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Using uidA (-glucuronidase; GUS) reporter gene constructs, the 5-untranslated region (UTR) of the Chlamydomonas chloroplast rbcL gene was screened by deletion and mutational analysis for the presence of a promoter element that previous studies implied to reside within the first 63base pairs of the UTR. Deleting a large segment of the rbcL 5UTR in a 35 direction to position +36, changing the remaining...