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Identification of a novel steroid inducible gene associated with the ?hsd locus of Comamonas testosteroni

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dc.creatorPruneda-Paz, José Luisspa
dc.creatorLinares, Mauriciospa
dc.creatorCabrera, Julio E.spa
dc.creatorGenti-Raimondi, Susanaspa
dc.date.accessioned2020-08-19T14:44:09Z
dc.date.available2020-08-19T14:44:09Z
dc.date.created2004-01-01spa
dc.description.abstractComamonas testosteroni is a soil bacterium, which can use a variety of steroids as carbon and energy source. Even if it can be estimated that the complete degradation of the steroid nucleus requires more than 20 enzymatic reactions, the complete molecular characterization of the genes encoding these steroid degradative enzymes as well as the genetic organization of them remain to be elucidated. We have previously reported the cloning and nucleotide sequence of two steroid-inducible genes, ?hsd and stdC encoding 3?-17?-hydroxysteroid dehydrogenase and a hypothetical protein respectively, located in both ends of a 3.2 kb HindIII fragment. Herein, we report the cloning and characterization of another steroid-inducible gene, called sip48 (steroid inducible protein), located between these two genes. The analysis of Sip48 amino acid sequence predicts a protein of 438 amino acids with a molecular mass of 48.5 kDa. This protein bears high homology with conserved hypothetical proteins of unknown function described in Pseudomonas aeruginosa, Pseudomonas syringae, Pseudomonas putida, Burkholderia fungorum, Shewanella oneidensis, Pseudomonas fluorescens and Thauera aromatica. The predicted protein shows a typical structure of a leader peptide at its N-terminus. A 48.5 kDa protein encoded by the recombinant plasmid was detected by SDS–PAGE analysis of in vitro []-methionine labeled polypeptides. Analysis of gene expression indicates that Sip48 is tightly controlled at the transcriptional level by several steroid compounds. In addition, transcriptional analysis of sip48 and ?hsd in a sip48 mutant strain, indicates that both genes are transcribed as a polycistronic mRNA. lacZ transcriptional fusions integrated into the chromosome of C. testosteroni demonstrate that a steroid-inducible promoter located upstream of sip48 regulates the expression of both genes.eng
dc.format.mimetypeapplication/pdf
dc.identifier.doihttps://doi.org/10.1016/j.jsbmb.2003.10.010
dc.identifier.issnISSN: 0960-0760
dc.identifier.issnEISSN: 1879-1220
dc.identifier.urihttps://repository.urosario.edu.co/handle/10336/27836
dc.language.isoengspa
dc.publisherElsevierspa
dc.relation.citationEndPage100
dc.relation.citationIssueNo. 1
dc.relation.citationStartPage91
dc.relation.citationTitleJournal of Steroid Biochemistry and Molecular Biology
dc.relation.citationVolumeVol. 88
dc.relation.ispartofJournal of Steroid Biochemistry and Molecular Biology, ISSN: 0960-0760;EISSN: 1879-1220, Vol.88, No.1 (2004); pp. 91-100spa
dc.relation.urihttps://www.sciencedirect.com/science/article/abs/pii/S0960076004000020spa
dc.rights.accesRightsinfo:eu-repo/semantics/restrictedAccess
dc.rights.accesoRestringido (Acceso a grupos específicos)spa
dc.sourceJournal of Steroid Biochemistry and Molecular Biologyspa
dc.source.instnameinstname:Universidad del Rosario
dc.source.reponamereponame:Repositorio Institucional EdocUR
dc.subject.keywordSteroidspa
dc.subject.keywordDegradationspa
dc.subject.keywordComamonas testosteronispa
dc.titleIdentification of a novel steroid inducible gene associated with the ?hsd locus of Comamonas testosteronispa
dc.title.TranslatedTitleIdentificación de un nuevo gen inducible por esteroides asociado con el locus ?hsd de Comamonas testosteronispa
dc.typearticleeng
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersion
dc.type.spaArtículospa
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