| 摘要 |
The protein PP19 which has (a) an electrophoretic mobility in the region between that of alpha 1 and of beta 1 globulins; (b) an isoelectric point between 4.6 and 5.4; (c) a sedimentation coefficient s20,w of 3.25+/-0.25 S; (d) a molecular weight determined in the ultracentrifuge of 36,500+/-4,000; (e) a carbohydrate fraction of 3.9+/-1.5 g/100 g (mannose 0.3+/-0.2, fucose 0.2+/-0.1, galactose 1.0+/-0.3, glucose 0.4+/-0.2, N-acetylglucosamine 1.2+/-0.3, N-acetylgalactosamine 0.1+/-0.1, and N-acetylneuraminic acid 0.7+/-0.3, each g/100 g); and (f) a particular amino acid composition, is described, as is a process for obtaining it.
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