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Bioinformatics Advance Access originally published online on February 26, 2008
Bioinformatics 2008 24(8):1041-1048; doi:10.1093/bioinformatics/btn077
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© The Author 2008. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

AIMIE: a web-based environment for detection and interpretation of significant sequence motifs in prokaryotic genomes

Jan Mrázek 1,2,*, Shaohua Xie 3, Xiangxue Guo 1 and Anuj Srivastava 2

1Department of Microbiology, University of Georgia, Athens, GA 30602-2605, 2Institute of Bioinformatics, University of Georgia, Athens, GA 30602-7229 and 3Department of Computer Science, University of Georgia, Athens, GA 30602-7404, USA

*To whom correspondence should be addressed.


  Abstract

Motivation: Genomes contain biologically significant information that extends beyond that encoded in genes. Some of this information relates to various short dispersed repeats distributed throughout the genome. The goal of this work was to combine tools for detection of statistically significant dispersed repeats in DNA sequences with tools to aid development of hypotheses regarding their possible physiological functions in an easy-to-use web-based environment.

Results: Ab Initio Motif Identification Environment (AIMIE) was designed to facilitate investigations of dispersed sequence motifs in prokaryotic genomes. We used AIMIE to analyze the Escherichia coli and Haemophilus influenzae genomes in order to demonstrate the utility of the new environment. AIMIE detected repeated extragenic palindrome (REP) elements, CRISPR repeats, uptake signal sequences, intergenic dyad sequences and several other over-represented sequence motifs. Distributional patterns of these motifs were analyzed using the tools included in AIMIE.

Availability: AIMIE and the related software can be accessed at our web site http://www.cmbl.uga.edu/software.html.

Contact: mrazek{at}uga.edu

Associate Editor: Alex Bateman

Received on January 14, 2008; revised on February 21, 2008; accepted on February 22, 2008

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