Email updates

Keep up to date with the latest news and content from Genome Biology and BioMed Central.

Open Badges Research news

The ESTs from Brazil

William Wells

Genome Biology 2000, 1:spotlight-20001115-03  doi:10.1186/gb-spotlight-20001115-03

The electronic version of this article is the complete one and can be found online at:

Published:15 November 2000

© 2000 BioMed Central Ltd

Research news

Guesses about the number of genes in the human genome vary wildly and may continue to do so even when the entire genome sequence is available. Computational methods for picking out exons that are scattered amongst vast introns yield both false positives and false negatives. This has prompted a Brazilian sequencing group to generate a quarter of a million open reading frame (ORF) expressed sequence tags (ORESTES), as they report in the November 7 Proceedings of the National Academy of Sciences (Proc Natl Acad Sci USA 2000, 97:12690-12693). Unlike other expressed sequence tags (ESTs), ORESTES do not favor one end of a transcript or another. The new collection of ORESTES includes 50.5% of the 545 genes annotated from the complete sequence of chromosome 22, but also predict a further 219 genes on chromosome 22 that were not annotated. Updated searches show that 171 of these 219 sequences are also now represented by ESTs from other projects deposited in dbEST.


  1. [] webcite

    Guesses, anyone?

  2. Shotgun sequencing of the human transcriptome with ORF expressed sequence tags.

    PubMed Abstract | Publisher Full Text | PubMed Central Full Text OpenURL

  3. [] webcite

    Proceedings of the National Academy of Sciences

  4. The DNA sequence of human chromosome 22.

    PubMed Abstract | Publisher Full Text OpenURL

  5. [] webcite