PolyA_DB 2: mRNA polyadenylation sites in vertebrate genes - PubMed (original) (raw)

PolyA_DB 2: mRNA polyadenylation sites in vertebrate genes

Ju Youn Lee et al. Nucleic Acids Res. 2007 Jan.

Abstract

Polyadenylation of nascent transcripts is one of the key mRNA processing events in eukaryotic cells. A large number of human and mouse genes have alternative polyadenylation sites, or poly(A) sites, leading to mRNA variants with different protein products and/or 3'-untranslated regions (3'-UTRs). PolyA_DB 2 contains poly(A) sites identified for genes in several vertebrate species, including human, mouse, rat, chicken and zebrafish, using alignments between cDNA/ESTs and genome sequences. Several new features have been added to the database since its last release, including syntenic genome regions for human poly(A) sites in seven other vertebrates and cis-element information adjacent to poly(A) sites. Trace sequences are used to provide additional evidence for poly(A/T) tails in cDNA/ESTs. The updated database is intended to broaden poly(A) site coverage in vertebrate genomes, and provide means to assess the authenticity of poly(A) sites identified by bioinformatics. The URL for this database is http://polya.umdnj.edu/PolyA\_DB2.

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