| First Author | Nakahira K | Year | 1990 |
| Journal | J Biol Chem | Volume | 265 |
| Issue | 32 | Pages | 19786-91 |
| PubMed ID | 2246261 | Mgi Jnum | J:15731 |
| Mgi Id | MGI:63846 | Doi | 10.1016/s0021-9258(17)45441-x |
| Citation | Nakahira K, et al. (1990) Structure of the 68-kDa neurofilament gene and regulation of its expression. J Biol Chem 265(32):19786-91 |
| abstractText | The complete structure of the mouse 68-kDa neurofilament (NF-L) gene was elucidated. We cloned cDNAs corresponding to 3.5- and 2.3-kb NF-L mRNA, including their polyadenylation sites. Sequence analysis revealed that these NF-L mRNAs arose from the alternative use of two polyadenylation sites in exon 4. Promoter analysis using NF-L promoter-beta-galactosidase fusion plasmids determined regions responsible for its basic promoter activity, which were located between -328 and -36 base pairs from the transcription initiation site. These promoter fusion plasmids induced a significant level of beta-galactosidase in NF-nonproducing C6 cells as well as in NF-producing PC12h cells. The in vitro transcription assay using HeLa cell extract also showed that this promoter exhibited strong transcriptional activity. Little difference in NF-L mRNA stability was observed between the two cells. However, nuclear run-off assay revealed that the NF-L gene was not transcribed in NF-nonproducing C6 cells. These data suggest that the strong promoter activity of the NF-L gene is repressed in vivo at the transcription initiation level in a tissue-specific manner. |
