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CIRCADIAN CLOCK ASSOCIATED1 and LATE ELONGATED HYPOCOTYL Function Synergistically in the Circadian Clock of Arabidopsis
Two key proteins work together to control the daily biological clock in Arabidopsis plants
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Abstract
CCA1 and LHY are present in the same large complex in Arabidopsis, suggesting they function synergistically.
- CCA1 and LHY are Myb-related proteins involved in the circadian clock of Arabidopsis.
- Single mutants of cca1 and lhy exhibit short-period rhythms, while double mutants show an even shorter period.
- LHY and CCA1 bind to the same promoter region of the Light-harvesting chlorophyll a/b protein (Lhcb).
- Both proteins can form homodimers and heterodimerize, colocalizing in the nucleus.
- Their interaction occurs independently of photoperiod.
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