A novel glycoprotein that binds to hyaluronic acid

D'Souza, M. ; Datta, K. (1986) A novel glycoprotein that binds to hyaluronic acid Biochemistry International, 13 (1). pp. 79-88. ISSN 0158-5231

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Hyaluronic acid binding protein (HBP) has been purified to homogeneity from normal rat brain by using Hyaluronate-Sepharose affinity chromatography. It appears as a single band in non-dissociating gel electrophoresis. The molecular weight of native protein, as determined by gel filtration is found to be 68,000 daltons, and has a single subunit of molecular weight approximately 13,500 as determined under denaturing conditions in polyacrylamide gel electrophoresis, indicating that this protein is apparently composed of five identical subunits. Amino acid analysis shows the purified HBP to be rich in glycine and glutamic acid content, and is distinct from fibronectin, link proteins, and gelatin binding proteins which are known to bind to hyaluronic acid. This protein is further characterised as sialic acid containing glycoprotein.

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