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| Content Provider | PubMed Central |
|---|---|
| Author | Watson, M. A. Milbrandt, J. |
| Abstract | The NGFI-B cDNA was previously isolated by virtue of its induction by nerve growth factor (NGF) in PC12 cells. It encodes a 61-kilodalton protein that has two regions of extensive homology with members of the steroid/thyroid hormone receptor gene family. The rat NGFI-B gene is approximately 7.6 kilobases long and is interrupted by six introns. Although the exon-intron structure of the gene is similar to those of several other members of the steroid/thyroid hormone receptor gene family, there is a novel splice site within the DNA-binding domain which suggests that NGFI-B constitutes yet another evolutionary digression from a postulated common ancestral receptor gene. Primer extension and S1 nuclease protection assays were used to determine the transcription initiation site, which displayed the heterogeneity typical of genes that lack a TATA box. Sequence analysis of the 5' flanking region revealed several GC boxes but no identifiable TATA box. Four potential AP1 binding sites were identified at nucleotides -49, -78, -222, and -242. Neither the serum response element nor the CArG box element, two sequences found in other growth factor-inducible genes, was detected in this region of the growth factor-inducible NGFI-B gene. Nevertheless, results of nuclear runoff experiments demonstrated that the NGFI-B gene was transcriptionally activated by nerve growth factor in PC12 cells. In vivo, a rapid, dramatic increase in NGFI-B mRNA was observed in the cerebral cortex, midbrain, and cerebellum of animals that experienced a convulsant-induced seizure. |
| Starting Page | 4213 |
| File Format | |
| ISSN | 10985549 |
| e-ISSN | 10985549 |
| Journal | Molecular and Cellular Biology |
| Issue Number | 10 |
| Volume Number | 9 |
| Language | English |
| Publisher Date | 1989-10-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Molecular Biology |
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