ECO:0000309

cap analysis of gene expression evidence

Term id:ECO:0000309
Term name:cap analysis of gene expression evidence
Definition:A type of transcript expression evidence based on high-throughput (HT) sequencing of the 5' ends of cDNA molecules that are selected by a cap-trapper system. [ECO:MCC]
Comment:Complementary DNA (cDNA) is synthesized from microgram quantities of mRNA using first-strand cDNA primer (oligo dT12-18) and reverse transcriptase in the presence of trehalose and sorbitol, followed by selection of full-length cDNA with biotinylated cap-trapper. Linkers are attached to the 5' ends of full-length enriched cDNAs to introduce a recognition site for the restriction endonuclease MmeI, which creates a two base overhang. After amplification, sequencing tags are concatenated for high-throughput sequencing. Resulting sort reads are aligned against a reference genome, and downstream analysis is performed.
Is a:ECO:0000009 ! transcript expression evidence
Synonym:CAGE EXACT [PMID:16489339]
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Created by:mchibucos
Creation date:2011-02-17T01:33:09Z
Is obsolete:False