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Computational identification of microRNAs and their targets

Journal

COMPUTATIONAL BIOLOGY AND CHEMISTRY
Volume 30, Issue 6, Pages 395-407

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.compbiolchem.2006.08.006

Keywords

microRNA; miRNA; computational approach; gene regulation; minimal folding free energy index; MFEI

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MicroRNAs (miRNAs) are one class of newly identified riboregulators of gene expression in many eukaryotic organisms. They play important roles in multiple biological and metabolic processes, including developmental timing, signal transduction, cell maintenance and differentiation, diseases and cancers. miRNAs regulate gene expression at the posttranscriptional level by directly cleaving targeted mRNAs or repressing translation. Although the founding members of miRNAs were discovered by genetic screening approaches, experimental approaches were limited by their low efficiency, time consuming, and high cost. As an alternative, computational approaches were developed. Computational approaches for identifying miRNAs are based on the following major characteristics of miRNAs: hairpin-shaped secondary structures, high conservation for some miRNAs, and high minimal folding free energy index (MFEI). Computational approaches also play an important role in identifying miRNA targets. A majority of known miRNAs and their targets were identified by computational approaches. Several web-based or non-web-based computer software programs are publicly available for predicting miRNAs and their targets. (c) 2006 Elsevier Ltd. All rights reserved.

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