With the accomplishment of the genome draft sequences, identification of functional elements in genome has become an urgent task. Full-length cDNAs provide an important resource for gene identification and their preci...With the accomplishment of the genome draft sequences, identification of functional elements in genome has become an urgent task. Full-length cDNAs provide an important resource for gene identification and their precise structural feature determination. It also provides a basis for genomic element definition. As many regulatory elements are around transcription start sites(TSSs), precise localization of TSSs in the genome becomes a critical step for identifying the associated core promoters. Massive parallel snapshot of TSSs at a particular time under a specific experimental condition makes it possible to globally analyze important regulatory elements around TSSs and further construct transcriptional regulatory networks. In this paper, we first reviewed two important full-length cDNA cloning techniques: cap-trapper technique and oligo-capping technique. Then,we introduced deepCAGE, a cap-trapper and deep sequencing-based TSS profiling technique, and its applications in the research of transcriptional regulation.展开更多
基金the National Natural Science Foundation of China(Nos.1137420,91129000,21273148,91229108,31370750 and 21303104)the National Basic Research Program(973) of China(No.2010CB529205)
文摘With the accomplishment of the genome draft sequences, identification of functional elements in genome has become an urgent task. Full-length cDNAs provide an important resource for gene identification and their precise structural feature determination. It also provides a basis for genomic element definition. As many regulatory elements are around transcription start sites(TSSs), precise localization of TSSs in the genome becomes a critical step for identifying the associated core promoters. Massive parallel snapshot of TSSs at a particular time under a specific experimental condition makes it possible to globally analyze important regulatory elements around TSSs and further construct transcriptional regulatory networks. In this paper, we first reviewed two important full-length cDNA cloning techniques: cap-trapper technique and oligo-capping technique. Then,we introduced deepCAGE, a cap-trapper and deep sequencing-based TSS profiling technique, and its applications in the research of transcriptional regulation.
