glycoproteins Flashcards
Structure
Collagen
Lubrication and protection
Epithelial mucins, synovial fluid glycoproteins
Transport
Ceruloplasmin (copper carrier), transferrin (iron carrier)
Endocrine regulation
Thyrotropin, chorionic gonadotropin, erythropoietin
Catalysis
Proteases, nucleases, glycosidases, hydrolases
Defense against infection
Immunoglobulins, complement proteins, interferon, selectins and integrins
Membrane receptors
Receptors for hormones (insulin), ACh, cholera toxin, EM radiation (rhodopsin)
Antigens
Blood group substance
Cell to cell recognition and adhesion
Fibronectin, laminin, chondronectin
Miscellaneous
Glycophorin (intrinsic RBC membrane constituent), intrinsic factor (essential for absorption of dietary vitamin b12), clotting factors (fibrinogen)