Cloning and transcriptional regulation of the elastase lasA gene in mucoid and nonmucoid Pseudomonas aeruginosa.
AUTOR(ES)
Goldberg, J B
RESUMO
The lasA gene (whose product is involved in the production of extracellular elastolytic activity) was isolated from a genomic bank containing DNA from Pseudomonas aeruginosa FRD1. Recombinant plasmid pELA1, containing the lasA gene, complemented the temperature-sensitive elastase mutation (lasA1) in P. aeruginosa PAO-E64. The lasA gene was physically mapped on plasmid pELA1 by deletion analysis and transposon mutagenesis. The direction of transcription of lasA was determined with a promoterless chloramphenicol acetyltransferase cartridge. The lasA-chloramphenicol acetyltransferase plasmid was transferred to isogenic mucoid and nonmucoid strains of P. aeruginosa FRD; the transcription of lasA-chloramphenicol acetyltransferase was slightly higher in the nonmucoid strain.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=211945Documentos Relacionados
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