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PLANT PHYSIOLOGY , Vol 111, Issue 2 577-588, Copyright © 1996 by American Society of Plant Biologists
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GENE REGULATION AND MOLECULAR GENETICS |
Expressed Sequence Tags of Chinese Cabbage Flower Bud cDNA
C. O. Lim, H. Y. Kim, M. G. Kim, S. I. Lee, W. S. Chung, S. H. Park, I. Hwang and M. J. Cho
Department of Biochemistry (C.O.L., M.G.K., S.I.L., W.S.C., S.H.P., M.J.C.), and Plant Molecular Biology and Biotechnology Research Center (C.O.L., H.Y.K., I.H., M.J.C.), Gyeongsang National University, Chinju, 660-701, Korea
We randomly selected and partially sequenced cDNA clones from a library of
Chinese cabbage (Brassica campestris L. ssp. pekinensis) flower bud cDNAs.
Out of 1216 expressed sequence tags (ESTs), 904 cDNA clones were unique or
nonredundant. Five hundred eighty-eight clones (48.4%) had sequence
homology to functionally defined genes at the peptide level. Only 5 clones
encoded known flower-specific proteins. Among the cDNAs with no similarity
to known protein sequences (628), 184 clones had significant similarity to
nucleotide sequences registered in the databases. Among these 184 clones,
142 exhibited similarities at the nucleotide level only with plant ESTs.
Also, sequence similarities were evident between these 142 ESTs and their
matching ESTs when compared using the deduced amino acid sequences.
Therefore, it is possible that the anonymous ESTs encode plant-specific
ubiquitous proteins. Our extensive EST analysis of genes expressed in
floral organs not only contributes to the understanding of the dynamics of
genome expression patterns in floral organs but also adds data to the
repertoire of all genomic genes.
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