Please use this identifier to cite or link to this item: http://repositorio.unifesp.br/handle/11600/29702
Title: Identification of transcription elements in the 5 ' intergenic region shared by LON and MDJ1 heat shock genes from the human pathogen Paracoccidioides brasiliensis. Evaluation of gene expression
Authors: Batista, Wagner L.
Barros, Tania F.
Goldman, Gustavo H.
Morais, Flavia V.
Puccia, Rosana
Universidade Federal de São Paulo (UNIFESP)
Universidade Federal da Bahia (UFBA)
Universidade de São Paulo (USP)
Univ Vale Paraiba
Keywords: Paracoccidioides brasiliensis
MDJ1
LON
transcription elements
gene expression
heat shock
oxidative stress
Issue Date: 1-May-2007
Publisher: Elsevier B.V.
Citation: Fungal Genetics and Biology. San Diego: Academic Press Inc Elsevier Science, v. 44, n. 5, p. 347-356, 2007.
Abstract: The MDJ1ILON locus is conserved among pathogenic dimorphic fungi. We have mapped using DNase I footprinting and mobility shift assays three putative heat shock elements and one AP-1 binding domain (ARE) in the 5' intergenic region shared by PbMDJ1 and PbLON (ML) from Paracoccidioides brasiliensis. the region bearing an ARE-like towards PbLON also has an opposite skn-1-like element. We studied genetically and pathogenically distinct isolates Pb18 and Pb3, where ML is polymorphic and the number of elements detected was higher. the functionality of the elements was suggested by the stimulatory response of both genes to beat shock and oxidative stress. Co-regulation occurred upon heat shock from 36 to 42 degrees C and, only in Pb3, also during mycelium to yeast transformation (26-36 degrees C). in Pb18, PbMDJ1 seemed to be preferentially expressed in yeast. Our study might help understand regulation of genes involved in fungal adaptation to the host. (c) 2006 Elsevier Inc. All rights reserved.
URI: http://repositorio.unifesp.br/handle/11600/29702
ISSN: 1087-1845
Other Identifiers: http://dx.doi.org/10.1016/j.fgb.2006.11.002
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