Table 1 Resources for validated transcription start sites

Eukaryotic promoter database (EPD) [44]

The Eukaryotic promoter database is the smallest in size, but largely consists of manually curated entries.

DataBase of Transcriptional Start Sites (DBTSS) [45]

The DBTSS contains reliable information on the transcriptional start sites for man and mouse promoters. They exploit the oligo-capping technique to enrich their pool of clones for full-length 5'-to-3' cDNAs

H-Invitational Database (H-InvDB) [46]

H-InvDB is an international effort to integrate annotation of 41,118 full-length human cDNA clones that are currently available from six high throughput cDNA sequencing projects.

FANTOM 2 (RIKEN) [47]

The RIKEN consortium presented the FANTOM collection of RIKEN full-length cDNA clones. FANTOM stands for Functional Annotation of Mouse cDNA clones.

The Reference Sequence project (RefSeq) [48]

The Reference Sequence project aims to provide a comprehensive, integrated, non-redundant set of sequences, including full-length transcripts (mRNA)