Details

Autor(en) / Beteiligte

• Sekizuka, Tsuyoshi
• Matsui, Mari
• Yamane, Kunikazu
• Takeuchi, Fumihiko
• Ohnishi, Makoto
• Hishinuma, Akira
• Arakawa, Yoshichika
• Kuroda, Makoto

Titel

Complete Sequencing of the bla NDM-1-Positive IncA/C Plasmid from Escherichia coli ST38 Isolate Suggests a Possible Origin from Plant Pathogens

Ist Teil von

• PloS one, 2011-09, Vol.6 (9)

Ort / Verlag

San Francisco, USA: Public Library of Science

Erscheinungsjahr

2011

Link zum Volltext

Quelle

Electronic Journals Library

Beschreibungen/Notizen

• The complete sequence of the plasmid pNDM-1_Dok01 carrying New Delhi metallo-β-lactamase (NDM-1) was determined by whole genome shotgun sequencing using Escherichia coli strain NDM-1_Dok01 (multilocus sequence typing type: ST38) and the transconjugant E. coli DH10B. The plasmid is an IncA/C incompatibility type composed of 225 predicted coding sequences in 195.5 kb and partially shares a sequence with bla CMY-2 -positive IncA/C plasmids such as E. coli AR060302 pAR060302 (166.5 kb) and Salmonella enterica serovar Newport pSN254 (176.4 kb). The bla NDM-1 gene in pNDM-1_Dok01 is terminally flanked by two IS 903 elements that are distinct from those of the other characterized NDM-1 plasmids, suggesting that the bla NDM-1 gene has been broadly transposed, together with various mobile elements, as a cassette gene. The chaperonin groES and groEL genes were identified in the bla NDM-1 -related composite transposon, and phylogenetic analysis and guanine-cytosine content (GC) percentage showed similarities to the homologs of plant pathogens such as Pseudoxanthomonas and Xanthomonas spp., implying that plant pathogens are the potential source of the bla NDM-1 gene. The complete sequence of pNDM-1_Dok01 suggests that the bla NDM-1 gene was acquired by a novel composite transposon on an extensively disseminated IncA/C plasmid and transferred to the E. coli ST38 isolate.