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An Integrated Approach for Microprotein Identification and Sequence Analysis
09:37

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Published on: July 12, 2022

Computational evidence for functionality of noncoding mouse transcripts.

Ilana Lebenthal1, Ron Unger

  • 1The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel. ilanalebenthal@gmail.com

Genomics
|March 30, 2010
PubMed
Summary
This summary is machine-generated.

This study provides computational evidence that many noncoding RNA (ncRNA) transcripts from the Fantom3 project are likely functional. These ncRNA sequences show higher conservation and expression in brain tissues compared to control sets.

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Area of Science:

  • Genomics
  • Molecular Biology
  • Bioinformatics

Background:

  • Large-scale mammalian genome transcription studies reveal extensive RNA production.
  • The functional significance of a substantial portion of these transcribed RNAs, particularly noncoding RNAs (ncRNAs), remains largely undetermined.
  • The Fantom3 project identified a large set of ncRNA transcripts requiring functional validation.

Purpose of the Study:

  • To computationally assess the functional potential of 34,030 noncoding RNA (ncRNA) transcripts identified by the Fantom3 project.
  • To investigate evolutionary conservation, expression patterns, and structural properties of these ncRNA transcripts.

Main Methods:

  • Comparative sequence analysis of Fantom3 ncRNA transcripts against human and rat genomes.
  • Examination of expressed sequence tag (EST) matches for homologous sequences.
  • Analysis of RNA expression levels in specific tissue types, particularly brain.
  • Calculation of minimal free energy of folding for ncRNA sequences.

Main Results:

  • Fantom3 ncRNA transcripts exhibit greater conservation between human and rat genomes compared to control sets.
  • Homologs of Fantom3 ncRNA sequences show increased matches to expressed sequence tags (ESTs) in human and rat.
  • A conserved subset of these ncRNAs displays elevated expression levels in brain tissues.
  • On average, Fantom3 ncRNA sequences possess lower minimal free energy of folding than control sequences.

Conclusions:

  • The Fantom3 ncRNA set displays distinct properties compared to random sequence sets.
  • These findings suggest that a significant proportion of the studied ncRNA transcripts likely possess biological functions.
  • Computational evidence supports the functional relevance of numerous ncRNA transcripts identified in mammalian genomes.