PROTEIN (PP.SUB.1.SUB.3), A PROCESS FOR ENRICHING AND ISOLATING IT AND ITS USE

摘要

of the disclosure: The protein PP13 which is characterized by a) an electrophoretic mobility in the same range as albumin, b) an isoelectric point of 4.75 ? 0.15 c) a sedimentation coefficient S?20 w of 3.1 ? 0.15 s, d) a molecular weight determined by ultracentrifugation of 30,000 ? 5,000, e) a molecular weight determined in a polyacrylamide gel containing sodium dodecylsulfate (SDS) of 29,000 ? 3,000, f) an extinction coefficient < IMG > (280 nm) of 9,8 ? 0.3 and g) a carbohydrate content of < 1% (0.1? 0.05 % mannose, 0.2 ? 0.1 % galactose, 0.1 ? 0.05 % xylose, 0.2 ? 0.1 % glucosamine, and neuraminic acid not detected) is described. In addition, a process for isolating or enriching this protein and its use are indicated.