Seed-specific promoter from the rice glutelin GluB-4 gene...

Multicellular living organisms and unmodified parts thereof and – Method of introducing a polynucleotide molecule into or... – The polynucleotide contains a tissue – organ – or cell...

Reexamination Certificate

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C435S320100, C435S419000, C800S298000, C536S024100

Reexamination Certificate

active

07619135

ABSTRACT:
An objective of the present invention is to provide promoters having seed-specific promoter activity, and methods of expressing foreign proteins in seeds. In particular, a seed specific promoter from the rice glutelin GluB-4 gene is disclosed. The present inventors isolated the promoters of a number of genes that are expressed in rice seeds, constructed binary vectors in which each promoter is inserted upstream of the GUS reporter gene, and transformed rice using theAgrobacteriummethod. The inventors then used GUS expression level as an index to examine the site of expression, the expression pattern during seed maturation, and the level of expression in seeds for each promoter. They thus discovered promoters with activity specific to a particular site in seeds, and with higher activity than constitutive promoters and known seed-specific promoters.

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