RT Journal A1 Carninci, Piero A1 Waki, Kazunori A1 Shiraki, Toshiyuki A1 Konno, Hideaki A1 Shibata, Kazuhiro A1 Itoh, Masayoshi A1 Aizawa, Katsunori A1 Arakawa, Takahiro A1 Ishii, Yoshiyuki A1 Sasaki, Daisuke A1 Bono, Hidemasa A1 Kondo, Shinji A1 Sugahara, Yuichi A1 Saito, Rintaro A1 Osato, Naoki A1 Fukuda, Shiro A1 Sato, Kenjiro A1 Watahiki, Akira A1 Hirozane-Kishikawa, Tomoko A1 Nakamura, Mari A1 Shibata, Yuko A1 Yasunishi, Ayako A1 Kikuchi, Noriko A1 Yoshiki, Atsushi A1 Kusakabe, Moriaki A1 Gustincich, Stefano A1 Beisel, Kirk A1 Pavan, William A1 Aidinis, Vassilis A1 Nakagawara, Akira A1 Held, William A. A1 Iwata, Hiroo A1 Kono, Tomohiro A1 Nakauchi, Hiromitsu A1 Lyons, Paul A1 Wells, Christine A1 Hume, David A. A1 Fagiolini, Michela A1 Hensch, Takao K. A1 Brinkmeier, Michelle A1 Camper, Sally A1 Hirota, Junji A1 Mombaerts, Peter A1 Muramatsu, Masami A1 Okazaki, Yasushi A1 Kawai, Jun A1 Hayashizaki, Yoshihide T1 Targeting a Complex Transcriptome: The Construction of the Mouse Full-Length cDNA Encyclopedia JF Genome Research JO Genome Research YR 2003 FD June 01 VO 13 IS 6b SP 1273 OP 1289 DO 10.1101/gr.1119703 UL http://genome.cshlp.org/content/13/6b/1273.abstract AB We report the construction of the mouse full-length cDNA encyclopedia,the most extensive view of a complex transcriptome,on the basis of preparing and sequencing 246 libraries. Before cloning,cDNAs were enriched in full-length by Cap-Trapper,and in most cases,aggressively subtracted/normalized. We have produced 1,442,236 successful 3′-end sequences clustered into 171,144 groups, from which 60,770 clones were fully sequenced cDNAs annotated in the FANTOM-2 annotation. We have also produced 547,149 5′ end reads,which clustered into 124,258 groups. Altogether, these cDNAs were further grouped in 70,000 transcriptional units (TU),which represent the best coverage of a transcriptome so far. By monitoring the extent of normalization/subtraction, we define the tentative equivalent coverage (TEC),which was estimated to be equivalent to >12,000,000 ESTs derived from standard libraries. High coverage explains discrepancies between the very large numbers of clusters (and TUs) of this project,which also include non-protein-coding RNAs,and the lower gene number estimation of genome annotations. Altogether,5′-end clusters identify regions that are potential promoters for 8637 known genes and 5′-end clusters suggest the presence of almost 63,000 transcriptional starting points. An estimate of the frequency of polyadenylation signals suggests that at least half of the singletons in the EST set represent real mRNAs. Clones accounting for about half of the predicted TUs await further sequencing. The continued high-discovery rate suggests that the task of transcriptome discovery is not yet complete.