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Science 16 November 2001:
Vol. 294. no. 5546, p. 1413
DOI: 10.1126/science.294.5546.1413g
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The receptor for the plant hormone known as cytokinin is a histidine kinase. Sakai et al. (p. 1519) now demonstrate that a target for this receptor kinase is the response regulator ARR1, which contains DNA binding domains that can be put to good use in activating downstream target genes. The receptor and the response regulator together act as a two-component system that transduces hormone detection into transcriptional regulation.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)