Comparative genomic analysis of Acinetobacter oleivorans DR1 To determine strain-specific genomic regions and gentisate biodegradation

Jaejoon Jung, Eugene L. Madsen, Che Ok Jeon, Woojun Park

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The comparative genomics of Acinetobacter oleivorans DR1 assayed with A. baylyi ADP1, A. calcoaceticus PHEA-2, and A. baumannii ATCC 17978 revealed that the incorporation of phage-related genomic regions and the absence of transposable elements have contributed to the large size (4.15 Mb) of the DR1 genome. A horizontally transferred genomic region and a higher proportion of transcriptional regulator- and signal peptide-coding genes were identified as characteristics of the DR1 genome. Incomplete glucose metabolism, metabolic pathways of aromatic compounds, biofilm formation, antibiotics and metal resistance, and natural competence genes were conserved in four compared genomes. Interestingly, only strain DR1 possesses gentisate 1,2-dioxygenase (nagI) and grows on gentisate, whereas other species cannot. Expression of the nagI gene was upregulated during gentisate utilization, and four downstream open reading frames (ORFs) were cotranscribed, supporting the notion that gentisate metabolism is a unique characteristic of strain DR1. The genomic analysis of strain DR1 provides additional insights into the function, ecology, and evolution of Acinetobacter species.

Original languageEnglish
Pages (from-to)7418-7424
Number of pages7
JournalApplied and environmental microbiology
Volume77
Issue number20
DOIs
Publication statusPublished - 2011 Oct

ASJC Scopus subject areas

  • Biotechnology
  • Food Science
  • Applied Microbiology and Biotechnology
  • Ecology

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