Key role of the 3' untranslated region in the cell cycle regulated expression of the Leishmania infantum histone H2A genes: minor synergistic effect of the 5' untranslated region (original) (raw)

2009, BMC Molecular Biology

Background Histone synthesis in Leishmania is tightly coupled to DNA replication by a post-transcriptional mechanism operating at the level of translation. Results In this work we have analyzed the implication of the 5' and 3' untranslated regions (UTR) in the cell cycle regulated expression of the histone H2A in Leishmania infantum. For that purpose, L. infantum promastigotes were stably transfected with different plasmid constructs in which the CAT coding region used as a reporter was flanked by the 5' and 3' UTR regions of the different H2A genes. We report that in spite of their sequence differences, histone H2A 5' and 3' UTRs conferred a cell cycle dependent pattern of expression on the CAT reporter since de novo synthesis of CAT increased when parasites enter the S phase. Using one established L. infantum cell line we showed that CAT expression is controlled by the same regulatory events that control the endogenous histone gene expression. Thus, althoug...

Sign up for access to the world's latest research.

checkGet notified about relevant papers

checkSave papers to use in your research

checkJoin the discussion with peers

checkTrack your impact