Abstract：
:Antiserum to purified fibronectin has been used to investigate transformation-associated heterogeneity in surface components antigenically related to fibronectin. Examination of extracts from surface-labeled rat cells by gradient gel electrophoresis revealed in "normal" cells the presence of two species with approximate molecular weights of 250,000 and 230,000, which were decreased in wild-type transformed cells. Reaction with antifibronectin serum revealed the selective precipitation of the two transformation-sensitive surface components. A similar experiment with ts-NT3-KR that expresses a normal phenotype at 37 degrees and a transformed morphology at 33 degrees did not reveal a markedly altered surface labeling pattern at both temperatures. However, reaction with antifibronectin serum did show a weak but detectable recognition of a 230,000-dalton doublet in the cells grown at 37 degrees, and immune precipitation of components in the 100,000- and 60,000-dalton region in cells grown at 33 degrees. Experiments with normal mouse cells revealed a different ratio of two fibronectin-related external proteins with similar molecular weights to those seen in normal rat cells.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Rieber M,Rieber MSsubject
Has Abstractpub_date
1979-05-01 00:00:00pages
1803-6issue
5eissn
0008-5472issn
1538-7445journal_volume
39pub_type
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