The purification of SP1-β (pregnancy-specific β1-glycoprotein) using immobilized triazine dyes
✍ Scribed by Kevin G. McFarthing; Sarojani Angal; Peter D.G. Dean
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 761 KB
- Volume
- 122
- Category
- Article
- ISSN
- 0003-2697
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✦ Synopsis
Pregnancy-specific &glycoprotein was purified to 99% purity by sequential chromatography on carboxymethyl-cellulose (to remove other pregnancy-specific &-glycoprotein variants), Cibacron blue 3G-A-Matrex Gel, Procion turquoise MX-G-Matrex Gel, Procion red H-IBN-Matrex Gel, and rabbit anti-normal human male serum-Matrex Gel. The purification was rapid, large-scale, and gave a yield of pregnancy-specific /I,-glycoprotein of 35. I%.
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Three cDNAs encoding members of the pregnancy-specific beta 1-glycoprotein (PSG) family were isolated from human term placental cDNA library. All three cDNAs encode proteins with similar domain structure. There is a leader sequence of 34 amino acids followed by an N-domain of 109 amino acids. Immedi
Pregnancy-specific 01-glycoprotein (SP I) was assayed by particle counting immunoassay in serum from 46 healthy female blood donors, 33 patients with benign mastopathy and 84 patients with breast cancer before operation and during follow-up. Values > I pg/ 'To whom reprint requests should be address