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Report No.

Large-scale identification and characterization of alternative splicing variants of human gene transcripts using 56 419 completely sequenced and manually annotated full-length cDNAs

Takeda, Junichi*; Suzuki, Yutaka*; Nakao, Mitsuteru*; Barrero, R. A.*; Koyanagi, Kanako*; Jin, L.*; Motono, Chie*; Hata, Hiroko*; Isogai, Takao*; Nagai, Keiichi*; Otsuki, Tetsuji*; Kuryshev, V.*; Shionyu, Masafumi*; Yura, Kei; Go, Michiko*; Jean, T.-M.*; Danielle, T.-M.*; Wiemann, S.*; Nomura, Nobuo*; Sugano, Sumio*; Gojobori, Takashi*; Imanishi, Tadashi*

We report the first genome-wide identification and characterization of alternative splicing in human gene transcripts based on analysis of the full-length cDNAs. Applying both manual and computational analyses for 56 419 completely sequenced and precisely annotated full-length cDNAs selected for the H-Invitational human transcriptome annotation meetings, we identified 6877 alternative splicing genes with 18 297 different alternative splicing variants. A total of 37 670 exons were involved in these alternative splicing events. The encoded protein sequences were affected in 6005 of the 6877 genes. Notably, alternative splicing affected protein motifs in 3015 genes, subcellular localizations in 2982 genes and transmembrane domains in 1348 genes. Genome-wide annotations of alternative splicing, relying on full-length cDNAs, should lay firm groundwork for exploring in detail the diversification of protein function which is mediated by the alternative splicing variants.



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Category:Biochemistry & Molecular Biology



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