tokens: In gel mobility shift assays , low binding activity of CBF to the wild-type AtpC promoter sequence was observed with nuclear extracts from tissue with low AtpC expression levels , i.e. extracts from etiolated and photobleached seedlings , whereas high binding activity was detectable with extracts from tissues with high AtpC expression levels , i.e. extracts from light-grown seedlings and etiolated seedlings treated with cytokinin .
folded_tokens: in gel mobility shift assay , low binding activity of cbf to the wild-type atpc promoter sequence be observe with nuclear extract from tissue with low atpc expression level , i.e. extract from etiolate and photobleach seedling , whereas high binding activity be detectable with extract from tissue with high atpc expression level , i.e. extract from light-grown seedling and etiolate seedling treat with cytokinin .