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We have set up an experimental system to map the primary transcription unit of the human alpha 2 globin gene. The duplicated human alpha globin genes (alpha 2-alpha 1) were linked to the alpha globin locus Positive Regulatory Element (PRE) and stably transfected into murine erythroleukaemia cells. We then developed a quantitative reverse transcriptase, polymerase chain reaction assay to map alpha 2 primary transcripts using primer pairs derived from different parts of the alpha 2 globin gene and its 3' flanking region. This approach has revealed the presence of steady state nuclear RNA past the poly(A) site of the alpha 2 globin gene at approximately 40% of the level of unspliced intron transcript. Furthermore, these 3' flanking transcripts diminish 500 bp into the 3' flanking region, identifying this part of the alpha 2 globin gene as the principal region of termination of transcription.

Type

Journal article

Journal

Nucleic Acids Res

Publication Date

25/02/1992

Volume

20

Pages

851 - 858

Keywords

Base Sequence, Cloning, Molecular, Enhancer Elements, Genetic, Globins, Humans, Molecular Sequence Data, Multigene Family, Poly A, Polymerase Chain Reaction, RNA, Messenger, RNA-Directed DNA Polymerase, Transcription, Genetic, Transfection, Tumor Cells, Cultured