Genetic context and structural diversity of class 1 integrons from human commensal bacteria in a hospital intensive care unit.

Abstract:

:Most surveys for class 1 integrons are at least partly predicated on PCR screening that targets integron conserved regions. However, class 1 integrons are structurally diverse, so dependence on conserved regions may lead to missing clinically relevant examples of class 1 integrons. Here, we surveyed a commensal population of bacteria from patients in an intensive care unit to identify class 1 integrons irrespective of their structure or genetic context. We identified several examples of class 1 integrons linked to complete Tn402-like or Tn402 hybrid transposition modules and diverse insertion points with respect to the inverted repeat IRi boundary. The diversity and abundance of class 1 integrons identified are such that many novel elements seen here would not have been identified by commonly used methods, and they revealed an additional level of complexity.

authors

Betteridge T,Partridge SR,Iredell JR,Stokes HW

doi

10.1128/AAC.01831-10

subject

Has Abstract

pub_date

2011-08-01 00:00:00

pages

3939-43

issue

8

eissn

0066-4804

issn

1098-6596

pii

AAC.01831-10

journal_volume

55

pub_type

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