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Title: Islander: A database of precisely mapped genomic islands in tRNA and tmRNA genes

Journal Article · · Nucleic Acids Research
DOI:https://doi.org/10.1093/nar/gku1072· OSTI ID:1213420
 [1];  [1];  [1]
  1. Sandia National Lab. (SNL-CA), Livermore, CA (United States)

Genomic islands are mobile DNAs that are major agents of bacterial and archaeal evolution. Integration into prokaryotic chromosomes usually occurs site-specifically at tRNA or tmRNA gene (together, tDNA) targets, catalyzed by tyrosine integrases. This splits the target gene, yet sequences within the island restore the disrupted gene; the regenerated target and its displaced fragment precisely mark the endpoints of the island. We applied this principle to search for islands in genomic DNA sequences. Our algorithm identifies tDNAs, finds fragments of those tDNAs in the same replicon and removes unlikely candidate islands through a series of filters. A search for islands in 2168 whole prokaryotic genomes produced 3919 candidates. The website Islander (recently moved to http://bioinformatics.sandia.gov/islander/) presents these precisely mapped candidate islands, the gene content and the island sequence. The algorithm further insists that each island encode an integrase, and attachment site sequence identity is carefully noted; therefore, the database also serves in the study of integrase site-specificity and its evolution.

Research Organization:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1213420
Journal Information:
Nucleic Acids Research, Vol. 43, Issue D1; ISSN 0305-1048
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 60 works
Citation information provided by
Web of Science

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Cited By (25)

Pan-genome analysis of Riemerella anatipestifer reveals its genomic diversity and acquired antibiotic resistance associated with genomic islands journal October 2019
Impacts of horizontal gene transfer on the compact genome of the clavulanic acid-producing Streptomyces strain F613-1 journal November 2018
Comparative and phylogenetic analysis of a novel family of Enterobacteriaceae-associated genomic islands that share a conserved excision/integration module journal July 2018
Cumulative acquisition of pathogenicity islands has shaped virulence potential and contributed to the emergence of LEE-negative Shiga toxin-producing Escherichia coli strains journal January 2019
Microbial genomic island discovery, visualization and analysis journal June 2018
Improved genomic island predictions with IslandPath-DIMOB journal February 2018
PPR-Meta: a tool for identifying phages and plasmids from metagenomic fragments using deep learning journal June 2019
IslandViewer 4: expanded prediction of genomic islands for larger-scale datasets journal May 2017
Genome Sequences of Burkholderia thailandensis strains E421, E426, and DW503 journal January 2020
Systematic discovery of natural CRISPR-Cas12a inhibitors journal September 2018
Draft Genome Sequence of Sinorhizobium meliloti Strain CXM1-105 journal January 2019
xenoGI: reconstructing the history of genomic island insertions in clades of closely related bacteria journal February 2018
Horizontal acquisition of hydrogen conversion ability and other habitat adaptations in the Hydrogenovibrio strains SP-41 and XCL-2 journal May 2019
Identification of virulence factors and antibiotic resistance markers using bacterial genomics journal March 2016
Horizontally Acquired Homologs of Xenogeneic Silencers: Modulators of Gene Expression Encoded by Plasmids, Phages and Genomic Islands journal January 2020
Genome-Wide Analyses Revealed Remarkable Heterogeneity in Pathogenicity Determinants, Antimicrobial Compounds, and CRISPR-Cas Systems of Complex Phytopathogenic Genus Pectobacterium journal November 2019
New candidates for regulated gene integrity revealed through precise mapping of integrative genetic elements journal March 2020
Genome Sequences of Burkholderia thailandensis Strains E421, E426, and DW503 journal May 2020
Computational methods for predicting genomic islands in microbial genomes journal January 2016
panRGP: a pangenome-based method to predict genomic islands and explore their diversity journal December 2020
The 2015 Nucleic Acids Research Database Issue and Molecular Biology Database Collection journal January 2015
Experimental single-strain mobilomics reveals events that shape pathogen emergence journal July 2016
Precise mapping of new group I introns in tRNA genes posted_content January 2020
Identifying genomic islands with deep neural networks journal June 2021
A Novel Approach to Helicobacter pylori Pan-Genome Analysis for Identification of Genomic Islands journal August 2016

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