The PER extended-spectrum beta-lactamases originate from Pararheinheimera sp.

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Ebmeyer, Stefan,1990Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för infektionssjukdomar,CARe - Centrum för antibiotikaresistensforskning,Institute of Biomedicine, Department of Infectious Medicine,Centre for antibiotic resistance research, CARe (author)

To investigate the origin of the PER extended-spectrum beta-lactamase, publicly available sequence databases were searched for PER-like genes. Three genomes from Pararheinheimera, a genus associated with water and soil environments, were found to carry PER-like genes, but lacked the ISCR1/ISPa12/ISPa13 insertion sequences (IS) commonly associated with PER in clinical isolates. Sequence analysis revealed 78-96% nucleotide identity and conserved synteny between the clinical mobile genetic elements (MGEs) encoding PER-1 and the PER locus in the Pararheinheimera genomes. Notably, PER genes were only identified in 3 of 21 Pararheinheimera and Rheinheimera genomes, whereas the genetic environment of PER genes as found in clinical MGEs was conserved in all Pararheinheimera and Rheinheimera genomes. These findings indicate that PER genes were likely acquired by a branch of the Pararheinheimera genus long before the antibiotic era. Later, PER genes were mobilized, likely through involvement of IS, from one or several Pararheinheimera species, allowing their dissemination into human pathogens.

Kristiansson, Erik,1978Gothenburg University,Göteborgs universitet,CARe - Centrum för antibiotikaresistensforskning,Institutionen för matematiska vetenskaper,Centre for antibiotic resistance research, CARe,Department of Mathematical Sciences(Swepub:gu)xkrier (author)
Larsson, D. G. Joakim,1969Gothenburg University,Göteborgs universitet,CARe - Centrum för antibiotikaresistensforskning,Institutionen för biomedicin, avdelningen för infektionssjukdomar,Centre for antibiotic resistance research, CARe,Institute of Biomedicine, Department of Infectious Medicine(Swepub:gu)xlarjo (author)
Göteborgs universitetInstitutionen för biomedicin, avdelningen för infektionssjukdomar (creator_code:org_t)

In:International journal of antimicrobial agents: Elsevier BV53:2, s. 158-641872-79130924-8579

By the author/editor: Ebmeyer, Stefan, ...; Kristiansson, Er ...; Larsson, D. G. J ...

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NATURAL SCIENCES: NATURAL SCIENCES; and Computer and Inf ...; and Bioinformatics

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Basic Medicine; and Microbiology in ...

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