NDLI: Expression from herpesvirus promoters does not relieve the intron requirement for cytoplasmic accumulation of human beta-globin mRNA.

Content Provider	PubMed Central
Author	Gelembiuk, G. W. Wang, C. Y. Ryu, W. S. Mertz, J. E. Yu, X. M.
Abstract	Expression plasmids were constructed in which the human beta-globin gene or a variant of it precisely lacking its two introns was transcribed from its own promoter, the herpes simplex virus type 1 thymidine kinase (HSV-tk) promoter, or the immediate early promoter of human cytomegalovirus (CMV-IE). Forty two hours after transfection of these plasmids into monkey kidney cells, nuclear and cytoplasmic RNA were isolated. Quantitative S1 nuclease mapping and primer extension analysis were used to determine the relative abundances, cellular locations, and leader sizes of the accumulated beta-globin RNAs. Whereas transcripts of all of the intron-containing genes accumulated in the cytoplasm to high levels, transcripts of their cDNA variants were neither stably maintained in the nucleus nor accumulated in the cytoplasm, irrespective of the promoter from which transcription was driven. We conclude that the intron requirement for cytoplasmic accumulation of beta-globin RNA can not be circumvented by synthesis from either the promoter of the intronless HSV-tk gene or the CMV-IE promoter.
Starting Page	7231
File Format	PDF
ISSN	13624962
e-ISSN	13624962
Journal	Nucleic Acids Research
Issue Number	25
Volume Number	19
Language	English
Publisher Date	1991-12-01
Access Restriction	Open
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Genetics

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Expression from herpesvirus promoters does not relieve the intron requirement for cytoplasmic accumulation of human beta-globin mRNA.