tomato_species_unigenes.global_versionmapping.tab is a tabular file that contains the relations between the different unigene assembly for the transcriptomic sequences in SGN. The mapping was done using the sequences members (SGN-E) of each unigene (SGN-U).

 This file has the following columns:
 -f1 library_shortname
 -f2 SGN est accession (SGN-E)
 -f3 current preprocessing tag for the mRNA sequence
 -f4 SGN Unigene Build #4 (2001-04-19),  Lycopersicon esculentum#1
 -f5 SGN Unigene Build #6 (2002-12-20),  Lycopersicon esculentum#2
 -f6 SGN Unigene Build #9 (2002-12-20),  Lycopersicon Combined#1
 -f7 SGN Unigene Build #13 (2003-08-20), Lycopersicon Combined#2
 -f8 SGN Unigene Build #18 (2004-06-30), Lycopersicon Combined#3 (SGN accessions for TOM1 and TOM2 )
 -f9 SGN Unigene Build #23 (2006-06-27),  Tomato200607#1 (tomato_species#1)
 -f10 SGN Unigene Build #45 (2009-03-11), Tomato200607#2 (tomato_species#2) (CURRENT)