Structure of 5' region of human Tenascin-R gene and characterization of its promoter

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Abstract

The tenascin-R (TN-R) gene encodes a multidomain extracellular matrix protein belonging to the tenascin family, previously detected only in the central nervous system. In this report, we describe the structure of the 5' region of the human TN-R gene and characterize the activity of its promoter. We cloned two previously unreported nontranslated exons (exons 1 and 2, 539 and 101 bp in length, respectively) separated by a large (≤40-kb) intron. The intron between exons 2 and 3 (containing the ATG codon) is 122 kb in length. Tenascin-R transcripts in fetal, adult, and neoplastic human brain contain both exons 1 and 2, as demonstrated by S1 nuclease analysis and reverse transcriptase-polymerase chain reaction. The human TN-R promoter displays relatively unusual features in terms of sequence in that it lacks any TATA box, CAAT box, GC-rich regions, or initiator element. The promoter displays its activity only in cultured cells of neural and glial origin, not in transformed epithelial cells and melanoma cells. All the elements required for the full and cell-specific activity of the promoter are contained in the 57-bp sequence closest to the transcription startpoint.

Original languageEnglish
Pages (from-to)275-282
Number of pages8
JournalDNA and Cell Biology
Volume17
Issue number3
Publication statusPublished - 1998

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vpr Genes
Exons
Introns
GC Rich Sequence
Tenascin
TATA Box
Extracellular Matrix Proteins
Reverse Transcriptase Polymerase Chain Reaction
Codon
Neuroglia
Cultured Cells
Melanoma
Central Nervous System
Epithelial Cells
tenascin R
Brain

ASJC Scopus subject areas

  • Cell Biology
  • Genetics
  • Molecular Biology

Cite this

Structure of 5' region of human Tenascin-R gene and characterization of its promoter. / Gherzi, R.

In: DNA and Cell Biology, Vol. 17, No. 3, 1998, p. 275-282.

Research output: Contribution to journalArticle

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