydrate-binding protein Glycoprotein erythropoetin lectins aggrecan collagen ABO blood group antigen mannose-6-phosphate receptor

Solution

1. Glycoprotein

(a) Mannose 6-phosphate receptors: MPRs are transmembrane glycoproteins that play a crucial role in targeting enzymes to lysosomes.

(b) Erythropoetin: Controls the process of erythropoiesis or red blood cell production.

2. Proteoglycans

(a) Aggrecan: Also known as cartilage-specific proteoglycan core protein (CSPCP), forms an integral part of  extracellular matrix in cartilagenous tissue.

3. Carbohydrate binding proteins

(a) Lectins: Macromolecules with numerous biological functions and are highly specific for sugar moieties.

Those that does not fit in any of the bins;

(a) ABO bloob group antigens: The antigens of the ABO blood group are basically sugars which are produced by a series of reactions in which enzymes catalyze the transfer of sugar units.

(b) Collagen: It is the structural protein, composed of a triple helix, found in the extracellular space in the various connective tissues