Increment of efficiency in the identification on noble genes by colony hybridization assay

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Increment of efficiency in the identification on noble genes by colony hybridization assay
Jae Wha Kim; I A Lee; Yong Hee Lee; J C Song; Yong Kyung Choe; Y S Hahn; J H Chung; Tai Wha Chung; In Seong Choe
Bibliographic Citation
Biochemistry and Molecular Biology International, vol. 44, no. 2, pp. 225-233
Publication Year
For the rapid identification of noble genes in a specific tissue by computer analysis from the cDNA sequences determined by single-pass cDNA sequencing, clone redundancy was one of the major obstacles. To facilitate the efficiency in identification of noble genes, it was necessary to reduce the number of clones to be sequenced by eliminating the redundant clones for a rapid analysis. In order to increase the probability of isolating noble sequences from the cDNA clones of human fetal liver tissue origin, colony hybridization assay was adopted and redundant clones were efficiently removed. Four cDNA clones highly redundant in the human fetal liver cDNA libraries including α-globin, γ-globin, serum albumin and H19 RNA sequences were selected as the probes. Two hundreds and sixty two cDNA clones were randomly selected and tested with the probes for hybridization properties. The identity of each cDNA clone giving positive or negative signals in the hybridization assay was determined by DNA homology search with the nucleic acid databases. Among the 76 clones giving positive signals, 57 clones (75%) were found to be identical to the probe sequences and could be eliminated by colony hybridization assay before neucleotide sequencing.
Human fetal liver cDNAredundancyprescreeninghybridization assay
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Division of Biomedical Research > Immunotherapy Research Center > 1. Journal Articles
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