TY - JOUR T1 - Evidence of a Heparin-Binding Protein in the Plasma of the Slipper Oyster, Crassostrea iredalei AU - Najiah, M. AU - Zamani, A.I. AU - Nadirah, M. AU - Amiza, M.A. JO - Journal of Animal and Veterinary Advances VL - 11 IS - 22 SP - 4147 EP - 4155 PY - 2012 DA - 2001/08/19 SN - 1680-5593 DO - javaa.2012.4147.4155 UR - https://makhillpublications.co/view-article.php?doi=javaa.2012.4147.4155 KW - Heparin-Binding Protein (HBP) KW -Crassostrea iredalei KW -2D-electrophoresis KW -proPhenoloxidase-activating (proPO) system KW -Malaysia AB - Recognition proteins play an important role in the immunodefense system of invertebrates. The haemolymph of the Slipper oyster, Crassostrea iredalei, contains a heparin-binding protein with a molecular weight of 35 kDa as determined by SDS-PAGE analysis. The protein was purified using column chromatography. This binding protein possesses a serine protease activity thus it is capable of activating the prophenoloxidase-activating (proPO) system. However, the protein lacks β-1,3-glucanase activity. Using rabbit antiserum against the isolated protein in immunodiffusion and immunoblotting assays it produced a single precipitant and a single band, respectively. However, N-terminal amino acid sequence of BGBP: Threonine-Alanine-Arginine-Asparagine-Glutamic acid-Alanine-Asparagine-Valine was similar to Cavortin (AAT44352) and extracellular superoxide dismutase (AAY60161) from C. gigas. ER -