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  • Title: A 69 bp fragment in the pyrroline-5-carboxylate reductase promoter of Arabidopsis thaliana activates minimal CaMV 35S promoter in a tissue-specific manner.
    Author: Hua X, van de Cotte B, Van Montagu M, Verbruggen N.
    Journal: FEBS Lett; 1999 Sep 17; 458(2):193-6. PubMed ID: 10481064.
    Abstract:
    The Arabidopsis thaliana gene that encodes pyrroline-5-carboxylate reductase (At-P5R), the last enzyme in proline biosynthesis in A. thaliana, is developmentally regulated and is highly expressed in cells that divide rapidly or undergo changes in osmotic potential. A 69 bp region (P69; -120 to -51) has previously been identified in a 5' deletion analysis of the At-P5R promoter to be necessary for the basal expression. Here, the essential role of P69 for tissue-specific expression of At-P5R is demonstrated by loss- and gain-of-function experiments.
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