Screening poly(dA/dT)- cDNAs for gene identification

San Ming Wang, Scott C. Fears, Lin Zhang, Jian Jun Chen, Janet D. Rowley

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

Many genes expressed in the human genome have not been identified despite intensive efforts, we observed that the presence of long poly(dA/dT) sequences in the 3' end of cDNA templates contributes significantly to this problem, because the hybrids formed randomly between poly(dA) and poly(dT) sequences of unrelated cDNA templates lead to loss of many templates in the normalization/subtraction reactions. The low abundant copies, which account for the majority of the expressed genes, are affected in particular by this phenomenon. We have developed a strategy called screening poly(dA/dT)- cDNAs for gene identification to overcome this obstacle. Applying this strategy can significantly enhance the efficiency of genome-wide gene identification and should have an impact on many functional genomic studies in the postgenome era.

Original languageEnglish (US)
Pages (from-to)4162-4167
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume97
Issue number8
DOIs
StatePublished - Apr 11 2000

ASJC Scopus subject areas

  • General

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