학술논문
An immunochemical study of proteins with SP1 determinants in native and acidified pregnancy serum
Document Type
Original Paper
Author
Source
Archives of gynecology. September 1981 230(4):283-291
Subject
Language
English
ISSN
0170-9925
1432-0711
1432-0711
Abstract
Summary:The α and ß forms of the pregnancy-associated protein, SP1 , have been studied in late pregnancy serum and in similar serum after acidification. In both sera only two forms of the protein, SP1 α and SP1 ß, could be found; both reacting with antisera against SP1 . On gel chromatography these two forms could be separated, with the intermediate effluent containing a varying mixture of both proteins. Immunoelectrophoresis of the effluent fractions from gel chromatography showed rocket shaped immunoprecipitates whose morphology depended on the mixture of SP1 α and SP1 ß. Crossed immunoelectrophoresis confirmed that only two proteins could be defined with SP1 antisera; the front running protein having an α2 electrophoretic mobility and a molecular weight of 430,000, while the slower moving component had the electrophoretic mobility of a ß1 globulin and a molecular weight of 90,000.