期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1978
卷号：75
期号：7
页码：3249-3253
DOI：10.1073/pnas.75.7.3249
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Three RNA fractions with molecular weights of 200,000, 280,000, and 360,000, have been identified as the major polyadenylylated transcription products in a transplantable rat pancreatic islet cell tumor that synthesizes insulin. These three RNAs share sequence homology as demonstrated by comparisons of both partial and complete RNase T1 digestion products. The 200,000 and 280,000 molecular weight species hybridize primarily with three EcoRI restriction fragments of the rat genome having molecular weights of 1.4 X 10(6), 1.6 X 10(6), and 6.0 X 10(6). The 360,000 molecular weight species hybridizes preferentially with the 6.0 X 10(6) molecular weight DNA fragment.
