19698 Ipomoea batatas mRNA sequences were downloaded from GenBank databases CoreNucleotide and dbEST (07-May-2008). All the CoreNucleotide mRNA sequences and the dbEST sequences of libraries with less than 100 sequences were grouped into the virtual mRNA library for ipomoea_batatas (vlGB_o145mRNA). These sequences were processed using the follow software: - Seqclean (http://compbio.dfci.harvard.edu/tgi/software/) with UniVec and ColiBank95 datasets (both from NCBI database) and sol-plast-mit-ncds.fasta dataset (available in the SGN ftp site, this file contains non-codificant-sequences from mitochondria and plastids in solanaceae). - SGN perl script that analyze blast results to find possible chimera sequences. By default was used a 15 quality value per nt. 19411 Ipomoea batatas mRNA processing sequences were obtained.