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- Title
Role of cis-regulatory elements on the ring-specific hrp3 promoter in the human parasite Plasmodium falciparum.
- Authors
Gopalakrishnan, Anusha M.; López-Estraño, Carlos
- Abstract
Identification of promoter elements responsible for regulation of gene expression has been hampered by the AT richness of P. falciparum intergenic regions. Nested deletions of histidine-rich protein 3 (hrp3) promoter suggested the presence of a multipartite ring-specific element. Linker scanning (LS) of this ring-specific promoter showed that the alteration of several promoter regions decreased the luciferase activity compared to the wild-type configuration, indicating that these regions played a role in gene expression. No homology was observed by comparison of putative regulatory elements of other genes identified by bioinformatic analysis with the hrp3 enhancer, implying a different mechanism of gene regulation by the hrp3 promoter. LS and deletion analysis of the 5' untranslated region (UTR) of the hrp3 suggested that this region contains elements which interact with promoter elements to regulate gene expression. Analysis of the intron in the UTR region suggested that this region does not play a role in stage specificity in the hrp3
- Subjects
GENE expression; GENETIC regulation; HISTIDINE; AMINO acids; PARASITES
- Publication
Parasitology Research, 2010, Vol 106, Issue 4, p833
- ISSN
0932-0113
- Publication type
Article
- DOI
10.1007/s00436-010-1738-9