Article ID Journal Published Year Pages File Type
2052278 FEBS Letters 2005 5 Pages PDF
Abstract

Phytochromes, photoreceptors controlling important physiological processes in plants and many prokaryotes, are photochromic biliproteins. The red-absorbing Pr ground state is converted by light into the farred-absorbing Pfr which can be photoconverted back to Pr. In plants at least Pfr is the physiologically active signalling state. Here, we show that the N-terminal photochromic module of Cph1 homodimerises reversibly and independently in Pr and Pfr, Pfr-dimers being significantly more stable. Implications for the mechanism of signal transduction are discussed.

Related Topics
Life Sciences Agricultural and Biological Sciences Plant Science
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