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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Lu, C. Bablanian, R. |
| Description | Author Affiliation: Lu C ( Department of Microbiology and Immunology, State University of New York, Health Science Center at Brooklyn, NY 11203, USA.); |
| Abstract | Host protein synthesis is selectively inhibited in vaccinia virus-infected cells. This inhibition has been associated with the production of a group of small, nontranslated, polyadenylylated RNAs (POLADS) produced during the early part of virus infection. The inhibitory function of POLADS is associated with the poly(A) tail of these small RNAs. To determine the origin of the 5'-ends of POLADS, reverse transcription was performed with POLADS isolated from VV-infected cells at 1 hr and 3.5 hr post infection. The cDNAs of these POLADS were cloned into plasmids (pBS or pBluescript II KS +/-), and their nucleotide composition was determined by DNA sequencing. The results of this investigation show the following: There is no specific gene encoding for POLADS. The 5' ends of POLADS may be derived from either viral or cellular RNAs. Any RNA sequence including tRNAs, small nuclear RNAs and 5'ends of mRNAs can become POLADS if they acquire a poly(A) tail at their 3' ends during infection. This nonspecific polyadenylylation found in vaccinia virus-infected cells is probably conducted by vaccinia virus poly(A)+ polymerase. No consensus sequence is found on the 5' ends of POLADS for polyadenylylation. The 5' ends of POLADS have no direct role in their inhibitory activity of protein synthesis. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 5 |
| Volume Number | 93 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1996-09-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Gene Expression Regulation, Viral Polynucleotide Adenylyltransferase Metabolism Protein Biosynthesis RNA, Messenger Chemistry RNA, Viral Vaccinia Virus Genetics Cell-Free System HeLa Cells Time Factors Vaccinia Microbiology Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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