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Title: (Meta)genomic insights into the pathogenome of Cellulosimicrobium cellulans

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep25527· OSTI ID:1323386
 [1];  [2];  [1]
  1. Univ. of Delhi, Delhi (India). Dept. of Zoology
  2. Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Chicago, Chicago, IL (United States). Dept. of Surgery; Marine Biological Lab., Woods Hole, MA (United States)

Despite having serious clinical manifestations, Cellulosimicrobium cellulans remain under-reported with only three genome sequences available at the time of writing. Genome sequences of C. cellulans LMG16121, C. cellulans J36 and Cellulosimicrobium sp. strain MM were used to determine distribution of pathogenicity islands (PAIs) across C. cellulans, which revealed 49 potential marker genes with known association to human infections, e.g. Fic and VbhA toxin-antitoxin system. Oligonucleotide composition-based analysis of orthologous proteins (n = 791) across three genomes revealed significant negative correlation (P < 0.05) between frequency of optimal codons (Fopt) and gene G+C content, highlighting the G+C-biased gene conversion (gBGC) effect across Cellulosimicrobium strains. Bayesian molecular-clock analysis performed on three virulent PAI proteins (Fic; D-alanyl-D-alanine-carboxypeptidase; transposase) dated the divergence event at 300 million years ago from the most common recent ancestor. Synteny-based annotation of hypothetical proteins highlighted gene transfers from non-pathogenic bacteria as a key factor in the evolution of PAIs. Additonally, deciphering the metagenomic islands using strain MM's genome with environmental data from the site of isolation (hot-spring biofilm) revealed (an)aerobic respiration as population segregation factor across the in situ cohorts. Furthermore, using reference genomes and metagenomic data, our results highlight the emergence and evolution of PAIs in the genus Cellulosimicrobium.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE; Department of Biotechnology (DBT), India; National Bureau of Agriculturally Important Microorganisms (NBAIM), India
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1323386
Journal Information:
Scientific Reports, Vol. 6, Issue 6; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 13 works
Citation information provided by
Web of Science

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Cited By (5)

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Draft Genome Sequence of Multidrug-Resistant Cellulosimicrobium sp. Strain KWT-B, Isolated from Feces of Hirundo rustica journal July 2017