41. Many membrane proteins are glycoproteins and can be purified by lectin affinity chromatography. 42. The Wnt protein family includes a large number of cysteine-rich glycoproteins . 43. The gene encodes a 336 amino acid acidic glycoprotein . 44. The protein is a synaptic vesicle glycoprotein with four transmembrane domains weighing 38kDa. 45. MUC16 is a member of the mucin family glycoproteins . 46. This protein extends above the variant surface glycoprotein layer that surrounds the parasite. 47. In thogotoviruses, segment 4 encodes the glycoprotein and segment 5 the nucleoprotein. 48. It has a lipid membrane with glycoprotein surface proteins spread around the outside. 49. NCAM is a glycoprotein that is expressed on axonal and Schwann cell membranes. 50. This gene encodes a member of the tenascin family of extracellular matrix glycoproteins .