Abstract
In Trypanosoma brucei, several genes termed ESAGs for expression site-associated genes are contained within the polycistronic transcription units of the VSG gene, and their transcription is coordinately regulated during the parasite life-cycle. Since the VSG mRNA is characterized by a drastic destabilization under conditions where translation is inhibited, we examined if this post-transcriptional control also applies to the ESAG mRNAs. While the ESAG 7/6 mRNA behaved like the VSG mRNA, the ESAG 8 and ESAG 3 mRNAs did not. We ascribe this differential behaviour to the residual transcription that still occurs only in the ESAG 7/6 region of the VSG unit under conditions where this unit is down-regulated.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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Blotting, Northern
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Cycloheximide / pharmacology
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Dactinomycin / pharmacology
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Gene Expression Regulation*
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Genes, Protozoan*
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Protein Synthesis Inhibitors / pharmacology
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Protozoan Proteins / genetics*
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Protozoan Proteins / metabolism
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RNA Processing, Post-Transcriptional
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RNA, Messenger / genetics
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RNA, Messenger / metabolism
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RNA, Protozoan / genetics
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RNA, Protozoan / metabolism
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Transcription, Genetic
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Trypanosoma brucei brucei / genetics*
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Trypanosoma brucei brucei / growth & development*
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Variant Surface Glycoproteins, Trypanosoma / genetics*
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Variant Surface Glycoproteins, Trypanosoma / metabolism
Substances
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Protein Synthesis Inhibitors
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Protozoan Proteins
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RNA, Messenger
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RNA, Protozoan
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Variant Surface Glycoproteins, Trypanosoma
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Dactinomycin
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Cycloheximide