PMID: 7538307Feb 1, 1995Paper

Cloning and nucleotide sequence comparison of the groE operon of Pseudomonas aeruginosa and Burkholderia cepacia

APMIS : Acta Pathologica, Microbiologica, Et Immunologica Scandinavica
P JensenP Hindersson

Abstract

By alignment of GroEL amino acid sequences from four distantly related bacteria two highly conserved domains were identified. Two oligonucleotides complementary to the conserved domains were designed based on the preferred Pseudomonas aeruginosa codon usage. The primers were used in the PCR to amplify a 900-base fragment of the P. aeruginosa groEL gene. The fragment was sequenced and the partial GroEL sequence was expanded by vectorette PCR upstream and downstream to cover the complete P. aeruginosa groE operon. The same technique was used to sequence the Burkholderia cepacia (formerly Pseudomonas cepacia) groE operon and the region immediately upstream of groES. The B. cepacia groE operon is preceded by typical -10 and -35 heat shock expression signals. A total of 2041 and 2139 bp was sequenced from P. aeruginosa and B. cepacia respectively. Each revealed two open reading frames encoding two proteins with a predicted molecular mass of 10 and 57 kDa, corresponding to GroES and GroEL respectively. The GroEL proteins show an interspecies amino acid homology of 71%, and 73% with E. coli GroEL. Both GroEL proteins are 52% homologous to the corresponding human mitochondrial GroEL protein. The sequence data confirm the existence of h...Continue Reading

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Citations

Jun 1, 1997·APMIS : Acta Pathologica, Microbiologica, Et Immunologica Scandinavica·M UlanovaN Høiby
Jan 1, 2012·Microbial Ecology in Health and Disease·Marianne B HavnesOle-Jan Iversen
May 26, 2010·Nature Reviews. Endocrinology·Malay RanaMaria E Craig

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