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  1. ...underwent alternative polyadenylation. In two cases, sub1 and clp1, an ovary-specific short 39 UTR isoform accumulated, and in four others, papolb, pcf11, cstf3, and pabpn1, the APA determined the identity of the last exon of the transcript, thereby affecting the coding sequence (Fig. 3C; Supplemental Fig...
  2. ...and alternative splicing. Polyadenylation in introns can lead to conversion of an internal exon to a 3′ terminal exon, which is termed composite terminal exon, or usage of a 3′ terminal exon that is otherwise skipped, which is termed skipped terminal exon. Using cDNA/EST and genome sequences, we identified...
  3. ...A comprehensive computational characterization of conserved mammalian intronic sequences reveals conserved motifs associated with constitutive and alternative splicing Rodger B. Voelker and J. Andrew Berglund 1 Institute of Molecular Biology, University...
  4. ...) database, dbEST ( Boguski et al. 1993 ), which contains highly redundant partial cDNAs, especially from the 3′ UTRs, is a rich source of information on mRNA 3′ ends. Analyzing clustered EST sequences, we previously identified multiple cases of alternate polyadenylation in mRNA ( Gautheret et al. 1998...
  5. .... For instance, it cannot represent certain isoforms with alternative 5′ or 3′ ends in which one form is subsumed by the other. Post-processing of the gene's tails based on EST clone information to identify potential polyadenylation sites with programs such as PASS ( Kan et al. 2001 ) could partially overcome...
  6. .... The trends in mouse are almost the same as in human. The extent of alternative splicing is slightly decreased, probably due to the smaller size of the EST database. The rat shows much less AS events, and the average number of isoforms does not increase by including less reliable transcripts, which is due...
  7. ...stages of gene expression. One gene regulatory mechanism used by eukaryotes is selection among alternative transcript isoforms that differ in polyadenylation [poly(A)] sites, resulting in changes either to the coding sequence or to portions of the 3′ UTR that govern translation, stability...
  8. ...to zero, the model is terminated. The tool then evaluates the ends to see if the termination points correspond to transplice or polyadenylation sites and regions of strand bias. By using all splice junctions in a region it is also able to generate alternative splice forms, but of course the short reads do...
  9. ....A. ( 1998 ) The Merck Gene Index Browser: An extensible data integration system for gene finding, gene characterization and EST data mining. Bioinformatics 14 : 2 – 13 . ↵ Gautheret D. , Poirot O. , Lopez F. , Audic S. , Claverie J.M. ( 1998 ) Alternative polyadenylation in human mRNAs: A large...
  10. ...; and (bottom) IAPEY2 elements. (Dark blue) Integrants present in one strain; (light blue) two strains; (purple) three; (light pink) four; (orange) five; (red) all six. (Bottom) Mouse chromosomes 1–19, X, and Y (alternating shading). Genome Research 871 www..org Transcriptional variation due to polymorphic ERVs...
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