Doing a senior seminar. Trying to find information on Chryptochrome, a plant photo pigment. More specifically trying to find its absorbance, function, structure, and any other miscellaneous information that might come in doing so.|||Light is a crucial environmental signal that controls many circadian responses in plants. Perception and transduction of light is achieved by at least two principal groups of photoreceptors, phytochromes and cryptochromes. Phytochromes are red/far-red light-absorbing receptors encoded by a gene family of five members (phyA to phyE) in Arabidopsis. Cryptochrome 1 (cry1), cryptochrome 2 (cry2) and phototropin are the blue/ultraviolet-A light receptors that have been characterized in Arabidopsis. Previous studies showed that modulation of many physiological responses in plants is achieved by genetic interactions between different photoreceptors; however, little is known about the nature of these interactions and their roles in the signal transduction pathway. Here we show the genetic interaction that occurs between the Arabidopsis photoreceptors phyB and cry2 in the control of flowering time, hypocotyl elongation and circadian period by the clock. PhyB interacts directly with cry2 as observed in co-immunoprecipitation experiments with transgenic Arabidopsis plants overexpressing cry2. Using fluorescent resonance energy transfer microscopy, we show that phyB and cry2 interact in nuclear speckles that are formed in a light-dependent fashion.
PMID: 11089975 [PubMed - indexed for MEDLINE]
Related Links
Hierarchical coupling of phytochromes and cryptochromes reconciles stability and light modulation of Arabidopsis development.[Development. 2001]
Resetting of the circadian clock by phytochromes and cryptochromes in Arabidopsis.[J Biol Rhythms. 2001]|||http://en.wikipedia.org/wiki/Cryptochrom鈥?/a>
in here you will see some links at the right, they have many detailed information about Cryptochrome, just click them, and see what you get
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