Arabidopsis thaliana
PolyA Cleavage Site & 3' UTR Database


Welcome to AtPACdb public release Alpha 3

[11/1/2005] A. thaliana data completed. GO information will be loaded on Nov 9th.

[9/20/2005] AtPACdb moved to a new server. Please note that the AtPACdb URLS have not changed.


AtPACdb is a database of three prime (3') mRNA processing sites for Arabidopsis thaliana. 3' processing sites are also called poly-adenylation cleavage sites (or PAC sites) because they are the location that the mRNA is cleaved and a 3' polyA tail is added for most eukaryotic mRNAs. The location of these sites determines the length of the 3' untranslated region (3' UTR) of the mRNA transcript.

Current AtPACdb Statistics

Number of Genes
Number of ESTs
Number of PAC sites

AtPACdb incorporates some data from:

TAIR            TIGR            GO