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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Khorana, H. G. Dunn, R. Rajbhandary, U. L. Tanaka, T. Ikehara, M. Chang, S. H. Makabe, O. Ohtsuka, E. Majumdar, A. Taniyama, Y. O. |
| Abstract | mRNA for bacteriorhodopsin from Halobacterium halobium has been partially purified. By using this mRNA as template in the presence of reverse transcriptase RNA-dependent DNA nucleotidyltransferase and a 5'-[32P] synthetic oligodeoxyribonucleotide corresponding to amino acids 9-12 of bacteriorhodopsin as primer, we have isolated the major 5'-[32P]cDNA product, approximately 80 nucleotides long, and determined its sequence. Based on the cDNA sequence, the 5'-proximal sequence of bacteriorhodopsin mRNA is G-C-A-U-G-U-U-G-G-A-G-U-U-A-U-U-G-C-C-A-A-C-A-G-C-A-G-U-G-G-A-G-G-G-G-G-U-A-U-C -G-C-A-G-G-C-C-C-A-G-A-U-C-A-C-C-G-G-A-C-G-U-C-C-G. This includes the expected sequence for amino acids 1-8 and shows that bacteriorhodopsin is synthesized as a precursor that is at least 13 amino acids longer (Met-Leu-Glu-Leu-Leu-Pro-Thr-Ala-Val-Glu-Gly-Val-Ser) at the NH2 terminus. Agarose/urea gel electrophoresis of the partially purified mRNA showed several bands; of these, a major one hybridized with 5'-[32P]cDNA. These results suggest that the bacteriorhodopsin mRNA in the partially purified preparation is homogeneous in size and that it constitutes a substantial portion of the RNA preparation subjected to electrophoresis. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 6 |
| Volume Number | 78 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1981-10-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Bacteriorhodopsins Genetics Carotenoids Protein Precursors RNA, Messenger Amino Acid Sequence Cloning, Molecular Halobacterium Research Support, U.S. Gov't, Non-P.H.S. Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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